s Synco™ 700 Switching and monitoring device RMS705B incl. extension modules RMZ785, RMZ787und RMZ788 Basic documentation CE1P3124en 01.04.
Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.siemens.com/sbt © 2006-2010 Siemens Switzerland Ltd Subject to change 2 / 216 Siemens Building Technologies Switching and monitoring device RMS705B CE1P3124en 01.04.
Contents 1 Overview ..................................................................................................6 1.1 RMS705B – Features and functions .........................................................6 1.2 Product range............................................................................................8 1.3 Synco™ 700 topology...............................................................................9 1.4 Equipment combinations..............................................
6 Data acquisition.....................................................................................43 6.1 Trend .......................................................................................................43 6.2 Event logger ............................................................................................45 6.3 Operating hours ......................................................................................49 6.4 Meters .................................................
13 Communication ...................................................................................182 13.1 Enable communication..........................................................................182 13.2 "Communication" menu settings ...........................................................182 14 Support for errors and faults .............................................................191 14.1 Error/fault code list .........................................................................
RMS705B 1 Overview 1.1 RMS705B – Features and functions RMS705B helps switch and monitor plant elements in heating, ventilating and air conditioning plants. RMS705B is freely configurable (no standard applications). RMS705B typically is used for the following tasks: Non-standard applications of the SyncoTM 700 system Alarming and monitoring Switching functions (time switch, logical blocks, motors, etc.
Functions Data acquisition – Pulse meter (for display only, not for billing purposes). – Hours run counter. – Trend data display. – Event logging (e.g. for legionella function). Control and monitoring functions – Universal motor blocks. – Rotary step switch (with lead/lag control of pumps, fans, motors, refrigeration machines, etc.). – Logic function blocks. – 7-day time switches. – Comparison (comparison of analog input signals). – Calculators (default formulas, user-defined formulas).
1.2 Control units, accessories Product range The overview shows the units offering comprehensive solutions with RMS705B: Room unit Name Type Data sheet Switching/control unit Extension modules Switching and monitoring unit Universal module Universal module Universal module Module connector Operator unit, plug-in type Operator unit, detached Bus operator unit Service tool Central communication unit Web server RMS705B RMZ785 RMZ787 RMZ788 RMZ780 RMZ790 RMZ791 RMZ792 OCI700.
1.3 Synco™ 700 topology The following topology shows how the RMS705B is used: Internet Router Ethernet OZW772... RMZ791 RXB... RMZ790 RXB... RMZ792 RMU7... RMZ78... OCI700.1 Key RMS705B RMZ790 RMZ791 RMZ792 RMZ78... OCI700.1 OZW772… Switching and monitoring unit Operator unit, plug-in type Operator unit, detached Bus operator unit Extension modules Service tool Web server RXB… RMU7...
1.4 Equipment combinations The following table lists equipment that can be combined with the RMS705B and extension modules: Room unit Passive sensors Type All sensors with sensing element LG-Ni1000, Pt1000, T1 (PTC) Active sensors All sensors with - AC 24 V supply voltage - modulating output DC 0...10 V Monitoring devices QAF81..., QAF64..., QFA1000, QFA1001, QFM81…, QXA2000, QBM81... Passive signal sources BSG21.
1.5 Supplementary information Product documentation The following product documentation provides detailed information on safe and intended use and operation of Synco™ 700 products in building services plants in addition to the basic documentation. Type of document Product range description HVAC control with Synco Basic documentation RMS705B (this document) Basic documentation universal controller RMU7...
1.7 Overview Performance Summary of features and functions of the RMS705B: Features/Functions RMS705B Max. 4 connectable extension modules. Selection from: Extension with 1 universal module RMZ785 with 8 universal inputs. Extension with 2 universal modules RMZ787 with 4 universal inputs and 4 relay outputs each. Extension with 2 universal modules RMZ788 with 4 universal inputs, 2 analog outputs, and 2 relay outputs each. Universal inputs (RMS705B and extension modules) Max.
1.8 Important notes This symbol draws your attention to special safety notes and warnings. Failure to observe such notes may result in personal injury and/or considerable damage to property. Field of use Synco™ 700 products may only be used for control and supervision of heating, ventilation, air conditioning and chilled water plants. Intended use Proper transport, installation and commissioning as well as correct operation are prerequisite for flawless and safe operation of Synco™ 700 products.
2 Operation Synco™ 700 units may only be operated by staff instructed by Siemens Switzerland Ltd or its delegates and who understand the potential risks. 2.1 Operation without operator unit The following operating elements on the RMS705B and extension module can be used with the operator unit: Switching and monitoring unit Key Extension module 1 LED "RUN" device operating status display; with the following meanings: LED lit: Power on, no fault and periphery.
2.2 Operation with operator unit 2.2.1 Operator unit functions Use a plug-in or detached operator unit to operate the RMS705B (set and read). The operator unit does not save data: Entries are transferred from the operator unit to the RMS705B on site and processed accordingly. User information is displayed on the operator unit. 2.2.2 Operator elements All setting and readout values are presented as operating lines on the menu.
Display examples Below are a few typical displays and their explanation: Display Explanation Wednesday 06.01.2010 Welcome « Information 14:52 Start page Main menu Setting level Select setting parameters, e.g. on the main menu of the user level. Main menu Time switch 1... Inputs... Data acquisition... Aggregates... Entry 1 Start:25.02 ––.––.–– End: ––.––.–– Reason: Delete entry... ––.–– ––.–– Holidays Main menu> Controller 1 Current setpoint: 568 Time switch 1 Saturday 2.2.
2.2.4 Access level An access right is defined for each parameter (operating line). There are 3 access levels: Access level User level (for plant operators) Service level (for maintenance tasks) Password level (for commissioning) Access The user level is always accessible. Users can adjust visible, editable operating lines. Symbol Press the OK knob and the ESC button at the same time, then select operating line "Service level" and confirm by pressing the OK knob.
3 Commissioning Only qualified staff trained by Siemens Switzerland Ltd may prepare and commission Synco™ 700 products. 3.1 Start commissioning During commissioning, both control and plant safety functions remain deactivated! 3.1.1 Start at initial power-up RMS705B starts with menu "Language" (to commission or operate the plant) when the unit is first powered. – Select the language by turning the OK knob and confirm your selection. – Set and confirm time, date, and year using the OK knob.
3.2 Basic configuration Use the "Basic configuration" menu for the following settings: Select basic type (only basic type S is available). Assign extension modules to the controller position. Note Configuration Internal configurations are deleted if you decide to later reset RMS705B to basic type S. Main menu > Commissioning > Basic configuration > Operating line Basic type Position 1 Position 2 Position 3 Position 4 3.2.
3.2.2 Troubleshooting If the extension modules and their positions do not match the values entered in the basic configuration, or if an extension modules fails during operation, a fault is generated and handling is stopped. The outputs maintain the state prior to the fault. Fault messages No. 7101 7102 7103 7104 3.3 Name Fault extension module Effect Urgent message; must be acknowledged. Free configuration You can freely configure RMS705B within the possibilities of the available function blocks.
3.5 Exit commissioning If the application is valid, quit the Commissioning menu as follows: – Press the ESC button. The display shows a dialog box with the following information: Caution! Plant starts ESC – OK Press the OK knob to confirm. RMS705B boots using the settings, the plant is started, and the main menu is displayed. Main menu Commissioning... [Time swi 1] op sel... Time switch 1... Op selector 2... 3.
3.7 Exit password level Set the user level (access level for plant operator) when done with commissioning: – Press the OK knob and the ESC button at the same time. The "Access levels" menu is displayed. – Turn the knob to select the user level. – Press the OK knob to confirm your selection. 3.8 Device information Menu "Device information" allows you to view RMS705B information.
4 General settings 4.1 Time and date 4.1.1 Mode of operation Yearly clock The RMS705B has a yearly clock with time, weekday and date. Two selectable time formats The following time formats are available: 24 h: The date is displayed as dd.mm.yyyy (day.month.year). Example: 01.01.2010 The time is displayed as hh:mm (hours:minutes). Example: 15:56 am/pm: The date is displayed as mm/dd/yy (month/day/year). Example: 05/31/06 The time is displayed as hh:mm am/pm (hours:minutes am/pm).
Time monitoring Setting values Time monitoring (see Section 4.1.3) can be disabled. In this case, no fault message 5003 “Invalid time of day“ is triggered. Main menu > Time of day/date > Operating line Invalid time of day 4.1.2 Clock time operation Range Inactive/Active Communication Various sources are possible for time. However, you must enter this in the RMS705B. Both time of day and date can be exchanged via bus.
Note Only one clock time master per system allowed. A fault message is displayed (on the masters) if several devices are parameterized as master. Recommendation Always synchronize the system, i.e. use master-slave mode (1 master, all other devices are slaves). 4.1.
4.3 Select temperature unit You can select the temperature unit for RMS705B as °C/K or °F. Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Device > Operating line Unit 4.4 Range Degrees Celsius, Degrees Fahrenheit Factory setting Degrees Celsius Operator unit display contrast The display contrast can be adapted to the environment. Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Device > Operating line Contrast 4.
4.5.3 Configuration Electronic business card The text for the electronic business card is displayed as an Info picture. Use extended configuration to activate the electronic business card. Main menu > Commissioning > Extra configuration > Miscellaneous > Business card > Operating line Business card Settings Range Yes, No Factory setting Yes Main menu > Commissioning > Settings > ....
5 Inputs 5.1 Universal inputs Digital signals, passive analog or active analog signals can be connected to universal inputs. Device type inputs The device types have the following number of universal inputs: Switching and monitoring unit: RMS705B: 8 inputs Extension modules: RMZ785: 8 inputs RMZ787: 4 inputs RMZ788: 4 inputs Maximum version Max. 4 extension modules (selection from 1 RMZ785, 2 RMZ787, and 2 RMX788) can be connected. Max.
Main menu > Commissioning > Extra configuration > Input identifier > Configuration Comments Operating line N.X1 Adjustable values / Comment Activate the function by assigning the following to the input: Outside temperature, °C, %, g/kg, kJ/kg, W/m², m/s, bar, mbar, Pa, ppm, Universal 000.0, Universal 0000, digital, or pulse. ... RMZ788(2).X4 ditto ditto The outside temperature unit is always °C. Identifiers °C, %, g /kg, kJ /kg, W /m², m /s, bar, mbar, Pa, ppm, Universal 000.
5.1.3 Input terminal simulation Each input terminal can be simulated to test plant reaction. Setting values Main menu > Inputs > Simulation inputs > Operating line Range (type-dependent) ----, 50... 50 °C N.X1… A8 (2).X4 Factory setting (type-dependent) ---- Only authorized staff may override inputs within a limited period of time! During terminal simulation, fault message "Simulation inputs active" is triggered. Fault messages No.
5.2 Analog inputs See Section 5.1.1 for activating analog inputs. You can enter the following settings for analog inputs: Type, Measured range, Correction. 5.2.1 Type You can select "Type" if the unit is °C (identifier °C and outside temperature). The following types are available: Ni1000* 2xNi1000* T1 Pt1000 DC 0...10 V * Physically, the sensing element types LG-Ni1000, 2x LG-Ni1000 must be used (see Section 5.2.2). Setting values Main menu > Commissioning > Settings > ....
5.2.2 Measuring range The known measuring ranges for the passive sensing elements are preset: Passive temperature signals LG-Ni1000 2x LG-Ni1000 or T1 Pt1000 Preset measuring range 50… 250 °C 50...150 °C 50...+ 400 °C The measuring range must be entered as per manufacturer information or the required allocation for active signals. To do this, enter the lower (Value low) and upper (Value high) measured value. Setting values Main menu > Commissioning > Settings > ....
5.2.5 Example 1 Connection examples for sensors Temperature measurement with passive temperature sensor using LG-Ni 1000 sensing element. Main menu > Commissioning > Extra configuration > Input identifier > Input configuration Setting °C Operating line N.X1 Main menu > Commissioning > Settings > .... or Main menu > Settings > Inputs > ...X... Setting values Connection diagram G Setting Ni1000 3123A06 Operating line Type B... AC 24 V LG-Ni 1000 B G M M X...
Average temperature measurement with 4 passive sensors using LG-Ni1000 sensing element. Main menu > Commissioning > Extra configuration > Input identifier > Input configuration Operating line N.X1 Setting °C Main menu > Commissioning > Settings > .... or Main menu > Settings > Inputs > ...X... Setting values Operating line Type Connection diagram G Setting Ni1000 B... B... AC 24 V LG-Ni 1000 B G M B... LG-Ni 1000 B X... M B M LG-Ni 1000 B M M G0 N G0 B… B...
5.2.7 Multiple use of sensors Problem and solution Function "Multiple use of sensors" allows for wiring a passive signal at an input terminal directly to a Y-output and provide it as a DC 0…10 V signal. The signal can then be fed to other devices. Note Ally passive temperature signal types (LG-Ni1000, 2x LG-Ni1000, T1, Pt1000) can be converted and used multiple times. Configuration Main menu > Commissioning > Extra configuration > Sensor multiple use > Operating line Signal Y N.
5.3.2 Texts for logical states 0 and 1 A free text can be assigned to each digital input for logical states 0 and 1 (e.g. On/Off, full/empty, etc.). The text is displayed after it is assigned to the corresponding input. Main menu > Commissioning > Settings > .... or Main menu > Settings > Inputs > ...X... Setting values Operating line Text for: Logic 0 Text for: Logic 1 5.3.3 Range Max. 20 characters Max.
5.4 Pulse An input with this identifier can be used to connect a pulse counter. Pulses with the following specification can be received: Mechanical sources (Reed contact) without Namur circuitry, max. pulse frequency of 25 Hz and a min. 20 ms pulse duration. Electronic pulse source with max. pulse frequency of 100 Hz and min. 5 ms pulse duration. 5.4.
5.5 Remote setpoint adjuster, absolute The absolute remote setpoint acts on setpoints of the universal controller of the RMS705B. Setpoint sources BSG21.1 (0...1000 ) and BSG61 (0…10 V) are ideal for room unit QAA25 (5...35 °C). The absolute remote setpoint acts on both Comfort and Economy setpoints. 5.5.1 Activate function The function is activated by setting the identifier of an input as a remote setpoint. At the same time, specify the controller (1…3) the remote setpoint should act on.
5.5.3 Setpoints Function principle The remote setpoint always acts on the lower setpoint ("Heating"). The dead zone (distance Seq1 and Seq4) remains as is so that the upper setpoint ("Cooling") is shifted accordingly.
5.6 Outside temperature 5.6.1 Possible connections The outside temperature can be provided by different sources: Outside temperature connected locally to terminal. Outside temperature via bus. The following variants are available: Variant Effect Outside temperature at terminal. Communication outside temperature not active. RMS705B operates with own outside temperature. No effect on bus. Outside temperature at terminal. Communication outside temperature active.
5.6.3 Outside temperature via bus The outside temperature can only be provided via the bus if communication is active and an outside temperature set (outside temperature zone = "----" means that the outside temperature on the bus is inactive). To activate different outside temperatures to be sent via bus (e.g. outside temperature on the northern side of the building for the air conditioning plants, and outside temperature on the eastern side of the building for heating zone "East", etc.
5.6.5 Troubleshooting When you exit the "Commissioning" menu, a check is carried out to see if the outside temperature is connected. Message "[...X...] sensor error" is displayed if the outside temperature is connected at this point and missing later. For each system, only one outside temperature can be sent within the same zone (only one outside temperature master). Message ">1 outside temperature sensor" is displayed if several controllers send outside temperatures within the same zone.
6 Data acquisition 6.1 Trend 6.1.1 Connections and application Trend Purpose Use the Trend function block for time-related recording of measured values. It provides 4 independent trend channels. A trend channel can record one measured value. Two trend channels can be displayed for each Trend view: Primary channel and extra channel (as reference). It is possible to record signals from local inputs of RMS705B as well as room temperatures and outside temperature via bus. 6.1.
6.1.3 Settings Trend function settings Main menu > Settings > Data acquisition > Trend > Trend channel 1...4 > Operating line Trend channel 1… Trend channel 4 Trend signal Geographical zone (apartment) Geographical zone (room) Outside temperature zone Y-axis min Y-axis max Selection extra channel Adjustable values / Comment Channel name (editable text, max.20 characters). Trend signal assignment: ---, Room temp via bus, Outside temp via bus, N.X1 … RMZ788 (2).
Notes on the display The trend channels are displayed with their assigned text. The display immediately switches to the 24-hour view if a trend channel is selected. The press-and-turn button allows you to navigate between the different views. 6.1.4 Trend signal not available. Troubleshooting Trends no longer are recorded if a trend signal at the local inputs is no longer available (e.g. due to a faulty sensor).
There are two use cases: Use case 1: Monitor max. value The max. value is monitored and displayed in the event logger under "Maximum" if "Limit value on" > "Limit value off". Event logger 1 ON Sat 18.06.2005 00:00 Thu 30.06.2005 23:59 Maximum 40.0°C Limit value off Use case 2: Monitor min. value The min. value is monitored and displayed in the event logger under "Minimum" if "Limit value off" > "Limit value on". Limit value off Event logger 1 ON Sat 18.06.2005 00:00 Thu 30.06.2005 23:59 –12.
6.2.2 Setting values Event logger settings Main menu > Commissioning > Settings > .... or Main menu > Settings > Data acquisition > Event logger > Event logger 1...4 > Operating line Event logger 1…4 Range Max. 20 characters Limit value on Limit value off Event duration min** Event duration max** Event cycle min** Event cycle max** Fault priority Geographical zone (apartment) Geographical zone (room) Depending on selected type. Depending on selected type. 00.00..23.50 h.m 00.00..23.50 h.m 0...720 h 0..
6.2.4 Fault messages The following fault messages are generated during violation (above and below) if the corresponding times for "Event duration min/max" or "Event cycle min/max" are greater than 0. You must acknowledge these fault messages. Fault messages No.
The event is saved in the event logger only after processing "Limit value off". Data of the current event is lost if preceded by a power failure. Previously saved events remain available. Logging is canceled and terminated if the measured value signal at the terminal is no longer available. Logging is resumed after the signal is reactivated. The previous event cycle is not saved if yet another event cycle occurs within 5 minutes. 6.
6.3.1 Activate the operating hours counter Each counter is activated by assigning an input. Configuration Main menu > Commissioning > Extra configuration> Data acquisition > Operating hours > Operating line Input 1 Input 2 Input 3 Input 4 6.3.2 Range ---, N.X1, N.X2, ... ---, N.X1, N.X2, ... ---, N.X1, N.X2, ... ---, N.X1, N.X2, ... Factory setting --------- Assign texts A specific text can be assigned to each counter. This text is displayed as menu and operating line text on the operating pages.
6.3.4 Maintenance message A maintenance message can be assigned to each operating hours counter, e.g.: "Service Fan SA". Both "Text for: Service required" and "Service interval" are freely selectable. "Service interval" specifies the number of operating hours until the next service. No maintenance message is sent if "Service interval" is set to 0 h. The fault priority is set to "Not urgent".
6.4 Purpose Meters Meters are used to acquire consumption values. Four independent meters are available. Pulses from gas, hot water, cold water and electricity meters are processed.
6.4.3 Pulse valency Every pulse from a pulse source corresponds to a specific consumption value. Pulse valency is printed on the consumption meter. Enter pulse valency using numerators and denominators. Example 1 Pulse valency Setting 20 liters / pulse. Pulse valency numerator = 20 Pulse valency denominator = 1 Pulse unit = Liter Example 2 Pulse valency Setting 3.33.. Wh / pulse.
6.4.6 Display meter readings The current meter reading, the date and the reading of the last 15 months are displayed. Display values Main menu > Data acquisition > Meter 1...4 > Operating line Meter reading current Unit [Readout 1] date [Readout 1] meter reading Comment 0…999'999’999 As per the configured display format. … [Readout 15] date [Readout 15] meter reading Notes The listed operating lines also exist for meters 2 to 4. The monthly values are stored at midnight at the end of the month.
6.5 Calculator C Calculator 1 ƒ= (A-B)*C /........ Purpose The calculator allows for converting input values to output values applying your own formulas. This allows for sophisticated calculations. Two independent calculator blocks are available. Application examples Switch on or off aggregates via current heating or cooling output. Temperature difference calculation (several input signals possible).
6.5.1 Activate the calculator Assign input A to activate the calculator. Main menu > Commissioning > Extra configuration > Data acquisition > Calculator 1…2 > Configuration Operating line Input A Input B Input C Range ---, N.X1, N.X2, ... ---, N.X1, N.X2, ... ---, N.X1, N.X2, ... -50.0... +999.0 –50... +9999 Max. 20 characters ---, N.Y1, N.Y2, … Constant u, v, w Constant x, y, z Formula Modulating output Max. 20 characters. Max. 2 parentheses in sequence, e.g.
Considerations Medium density and specific medium heat capacity are constants: Density (water): 1000 kg/m³ is mapped to constant x (integer). Heat capacity (water): 4.2 kJ/ (kg*K) is mapped to constant u (floating point). Formula definition Output is calculated based on the following formula for the RMS705B calculator: Output = Input C * x * u * (input A – input B). Enter the following in the "Formula" operating line: C*x*u*(A-B) Constants Enter 1000 in operating line "Constant x". Enter 4.
6.5.2 Limits for output and user-defined unit The calculated output signal of the modulating output (Y) can be limited high and low. In addition, you can assign a user-defined unit. The output result's unit (K, kW, etc.) is entered as characters and displayed together with the output value. Setting Main menu > Commissioning > Settings > … or Main menu > Settings > Data acquisition > Calculator > Calculator 1…2 > Operating line Unit Value low Value high Range Max.
6.5.4 Display values and wiring test The following values are displayed on the operator unit: Display values Main menu > Data acquisition > Calculator 1…2 > Operating line Actual value Unit Input A Input B Input C Note Comment –50... +9999 or –50.0... +999.9 Max. 20 characters Consider possible number ranges of the result when writing a formula. Change to another unit (e.g. kJ rather than J) if you can expect the result to be large.
7 7-day time switch 7.1 Time switch Purpose On / Off Six 7-day time switches with 6 switch-on or switch-off times are available for each day. Features Each time switch has operating line setting "Holiday priority". If set to "Yes", the following occurs: The time switch is set to "Off" for the defined holidays. Defined special days are activated. The "Holiday priority" setting is ignored if the time switch is set to "Slave".
The settings have the following effect: Slave Diagram The time switch in RMS705B is not active. The acting time switch is that one acting on the geographical zone set on this controller as the time switch receiving zone (time switch slave (apartment)). The external time switch must be set as the time switch master. 3123Z08 Entry Effect Autonomous The time switch only acts locally on the RMS705B.
Copy 7-day programs You can copy a 7-day program containing all entries to another time switch. To do this, select the desired time switch (e.g. Time switch 3). Turn the press-and-turn button to the right. "Copy to" is displayed at the end of the 7-day list. You can copy the selection to either all or to one single time switch. Note The data is copied if the target time switch is activated. 7.1.3 Assign texts You can assign text to each time switch and operation selector.
7.1.5 Troubleshooting Fault message "[Time switch 2] failure" is displayed if a time switch signal from the bus is anticipated and not sent. In this case, the recipient continues to operate on "On". Fault messages No. 5101 5111 5121 5131 5141 5151 7.
The individual settings have the following effect: Entry Autonomous Effect Diagram Slave The holidays/special day program in this RMS705B is not active. The external holidays/special day program with the same holidays / special day zone is active. The external holidays/special day program must be set as the master holiday/special day program. Master The holidays/special day program in this RMS705B is active.
7.2.4 Calendar entry Max 16 entries are possible. The entries are sorted in chronological order. The following is required for each entry: Date, year and start time. Date and end time. Reason for entry (holidays or special day). Setting values Main menu > Holidays/special days > Operating line Entry 1...16 Range Start, End, Reason Factory setting Note You can enter annually recurring holidays or special days by entering an asterisk "*" for the annual setting.
Special day The digital input enables the plant to be constantly switched to the special day program in the 7-day program without intervention on the controller. The special day program becomes active if a permanent signal is applied to the configured input. This program is maintained until there is no more signal. Only then does the normal 7-day program resume operation. Holidays The digital input enables the plant to be constantly switched to "Holidays" without intervention on RMS705B.
8 Aggregates 8.1 Logic Logic 1 C Purpose Use the logic block for logical links to multiple input signals. 10 independent logic function blocks are available. Operation selector can be activated for each logic block, allowing users to One operation selector manipulate the program from the highest main menu level. Auto, Off or On can be selected. Manipulation acts on the output of the logic function block.
Logic tables Input1 0 0 1 1 AND Input2 0 1 0 1 Output 0 0 0 1 Input1 0 0 1 1 NAND Input2 0 1 0 1 Output 1 1 1 0 Input1 0 0 1 1 OR Input2 0 1 0 1 Output 0 1 1 1 Input1 0 0 1 1 NOR Input2 0 1 0 1 Output 1 0 0 0 Input1 0 0 1 1 EXOR Input2 0 1 0 1 Output 0 1 1 0 Input1 0 0 1 1 EXNOR Input2 0 1 0 1 Output 1 0 0 1 68 / 216 Siemens Building Technologies Switching and monitoring device RMS705B Aggregates CE1P3124en 01.04.
8.1.1 Activate the logic Activate the logic by configuring at least 1 input or the operation selector. Use menu "Extra configuration" to configure logic functions for Logic A, B, and C. The "Operation selector" setting in the operating line selects if the operation selector is to be displayed in the main menu at the user level. Note Configuration The operation selector allows users manual manipulations. No warning is displayed during manual manipulations.
8.1.3 Setting values switching value On and Off The logic can process digital and analog signals. Setting values "[Logic x switching value n] on" and "[Logic x switching value n] off" are used to convert a continuous signal to a 2-position signal (On/Off). Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Logic functions Logic 1...
8.1.6 Minimum off time The minimum switch-off time prevents aggregates from cycling too frequently. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Logic functions Logic 1...10 > Setting values Operating line Off time minimum Range 00.00...59.59 m.s or* 00.00...23.50 h.m Factory setting 00.00 m.s * See Notes on the time format in Section 8.1.1 The minimum switch-off time always takes effect after a switch-off command. 8.1.
8.1.10 Notes There is no hysteresis if with an analog input of the logic block the switching value is set to On = switching value Off. The "Off" state is issued for the entire logic block if an error occurs at a configured input. Logic C is ignored and the signal of Logic A is sent directly to the output if only inputs are configured with Logic A. Logic C is ignored and the signal of Logic B is sent directly to the output if only inputs are configured with Logic B.
8.1.12 Application example for RS flip-flop The following application example shows a solution for an RS flip-flop: N.X1 N.X2 Set NOR NOR Logic 1 N.Q1 C Logic 2 C N.
8.2 Comparator 1 Purpose Function principle Comparator Comparator 2 The comparator helps compare two analog input signals. Two comparators are available: If differential value (A - B) between input A and B: Is greater than "Limit value on", the comparator turns on. – Is smaller than "Limit value off", the comparator turns off. – Note A should (normally) be greater than B, as the difference (A – B) is evaluated with preceding sign, and the limit values cannot be set negative. On A-B Min.
8.2.2 Assign texts You can assign a text to each comparator. The text is displayed on the menu and in the operating line. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Logic functions > Comparator 1...2 > Setting values Operating line Comparator 1…2 Range Max. 20 characters Factory setting Comparator 1…2 See Section 16.4 "Editable texts RMS705B" for an overview of all editable texts and on how to reset them. 8.2.
8.2.5 Minimum on time For the comparator output, a minimum on-time can be set, i.e., when a switch-on command is issued, the output remains active at least for the set min. switch-on time. Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Logic functions > Comparator 1...2 > Operating line On time minimum Range 00.00...59.59 m.s or* 00.00...23.50 h.m Factory setting 00.00 m.s * See Notes on the time format in Section 8.2.
8.2.9 Priorities For comparator operations, the following priorities apply: 1. 2. 3. 4. 5. 6. On/Off during wiring test. Off by "Off time minimum". On by "On time minimum". Off by "Switch-on delay". On by "Switch-off delay". Comparison of inputs Switching value A and B. 8.2.10 Troubleshooting The output for the comparator is set to "Off" when the input values are compared to various units or when there is a sensor error on the input.
8.3 Purpose Rotary step switch Use this function to control multi-stage aggregates depending on load or control several aggregates and be used as lead/lag control. You can configure the rotary step switch using a selectable step switch type (3 types available for selection). The rotary step switch can be configured as: Linear step switch - Switch equal stages or aggregates with equal output (max.4 per function block).
8.3.1 Activate block Activate the rotary step switch by assigning command or load to output A. Do this via the motor block to be connected, the logic block or the continuous output, i.e. from their configuration menus. See the following example: Example Configuration Command of output A is to act on Logic block 1. Main menu > Commissioning > Extra configuration > Aggregates > Logic functions > Logic 1...
8.3.2 Load connection Linear step switch The linear step switch switches the load outputs in equal steps. The following overview shows configurations for using the linear rotary step switch.
Application examples Modulating load input with switching command outputs (Example 1) Number of stages or aggregates Load input, start condition A+B+C+D Output configuration A B C Run priority changeover D 1 4 Start a d d d d Yes Description: - Control of refrigeration machine with 4 compressors to outlet temperature. - Run priority changeover includes changeover incase of fault.
Start conditions with switching command outputs (Example 2.1) Output configuration A B Load input, start condition Number of stages or aggregates C Run priority changeover D 1 4 Start A+B+C x d d d Yes Description: - 3 pumps controlled by one variable speed drive each. - Control is on constant network pressure, the pumps are switched on in sequence depending on demand. - All switched on pumps run at the same speed (parallel operation, common DC 0…10 V output).
Start conditions with switching command outputs (Example 2.2) Number of stages or aggregates Load input, start condition Output configuration A B C Run priority changeover D 1 4 Start A+B+C+D x d d d d Yes Description: - 4 evaporator pumps available for 3 single-stage refrigeration machines. - Max. 3 pumps are operating at the same time (1 standby). - An evaporator pump is switched on each time a refrigeration machine is released.
Modulating load input with modulating load outputs (Example 3) Output configuration A B Load input, start condition Number of stages or aggregates C D 1 4 Start A+B a a a Run priority changeover Yes Description: Control of 2 sequentially switched control valves of the same size and type. Function diagram 3123D29 Plant diagram 1 B 2 A 0% XP 100 % Q 3123S51 DI AI DO AO B A Q 0% XP 100 % Configuration diagram Rotary step switch 1 X Modul. output D D Modul.
Modulating load input with switching command outputs and modulating load outputs Number of stages or aggregates (Example 4) A+B+C Load input, start condition Output configuration A B C Run priority changeover D 1 4 Start a d a d a d a Yes Description: - 3 refrigeration machines with internal, modulating, inlet temperature-dependent output control. - RMS705B controls to a constant temperature difference at a pressureless header to ensure the direction of flow from cold to hot.
Modulating load input with combinations of modulating and switching outputs Number of stages or aggregates (Example 5) A+B+C Output configuration A B Load input, start condition C Run priority changeover D 1 4 Start a a d d nein Description: Level control with 2 on/off shutoff valves and 1 control valve. Plant diagram 3 0..
Modulating load input with combinations of modulating and switching outputs Number of stages or aggregates (Example 6) A+B+C Output configuration A B Load input, start condition C Run priority changeover D 1 4 Start a d a d d nein Description: Supply air temperature control with electric air heater batteries. Plant diagram 1 Function diagram 1 kW 2 1 kW 3 T 3123D32 0..
Run priority changeover with the linear step switch Only the linear step switch offers run priority changeover, i.e. when the load outputs have equal-size steps. In addition, the combination of commands and load must be the same for outputs A…D. Run priority changeover may occur via: Sequence selector on the operator unit. Periodic changeover (weekly). Changeover by operating hours. First in first out. Several changeover types can be activated at the same time.
Periodic changeover Periodic changeover set to "Auto" means that weekly periodic changeover of the lead aggregate can be activated. Periodic changeover balances out the number of operating hours between the individual aggregates. Main menu > Commissioning > Settings > ....
The corresponding aggregate is switched off in case of fault, and the next available aggregate is switched on. See Section 8.3.12 for the associated configuration. Fault 8.3.3 Flexible step switch With the flexible step switch, load outputs are switched on that are capable of covering the current output demand as per their rated output. In contrast to the linear rotary step switch, different rated outputs can be handled per aggregate.
Application examples Modulating load input with switching command outputs (Example 1) Number of stages or aggregates Load input, start condition Output configuration A B C Run priority changeover D 1 4 Start A+B+C+D a d d d d No Description: - Several recirdulated air heaters with different capacities are controlled to room temperature.
Start condition with switching command and modulating load output Number of stages or aggregates (Example 2) A Load input, start condition Output configuration A B C D 1 4 Start x d Run priority changeover a No Description: - Step-wise control of a modulating aggregate (pump, digital/analog conversion). - 3 refrigeration machines (1-stage) use a common twin evaporator pump (with integrated variable speed drive) for changeover operation (2 x 100%) with internal run priority changeover.
Modulating load input with switching command and modulating load outputs Number of stages or aggregates Load input, start condition (Example 3) A+B a Output configuration A B C Run priority changeover D 1 4 Start d a d a No Description: - 2 refrigeration machines with different capacities have an internal output control (e.g. hot gas bypass) controlled in sequence to a common flow temperature. - Typical capacity profile: Aggregate A (min. output = 0.
Load assignment (flexible step switch only) With the flexible step switch, assign the load to the aggregates so that as few aggregates as possible are operating and optimum control is achieved under partial load conditions. To this end, the output values of each connected aggregate must be set in the rotary step switch. The mini. output (0% of the load signal) and output (100% of the load signal) must be set if the load output configuration is ( ).
8.3.4 Binary step switch Use the binary step switch to switch multistage aggregates. Size the aggregates according to the binary load distribution. Notes With the binary step switch, run priority changeover is not possible. Connect a modulating load signal to the output at aggregate A ( A). Load assignment In the binary step switch, digital outputs and number of load steps are assigned as per the tables below to the entire switching capacity of the aggregate.
With 2 digital outputs With 2 digital outputs and 1 modulating output + 1 +2 a a a 3123D35 Example a 0 +2 + a a a C B B A A Q 0% 0% 100 % XP Q 100 % XP The following overview shows configurations for using the binary rotary step switch.
Application examples Modulating load input with switching command outputs (Example 1) Load input, start condition Number of stages or aggregates Output configuration A B C Run priority changeover D 1 4 Start A+B+C+D a d d d d No Description: Supply air temperature control with direct evaporator (4 different-sized compressors).
Modulating load input with combinations of modulating and switching outputs Number of stages or aggregates (Example 2) A+B+C Load input, start condition Output configuration A B C D 1 4 Start a a d Run priority changeover d No Description: Supply air temperature control with binary stepped electric air heater batteries.
8.3.5 Command ( ) An aggregate is controlled via command output A…D ( ). Normally, the command output sends the signal via the motor block to output terminal Q(x). Example Rotary step switch 1 C D C X N.Q1 D N.Q2 You can set for all steps a common "Runup delay", "Locking time", and "Restart time" for the command output. Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Rotary step switch > Rotary step switch 1...
Function diagram Start condition 1 Start condition 2 1 0 1 0 1 Command A 0 1 Command B 0 locking time 8.3.6 locking time Load ( ) The load signal ( ) 0...100 % allows for controlling a modulating aggregate. The signal is sent to the terminals Y(x) via a modulating output block. Example Rotary step switch 1 C D C X Modul. output Modul. output A N.Y1 8.3.7 D B N.Y2 Precommand output ( ) Use a precommand output to first start an aggregate (e.g.
8.3.8 Precommand input ( ) "Precommand input" helps to enable the first precommand output (of the step switch) of the rotary step switch. For example, the evaporator pump of the first refrigeration machine can be switched to enable the flow sensor to acquire the correct flow temperature. The precommand output of the aggregate switches on at current priority if run priority changeover (linear rotary step switch) is enabled.
Example for precommand output and input Plant diagram: Sequence with precommand input and output. T 2 1 2 1 3123S66 2 1 DI AI DO AO Configuration diagram: The precommand input e.g. is switched via signal "Plant on" (via Logic 1). Rotary step switch 1 Logic 1 C X C C D D 102 / 216 Siemens Building Technologies Switching and monitoring device RMS705B Aggregates CE1P3124en 01.04.
8.3.9 Inputs for load-dependent switching The rotary step switch provides various options to define load. You can use load input , start conditions 1…4, or a combination of both. The result, which acts on the rotary step switch as a signal, depends on the type of rotary step switch. Load input X -- Types Start condition 1..4 -Linear Flexible Binary X Linear X X Linear X X -- X Flexible Binary Flexible Binary 8.3.
8.3.11 Start condition 1, 2, 3, 4 The start condition inputs are required to: Define the load from several signals to start several aggregates. Generate an analog load signal from several signals. Note Configuration The start conditions are not evaluated until the precommand input is On if a precommand input is configured and the precommand input state is Off.
Configuration Main menu > Commissioning > Extra configuration > Aggregates > Rotary step switch > Rotary step switch 1…2 > Operating line Fault status message A Fault status message B Fault status message C Fault status message D Adjustable values / Comment ---, X1, X2, ... ---, X1, X2, ... ---, X1, X2, ... ---, X1, X2, ... The aggregate's priority is assigned without delay as per the run priority plan if a fault message is removed after troubleshooting the aggregate.
8.4 Purpose Motor The motor block controls and monitors all motor functions. Six independent motor blocks are available. There are 3 different types: 1-speed motor (pump, fan) 2-speed motor (fan) Twin motor (twin motor, twin pump) Inputs Outputs Explanation of symbols Input V Section Precommand checkback signal Flow signal Output 8.4.9 8.4.6 Precommand A B Motor A, Motor B output Section 8.4.8 8.4.1 Motor A-, Motor B-Overload signal 8.4.7 Motor operating state 8.4.
8.4.1 Enabling and motor block type Enable the motor block by assigning the corresponding outputs and determining the type for motor B. Valid configurations: Motor Configuration point Setting 1-speed motor Motor A Motor B Motor B type Motor A Motor B Motor B type Motor A Motor B Motor B type Qx --(not relevant) Qx Qx 2-speed Qx Qx Twin motor 2-speed motor Twin motor A free relay can be assigned to the output. For transparency, we recommend to arrange the relays side by side.
On Off TiOnMin1 0 TiOffMin TiRup TiOnMin1 TiRup 0 0 Key = TiRup DlyOn = DlyOff = TiOnMin1 = TiOffMin = Runup time Switch-on delay Switch-off delay On time minimum, speed 1 Off time minimum You can set a run-up time for the 1-speed motor. The motor operating state is indicated after the run-up time expires. Settings Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Operating line Runup time 8.4.3 Range 00.00...59.59 m.s Factory setting 00.
Example 2-speed fan control by motor block. N.X1 DI X DO N.Q1 Runup time / Rundown time Settings N.Q2 You can set a "Runup time" and "Rundown time" for the 2-speed motor. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Operating line Runup time Rundown time Range 00.00... 59.59 m.s 00.00... 59.59 m.s Factory setting 00.10 m.s 00.10 m.
Control sequence Run-up and switch-off of the 2-speed motor. "Switch-on delay", "Switch-off delay", min. switch-on time and min. switch-off time are considered. Function diagram Speed 2 Speed 1 Off TiOnMin1 TiOnMin1 TiOffMin TiOnMin1 0 TiRup TiOnMin2 TiRup TiCst 0 0 Key TiRup = TiCst = DlyOn = DlyOff = TiOnMin1 TiOnMin2 TiOffMin Locking 2nd speed by outside temperature You can lock the second speed if the temperature drops below an adjustable outside temperature value.
Example Control of a twin pump by the motor block. X Changeover period Setting values You can enter a changeover period for orderly changeover of run priority. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Operating line Changeover period Range 60...60 s Factory setting 0s If a negative number is entered, both motors are switched on for the period of time set during changeover.
Control sequence Run up and switch off the twin motor: Switch-on delay, switch-off delay, min. switch-on time and min. switch-off time are considered. On Function diagram Off TiOnMin1 TiRup TiOffMin TiOnMin1 TiRup Key TiRup = DlyOn = DlyOff = TiOnMin1 TiOffMin Runup time Switch-on delay Switch-off delay = On time minimum, Step 1 = Off time minimum Behavior in case of fault If a motor is faulty, the run priority is changed over to the other motor.
Run priority changeover Setting value Run priority changeover can be automatic, manual, or in the case of fault. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Operating line Run priority Changeover by time Range Motor A Motor B Automatic Factory setting Automatic If the selection in operating line "Run priority" is "Automatic", the run priority automatically changes weekly. Changeover occurs at the time set for motor kick.
8.4.6 Flow signal V Flow supervision can be provided by a flow switch or flow sensor. Configuration Main menu > Commissioning > Extra configuration > Aggregates > Motor > Motor 1...6 > Operating line Adjustable values / Comment Flow signal ---, N.X1, N.X2,... (digital and analog* inputs). *) With analog inputs, only inputs with units m/s, bar, mbar, Pa, Universal 000.0, Universal 0000 are possible.
If a flow fault occurs with twin motors, automatic changeover to the motor output occurs. A fault message is displayed. If both pumps are faulty, a fault message is displayed as per Section 8.4.4. Fault messages Twin motor No.
A fault message is displayed and output "Motor fault" is enabled if there is an overload fault. You can change the following texts ex-works texts in the RMS705B at the password level. Overload messages 1 or 2-speed motor Overload messages twin motor No. 1311 1321 1331 1341 1351 1361 Text [Motor 1] overload [Motor 2] overload [Motor 3] overload [Motor 4] overload [Motor 5] overload [Motor 6] overload Effect with factory setting Urgent message; must be acknowledged. Urgent message; must be acknowledged.
Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Setting values Operating line Precommand runup time Precommand rundown time Function diagram Range 00.00…59.59 m.s 00.00…59.59 m.s Factory setting 00.00 m.s 00.00 m.
8.4.9 Precommand checkback signal You can configure a "Precommand checkback signal" for each motor block in addition to the precommand. The "Precommand checkback signal" provides information on if the precommand was implemented (e.g. via valve or damper end position switch). Only then is the motor switched on. Configuration Main menu > Commissioning > Extra configuration > Aggregates > Motor > Motor 1...6 > Operating line Precommand checkback signal Range ---, N.X1, N.X2,... (digital inputs only).
You can change the following texts ex-works texts in the RMS705B at the password level. Fault messages No. 1318 Text [Mot 1] precom no checkb signal 1328 [Mot 2] precom no checkb signal 1338 [Mot 3] precom no checkb signal 1348 [Mot 4] precom no checkb signal 1358 [Mot 5] precom no checkb signal 1368 [Mot 6] precom no checkb signal 8.4.10 Effect Urgent message; must be acknowledged and reset. Urgent message; must be acknowledged and reset. Urgent message; must be acknowledged and reset.
8.4.11 Motor fault Output motor fault is "On" in the case of a fault when the motor no longer is able to transport the medium. It is used to forward the fault information to another aggregate.
Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Motor > Motor 1...6 > Operating line Speed start condition 1 Speed start condition 2 Example Range Speed 1, Speed 2 Speed 1, Speed 2 Factory setting Speed 1 Speed 1 Control switch on a panel acting directly on the motors (one separate control switch per motor). Preselection of the speed start condition allows for defining the input value. An analog signal can be used as start or stop signal.
8.4.14 Motor kick To prevent the motors (pumps) from seizing during longer off periods (e.g. heating group in summer), a periodic motor kick can be enabled for each motor block. When motor kick is active, the motors are switched on for 30 seconds once a week regardless of any other functions and settings. The motor kick is enabled by setting "Motor kick" to "Yes". If the setting is "No", there is no motor kick. In addition, a "Kick day" and "Kick time" can be set.
8.4.16 Wiring test During the wiring test, the motors can be directly switched via the control switch. Wiring test Main menu > Commissioning > Wiring test > Outputs > Operating line Motor 1… Motor 6 [Motor 1] A… [Motor 6] A [Motor 1] B… [Motor 6] B Note Comment Off, Speed 1, Speed 2 (2-speed motor on display). Off, On (1-speed motor, twin motor on display). Off, On (twin motor on display). Adjustable times acting directly on the relay are effective (run-up time, coasting time). 8.4.
8.4.19 Priorities The following priorities apply to motor operations: 1. On/Off during wiring test. 2. Off by motor supervision ("Flow signal", "Overload signal"). 3. Motor times ("Switch-on delay", "Switch-off delay", min. switch-on time, min. switch-off time). 4. Locking speed 2 (dependent on outside temperature). 5. On by outside temperature. 6. On by "Motor kick" (no motor times available). 7. Off by "Stop condition 1" and 2. 8. On by "Start condition 1". 9. On by "Start condition 2".
8.5.2 Limitations The modulating output (Y) can be limited at the top and bottom. Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Modulating outputs > Modulating output A...H > Setting values Operating line Positioning signal min Positioning signal max Range 0...100 % 0...100 % Factory setting 0% 100 % Output 0...100 % then corresponds to "Positioning signal min" (Ymin) to "Positioning signal max" (Ymax).
8.5.4 Assign input Main menu > Commissioning > Extra configuration > Aggregates > Modulating outputs > Modulating output A...H > Configuration Operating line Input 1… Input 3 8.5.5 Adjustable values / Comment ---, N.X1, sequence controller x.Rot’step’swi y (analog values only). Start condition Enable the modulating output via a digital signal. The output signal is issued by considering any limitations. 0 V is issued at the output, or 10 V for inversion, if the start signal is withdrawn.
Purpose 9 Signal converter 9.1 Min-max-average "Min-Max-Average" executes the following calculations from the signals from inputs 1 to 5: Selection of minimum input signal (Min). Selection of maximum input signal (Max). Calculation of average value (Avr). 2 "Min-Max-Average" blocks are available: The calculated values are provided as DC 0…10 V signals (Y) and internal, analog signals (a). Note The calculations do not consider non-configured inputs. 9.1.
9.1.2 Modulating output settings You can set the value range mapping the DC 0…10 V signal (Y) at block "Min-MaxAverage". To do this, set the lower (0 V) and upper (10 V) value. RMS705B linear calculates interim values accordingly (see diagram below). Note The value range setting mapped to the DC 0…10 V signal (Y) does not impact the internal, analog output signal (a). Main menu > Commissioning > Settings > ....
Example A-Average-, B-Max calculation Split function "Inputs split" is enabled. N.X1 N.X2 °C °C N.X3 N.X4 % % X X X N.Y1 3124S19en A Function range A: "Min-Max-Average" block calculates the average from terminal values N.X1, N.X2 (both in °C). The result is used as internal, analog signal (a) from controller 1 as main control variable. Function range B: "Min-Max-Average" block calculates the maximum from terminal values N.X3, N.X4 (both in %).
9.1.4 Assign texts You can assign a text to each "Min-Max-Average" block. Main menu > Commissioning > Settings > .... or Main menu > Settings > Signal converter > Min-Max-Average 1…2 > Setting values Operating line Min-Max-Average 1.. 2 Range Max. 20 characters Factory setting Min-Max-Average 1…2 See Section 16.4 "Editable texts RMS705B" for an overview of all editable texts and on how to reset them. 9.1.
9.2 Enthalpy calculator Purpose The function block calculates the following based on inputs temperature and relative humidity: Function range A Function range A (inputs Temp A and RelHu A): Enthalpy A Absolute humidity A Dew point temperature Wet bulb temperature Function range B Function range B (inputs Temp B and Rel Hu B): Enthalpy B Absolute humidity B Enthalpy difference (Enthalpy A Minus Enthalpy B) The results of the calculations are provided as DC 0...
9.2.1 Enable enthalpy calculator Assign an input to enable this function. Both temperature and relative humidity must be available and at least one output must be interconnected to enable calculation.
9.2.3 Assign texts You can assign a text to the enthalpy calculator block. Main menu > Commissioning > Settings > .... or Main menu > Settings > Signal converter > Enthalpy calculator > Setting values Operating line Enthalpy calculator Range Max. 20 characters Factory setting See Section 16.4 "Editable texts RMS705B" for an overview of all editable texts and on how to reset them. 9.2.4 Function check / wiring test The inputs and outputs of the enthalpy calculator are displayed on the operator unit.
9.3 Signal doubler/inverter a S p lit-In v Purpose A B Y a Y a The function block provides the following functions: Limit the upper and lower input signal value, for output signal "Modulating output A" or "Modulating output B" respectively. Invert output signals "Modulating output A" or "Modulating output B". Convert the signal of a passive input signal to two active signals. Double the signal. The output signals are provided in the range DC 0…10 V or as an internal, analog signal (a). 9.
Example for signal doubling Signal doubling with sequential control of the outputs, i.e. after output A is controlled, output B is controlled. Function diagrams Input signal A limitation: Output A corresponds to: "Positioning signal min A" (YminA) to "Positioning signal max A" (YmaxA). 10 V max A A ut utp go n i lat du Mo min A 0% 0V Value low A Input signal B limitation Output B corresponds to: "Positioning signal min B" (YminB) to "Positioning signal max B" (YmaxB).
9.3.3 Assign texts You can assign a specific text to each "Signal doubler-inverter". This text is displayed as menu and operating line text on the operating pages. Main menu > Commissioning > Settings > .... or Main menu > Settings > Signal converter > Signal doubler-inverter > Setting values Operating line Signal doubler-inverter Range Max. 20 characters Factory setting Signal doubler-inverter See Section 16.4 "Editable texts RMS705B" for an overview of all editable texts and on how to reset them.
Purpose 10 H/C demand, H/C changeover 10.1 Heat demand function 10.1.1 Purpose and enabling The "Heat demand" function acquires heat demand from a heat distribution zone via the bus. The collected heat requests can be routed to another zone or further handled as a resulting setpoint condition (temperature request signal, heating flow setpoint) as a continuous or digital signal. Contrl.
10.1.3 Purpose Use universal controller as primary controller Enter an extra configuration to use a universal controller as primary controller (see Section 10.3 for application examples). Contrl.
Main menu > Commissioning > Communication > Distribution zones > Setting values Operating line Heat distribution zone Range 1…31 Factory setting 1 Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Heat demand > Operating line Limit value request on Limit value request off Heating flow setpoint Flow temperature reduction max Control action Request evaluation Limit value request on Range 0...100 % 0...100 % 0...140 °C 0...
Control action The "Control action" of the flow temperature on the setpoint shifts can be set in three steps ("Fast", "Medium", "Slow") to adapt to the plant. Request evaluation Use setting "Request evaluation" to determine if the max value or the average of the requests is to be used. When using the "Maximum" setting, the flow temperature is readjusted so that the valve position for the consumer with the greatest heat demand is 90%.
10.1.7 Purpose In addition to the heat demand relay, heat demand can be provided at a continuous output of other devices. You can set the characteristic of the continuous 0….10 V signal. Main menu > Commissioning > Extra configuration > Aggregates > Heat demand > Configuration Operating line Adjustable values / Comment Heat demand modulating ---, N.Y1, N.Y2, ... / Enable output.
10.1.8 Display values Heat and refrigeration demand are visible on the password level under: Main menu > Aggregates > Heat and refrig demand > Operating line Heat demand air handling Heat demand air retreatment Heat demand heating surface Heat demand Heat demand relay Heat demand modulating Range 0...100 % 0...100 % 0...
Purpose 10.2 Refrigeration demand function 10.2.1 Purpose and enabling The "Refrigeration demand" function acquires refrigeration demand from various zones via the bus. The acquired refrigeration requests can be routed to another zone or further handled as a resulting setpoint condition (temperature request signal, chilled water flow setpoint) as a continuous or digital signal. Contrl.
10.2.3 Purpose Use universal controller as primary controller Enter an extra configuration to use a universal controller as primary controller (see Section 10.3 for application examples). Contrl.
Main menu > Commissioning > Communication > Distribution zones > Setting values Operating line Refrigeration distribution zone Range 1…31 Factory setting 1 Main menu > Commissioning > Settings > .... or Main menu > Settings > Aggregates > Refrigeration demand > Operating line Limit value request on Limit value request off Chilled water flow setpoint Flow temperature increase max Control action Request evaluation Limit value request on Range 0...100 % 0...100 % 0...
Request evaluation Use setting "Request evaluation" to determine if the max value or the average of the requests is to be used. When using the "Maximum" setting, the flow temperature is readjusted so that the valve position for the consumer with the greatest heat demand is 90%.
Main menu > Settings > Aggregates > Refrigeration demand > Setting values Operating line Setpoint at 0 Volt Setpoint at 10 Volt Limit value Notes Range –50…+50 °C 50…500 °C –50…+250 °C Factory setting 12 °C 6 °C 12 °C "Setpoint at 0 Volt" determines the flow temperature setpoint at DC 0 V. "Setpoint at 10 Volt" determines the flow temperature setpoint at DC 10 V. "Limit value" means limit value for refrigeration demand: Temperatures below this level are interpreted as "no refrigeration demand".
10.2.8 Display values Heat and refrigeration demand are visible on the password level under: Main menu > Aggregates > Heat and refrig demand > Operating line Refrig demand air handling Refrig demand air retreatment Refrig demand cooling surface Refrigeration demand Refrigeration demand relay Refrig demand modulating Range 0...100 % 0...100 % 0...100 % -50…250 °C On, Off 0…100 % Comment From RMU(A,U), RMS. From RXB, RXL, RDF, RDG. From RXB, RXL, RDF, RDG. From RMU (C). Output Q. Output Y.
Application 10.3 H/C demand application examples 10.3.1 Overview RMS705B as universal device can assume functions or partial functions of a consumer, primary controller, or generation. This results in sophisticated configurations and settings of the corresponding distribution zones via the Communication menu. The section explains the various applications and the required configuration and communication settings to transmit H/C demand.
10.3.3 Example Consumers Controller 1 controls a radiator. Heat demand in heat distribution zone 1 is sent to the bus. The relevant zone setting for communication is available from the hydraulic diagram. Plant Configuration diagram N.X1 Consumer °C N.X1 Contrl. N.Y1 A N.
Plant Configuration diagram N.X1 Heat distr zone 1 °C Contrl. Heat distr zone 1 T N.X1 Heat distr zone 2, source side N.Y1 A N.Q1 N.Y1 Configuration Main menu > Commissioning > Extra configuration > Aggregates > Heat demand > Operating line Primary controller Controller settings Communication settings Range Yes, No Main menu > Commissioning > Settings > …. or Main menu > Settings > Controller 1 > Setpoints > Operating line Setpoint high Range 500.0 °C > x > Setpoint low Setting 70.
w SpL 70 °C 40 °C 30 K 40 °C E1 Note 3123D037 Universal shift diagram 70 °C F1, F2, E2 Xn Key: E2 F2 F1 E1 1 SpL Xn W [Setp compensation 2] end [Setp compensation 2] start [Setp compensation 1] start [Setp compensation 1] end [Setp compensation 1] delta Setpoint low Heat demand [°C] Setpoint current See Section 11.3.2 for universal shift. 10.3.5 Generation The demand signals from the bus are acquired and sent to generation via digital output.
The bus collects the request signals. The result is used to control generation (boiler/refrigeration machine) via a rotary step switch. Example 2 Plant Configuration diagram Heat distr zone 1 Contrl. C Rotary step switch 1 D Heat generation C D N.Q1 Communication settings N.
In addition, a control circuit for generation can be configured. Example 3 Plant Configuration diagram N.X1 °C T Heat distr zone 1 N.X1 Heat generation Contrl. Communication settings T A N.Q1 N.Y1 Main menu > Commissioning > Communication > Distribution zones > Operating line Heat distribution zone Range 1…31 Setting 1 154 / 216 Siemens Building Technologies Switching and monitoring device RMS705B H/C demand, H/C changeover CE1P3124en 01.04.
10.3.6 Example Consumer and primary controller RMS705B contains a consumer side controller (controller 1) and a primary controller (controller 2). All requests from this heat distribution zone are acquired and evaluated (i.e. from own controller 1 and other consumers on the bus). Controller 2 may not be checked as consumer, as these demand signals were already sent to the "Heat distr zone source side". Plant Configuration diagram Primary controller Consumer N.X1 N.X1 N.X2 °C °C Contrl. N.
10.3.7 Example Consumer and generation RMS705B controls one consumer via controller 1. The request signals from this consumer are acquired together with others from the same heat distribution zone, and generation is controlled via a digital output. Plant Configuration diagram N.X1 Configuration Contrl. A N.Y1 N.Q1 Main menu > Commissioning > Extra configuration > Aggregates > Heat demand > Operating line Controller 1 Communication settings Heat distr zone 1 N.Y1 Heat generation Consumer N.
10.3.8 You cannot directly connect a consumer and a primary controller to generation. T Heat generation Primary controller Consumers Example 1 Prohibited combinations Example 2 The universal controller receiving its conditions from "d" or "a", may not be reconnected to the bus, as it would return its own heat demand to itself. As a result, the plant would never again switch off.
Application 10.4 H/C changeover 10.4.1 Application and functions Use the heating/cooling changeover function block to change over the operating mode (heating or cooling) in 2-pipe systems. The preselection heating/cooling is generated on the device or received as a heating/cooling signal from the bus. 23 The following types of changeover are available for H/C operating mode preselection: Changeover with operating mode selector via operation. Changeover by date. Changeover with analog input (e.
10.4.3 Preselected operating mode H/C Changeover with operating mode selector Configuration Main menu > Commissioning > Extra configuration > Heating/cooling ch'over > Operating line Operation selector Range No, Yes Factory setting No Preselect the H/C changeover signal in operating line "Preselection". The current state is displayed in operating line "2-pipe heating/cooling system".
Select two limit values for changeover if an analog input signal is used to generate the changeover signal. Example: Changeover by outside temperature When value "Heating off/cooling on" is exceeded, the H/C changeover signal is changed to cooling. When "Heating on/cooling off" is below the set value, the H/C changeover signal is changed to heating. "Attenuation" can be set for the input signal.
Lock individual sequences In operating mode "Heating", the sequence assigned to function block "Refrigeration demand" is locked. In operating mode "Cooling", the sequence assigned to function block "Heat demand" is locked. Example Locking for "Heating". Heat / refrigeration demand In operating mode "Heating", "Refrigeration demand relay" is locked, refrigeration demand set continuously to 0%, and no refrigeration demand signal is sent to the bus.
10.4.6 Heating/cooling changeover relay If the H/C signal is to be sent to the bus as well as a relay output to e.g. switch a valve or to be routed to a non-communicative device, the H/C changeover relay can be configured accordingly. Configuration Main menu > Commissioning > Extra configuration > Heating/cooling ch'over > Operating line Heating/cooling ch'over relay Range ---, N.Q1, N.
Dependencies 10.5 Combined examples: H/C demand, H/C changeover 10.5.1 Effect of H/C changeover and controller If configuration parameter "2-pipe heating/cooling system" is enabled and H/C demand of RMS705B is sent to the bus, the H/C changeover signal also acts on the corresponding RMS705B. Thus, only one sequence is enabled in this controller of the RMS705B (either cooling or heating). Example Controller 3 is connected to a 2-pipe system. Thus, controller 3 can only heat or only cool.
Notes on the example Configure a heat and refrigeration demand block for controller 3. Configure both heat and refrigeration distribution zones (see Section 10.3). Controllers 1 and 2 of RMS705B in the example do not act as 2-pipe system; their sequences act independent of the changeover signal: Note A 2-pipe system always acts on bus signals.
Purpose 11 Universal controller 11.1 Overview RMS705B provides 3 controllers with 2 sequential outputs each. The universal controller can provide control to an absolute variable or differential variable. 11.1.1 Enable the universal controller Assign an input to the main controlled variable to enable the universal controller. Main menu > Commissioning > Extra configuration > Controller 1…3 > Configuration Operating line Main controlled variable Differential input Range ---, N.X1, N.X2, ...
Application example 1 Control to absolute variable (e.g. chilled water control for chilled ceiling). N.X1 °C Modul. output A M N.Y1 Application example 2 Control to differential variable (e.g. solar storage plant). N.X1 °C N.X2 °C DO N.Q1 166 / 216 Siemens Building Technologies Switching and monitoring device RMS705B Universal controller CE1P3124en 01.04.
11.2 Makeup and mode of operation of the controller PID control controls the main controlled variable according to the defined setpoint. The controller can contain max 2 sequences in the following combinations: One sequence: Sequence 1 or Sequence 4. Two sequences: Sequence 1 and 4. Function diagram Seq. 1 Seq. 4 Setpoint low The "Setpoint low" (heating setpoint) is assigned to sequence 1. Its output signal acts reverse to the load (inputs variable).
11.2.1 Setpoints Main menu > Commissioning > Settings > .... or Main menu > Settings > Controller 1...3 > Setpoints > Setting values Note on differential control Display values Operating line Range Factory setting (type-dependent) Setpoint high Depending on selected type. 24 °C, 24 K, 60 %, 10 g/kg, 30 kJ/kg, 800 W/m2, 15 m/s, 100 bar, 1000 mbar, 1000 Pa, 1000 ppm, 100, 1000 Setpoint low Depending on selected type.
11.2.2 Troubleshooting If no aggregates are configured for the control sequences, the "Current setpoint" is displayed as "---". When the commissioning menu is exited, a check is carried out to see if the main controlled variable exists. If the main controlled variable or differential input is missing, the corresponding universal controller is switched off and a fault message is triggered (see "Fault messages"). Fault messages No.
11.3 Universal shift 11.3.1 Enable universal shift Assign an input to enable this function. Configuration Main menu > Commissioning > Extra configuration > Controller 1...3 > Operating line Universal shift 11.3.2 Adjustable values / Comment ---, N.X1, N.X2, ..., internal analog (analog values only). Mode of operation The setpoint can be shifted from a universal input or an internal analog signal.
11.3.3 Setting values Setting values for universal shift Main menu > Commissioning > Settings > …or Main menu > Settings > Controller 1...3 > Setpoint effects > Operating line [Setp compensation 2] delta [Setp compensation 2] end [Setp compensation 2] start [Setp compensation 1] start [Setp compensation 1] end [Setp compensation 1] delta Range Factory setting * 0.0 K 30.0 °C 20.0 °C 0.0 °C 0.0 °C 0.0 K * Depends on analog value; here, e.g. temperature °C. 11.3.
N.X1 General limiter N.X2 3124Z22en 11.4 You can select a general limiter function. The limitation function overrides the normal control function of the controller. See Section 11.4.2 for this function. 11.4.1 Enable function Assign an input to the function to enable this function. Configuration Main menu > Commissioning > Extra configuration > Controller 1...3 > Inputs > Adjustable values / Comment ---, N.X1, N.X2, ..., internal analog (analog values only) Enable general limitation.
11.4.2 Mode of operation The general limitation function overrides the normal control function with PI control to adhere to the limitation setpoint when the limitation setpoint is exceeded (up or down). Absolute/relative limitation You can configure absolute and relative limitation. If only one of these functions is desired, the other function can be disabled by setting the setpoints far outside.
Relative general limitation One setpoint each for maximum ("Differential high") and minimum "Differential low" differential temperature limitation can be entered. Notes The maximum and minimum differential temperature limitation can only be enabled if the main controlled variable and the general limiter are configured with the same unit (e.g. °C). The set limitation setpoints relate to the differential (e.g. temperature) between the main controlled variable and the general limiter.
N.X1 Eco setpoint changeover N.X2 3124Z25en 11.5 This function allows for changeover to Eco setpoints. Enabling Configuration To activate this function, configure the relevant digital input. Eco setpoint changeover is available at controllers 1...3. Main menu > Commissioning > Extra configuration > Controller 1…3 > Adjustable values / Comment ---, N.X1, N.X2, ... (digital values only). Operating line Setpoint switch Function diagram Seq. 1 Eco Setpoint low 11.5.1 Seq.
11.6 Start the universal controller Configure a start condition for the universal controller. The controller is stopped and started via a digital signal. Notes "Current setpoint" is displayed with "---" when a universal controller is stopped. The controller always runs without configured start condition. Main menu > Commissioning > Extra configuration > Controller 1...3 > Operating line Start condition 11.7 Adjustable values / Comment ---, N.X1, N.X2, ... (digital values only).
Purpose 12 Faults 12.1 Purpose and enabling Function block "Faults" collects all fault messages and sends them to the fault display, fault relays, and via bus. Faults Enabling Enable the fault block by configuring fault inputs 1...20 or assigning a fault relay. Note Many faults are acquired automatically and need not be specifically configured in function block "Faults". These faults are described with the relevant function. The fault block does not have to be enabled to display these faults. 12.
12.3 Connections Configuration Universal fault inputs (1…20) RMS705B provides function block "Faults" with 20 universal fault inputs. Any type of analog or digital signal can be connected to these inputs. Main menu > Commissioning > Extra configuration > Faults > Operating line Fault input 1 ... Fault input 20 Settings Setting values Adjustable values / Comment ---, N.X1, N.X2, ... ---, N.X1, N.X2, ...
Fault messages >1 fault input faulty No.
12.4 External fault button The fault block allows for connecting an external fault button. The external fault button has the same function as fault button " " on RMS705B. Both allow for concurrent operation. The current alarm state can be externally indicated via the fault relay. N.X1 N.X2 N.X3 N.X4 N.X5 N.X6 N.X7 N.X8 Faults Configuration Main menu > Commissioning > Extra configuration > Faults > Operating line Fault button external 12.
Setting values Main menu > Commissioning > Settings > .... or Main menu > Settings > Faults > Fault relay 1…2 > Operating line Fault priority Indication of fault Inversion Range Urgent, Not urgent, All Fault internally (optically), Fault internally (audibly), Fault via bus (audibly) ** Yes, No Factory setting All Fault internally (audibly) * No * Factory setting for "Fault relay 2": "Fault via bus (audibly)". ** Max. 1 bus fault message can be processed (even if the priorities are different).
13 Communication See basic documentation "Communication via KNX bus" (P3127) for a detailed description of communications. The following section only describes the most important settings to commission simple communications. 13.1 Enable communication Device communication is enabled when: The device address is entered (each bus member requires an individual device address). Bus power supply is available. RMS705B is not in the Commissioning menu. Setting values 13.
Clock time operation If a common clock time is to be used in the system, one device must be defined as "Master", all other devices as "Slave". When set to "Autonomous", the device neither sends nor receives the clock time. Remote setting clock slave "Remote setting clock slave" = Yes allows for adjusting the clock time at the slave. The time is sent to the master and transmitted to all other devices.
13.2.5 Universal transmission and reception zones Device RMS705B allows for universal data exchange via own terminals as well as via terminals of extension modules RMZ78x. Data between devices is exchanged via KNX bus. Function principle Universal inputs, digital and analog outputs of RMS705B can be used as transmission objects (for transmission zones). Universal inputs of RMS705B can be used as reception objects (in reception zones). Data is exchanged as if the device terminals were wired.
Overview Setting values Reception zones Inputs (N.X1…A8(2).X4) Main menu > Commissioning > Communication > LTE reception zones > Operating line N.X1…A8(2).X4 Setting values Range ---, 1…4095 Factory setting --- Main menu > Commissioning > Communication > LTE transmission zones > Operating line N.X1… A8(2).X4 N.Q1…A8(2).Q5 N.Y1…A8(2).Y2 Note Transmission zones Inputs (N.X1…A8(2).X4) Digital outputs (N.Q1…A8(2).Q5) Analog outputs (N.Y1…A8(2).
Example 1 The air quality average value of 2 air quality sensors is available in RMS705B (device 1). This value is sent as transmission object via an analog output and handled by RMS705B (device 2). Data exchange concept The following transmission and reception zone is engineered for the example: RMS705B, device 1 Terminal Transmission zone N.Y1 1 RMS705B, device 2 Terminal Reception zone Value N.
Example 2 A detached ventilation control (RMS705B, device 1) controls a rooftop fan (RMS705B, device 2). To do this, a release command created in device 1 is sent as transmission object via digital output and used by device 2 to start the rooftop fan. In reverse direction, any operating message created in device 2 is sent as transmission object via digital output to device 1 and processed accordingly.
Configuration diagram Unit 1 Unit 2 start Logic 1 C zone 1 zone 2 188 / 216 Siemens Building Technologies Switching and monitoring device RMS705B Communication CE1P3124en 01.04.
Example 3 An enthalpy value calculated from temperature and relative humidity is available in RMS705B (device 1). This value is sent as transmission object via an analog output and handled by the second device. Note Adjust the value range of the reception terminal (device 2) to the unchangeable value range of the calculated enthalpy prior to use in device 2. See Section 9.2.1 for the set value range for the enthalpy calculator.
13.2.6 Troubleshooting After expiration of a specific time (ca. 30 minutes), a fault message "[...X...] Sensor error" is sent if the bus should receive a signal from an input, but the signal is not available. Fault messages No. 5000 Text No bus power supply 5902 >1 identical LTE zone 6001 >1 identical device address Effect Non-urgent message; must not be acknowledged. Non-urgent message; must not be acknowledged. Urgent message; must be acknowledged.
14 Support for errors and faults 14.1 Error/fault code list Code no. 10 11 12 100 101...264 Cause of error/fault Outside temp sensor error >1 outside temperature sensor Outs sensor simulation active Simulation inputs active [N.X1] sensor error … RMZ788(2).
Code no. 6401 6402 7101… 7104 9000 9001 … 9020 9111 9112 9113 9114 9121 9122 9123 9124 9131 9132 9133 9134 9141 9142 9143 9144 Cause of error/fault [Calculator 1] formula invalid [Calculator 2] formula invalid Fault extension module Described in Section See 6.5.5 "Calculator" See 6.5.5 "Calculator" See 3.2.2 "Basic configuration" >1 fault input faulty [Fault inp 1] fault See 12.
14.2 Troubleshooting 14.2.1 Fault indicator If one or several fault messages are queued, the current message is displayed and indicated via the fault LED. Fault information is available via the following path: Display fault information Main menu > Faults > Menu item Faults current Fault history Fault status message bus Comment Currently queued faults. Individual listing of the 10 most recent faults. Faults of other devices on the bus: The fault button allows you to acknowledge error (fault) messages.
Acknowledge and reset Applies to all fault messages that must be acknowledged and reset on RMS705B. After acknowledgement on RMS705B, the fault message is maintained until the fault is no longer present. Only then can the fault message on RMS705B be reset. After resetting, the LED in the fault button extinguishes. Example A pump with fault contact is connected to the motor block's overload message. The fault contact of the pump is reset if the pump switches off because of this fault message.
14.3 Resolve errors Question Answer During commissioning, the wrong language 1. Press the ESC and OK buttons simultaneously. 2. Select the password level and enter 112 for password (same was selected. as international emergency call). Where do I find my language? 3. Press "OK" to confirm. The device activates English. 4. Select "Settings > Device > Language" to go to the desired language. RMS705B is completely off, but the following is displayed: "Operation locked, Remote operation".
Terminal connection concept 15 Electrical connections 15.1 Connection rules Passive sensor / signal source / contact sensing Konnex bus Active sensor / signal source Actuator DC 0...10 V Double terminal with internal connection CE- CE- CE+ CE+ X1 X2 X3 X4 X5 X6 X7 X8 G G Low-voltage side Mains voltage side Q12 Q14 Auxiliary terminals in the control panel N 2-speed fan Note PE Pump Only 1 solid wire or 1 stranded wire can be connected to each terminal (cage terminal).
X1 X2 Y1 Key X3 Y2 15.2 Connection terminals 15.2.1 RMS705B X4 X5 Y3 Y4 X6 X7 Q12 G, G0 G1 Q11 Q23 Q33 Q41 Q63 Q73 Q14 Q24 Q34 Q42 Q44 Q64 Q74 Rated voltage AC 24 V. Power supply AC 24 V for active sensors, detectors, monitors or signal sources. Measuring neutral for signal input. System neutral for signal output. Universal signal inputs for LG-Ni1000, 2x LG-Ni1000 (averaging), T1, Pt1000, DC 0...10 V, 0...1000 (setpoint), pulse, contact query (potential-free).
16 Appendix 16.1 Abbreviations Below is a list of the most common and possibly somewhat cryptic abbreviations in alphabetical order.
16.2 Configuration diagram 16.2.1 Explanation of diagram RMS705B has a large number of preconfigured function blocks. The configuration diagram shows the various configuration options. In the configuration diagram, planning engineers can enter and draw the interconnections of individual input and output functions (of their internal signals) together with the associated connection terminals.
16.2.2 Configuration rules Rules for inputs The input identifier can be a device or a special sensor (outside temperature, setpoint adjuster). Multiple use of inputs is possible, no limitations. Only inputs with compatible units are offered for input "wiring". Alarming for inputs is only active if the input is connected prior to the end of commissioning. If an input identifier changes, all related settings are changed automatically without explicit information (e.g.
16.2.3 Overview of configuration diagrams Basic configuration Configuration Function RMZ785 Add further inputs and outputs with extension modules RMZ785, RMZ787, and RMZ788. RMZ787 (1), (2) Controller functions are configured to these inputs/outputs. RMZ788 (1), (2) Specify which modules are connected to RMS705B in which order (position); max 4 modules. Input identifiers Inputs Configuration Functions N.X1…RMZ788(2).X4 Enter input identifier N.
Data acquisition Trend Configuration Functions Input Use the trend to log time-related progression of signals. (Section 6.1) 4 independent trend channels. Trend Logging of local inputs, room temperatures and outside temperature from the bus. Simultaneous display of 2 channels. Displays: 8-minutes, 8-hours, 24-hours and 6-day history. Event logger Configuration Functions Input Event logger for max. 10 events and their duration. (Section 6.2) Adjustable threshold values.
Aggregates Logic functions Configuration Functions Input 10 logic blocks. Logic function Generation of digital signal from continuous input signals. Operation selector Selectable logic for logic A, B and C. Relay output Selectable operation selector. Digital output Delay times can be set for output signal. (Section 8.1) C Logic 1 Selectable time formats. Comparator Configuration Functions Input 2 comparators. (Section 8.
Signal converter Min-Max-Average Configuration Functions Input 2 function blocks. Inputs split (Split) 5 inputs for min. max selection and average calculation. Min-Max-Average output 2 continuous signals DC 0…10 V. (Section 9.1) A…B Modulating output A…B Enthalpy calculator Configuration Functions Temperature input A…B, Calculation of the following variables from temperature and relative (Section 9.
Universal controller Universal controller Configuration Functions Main controlled variable 3 universal controllers, can be used as a P, PI or PID controller. Differential input Differential control possible. Universal shift Universal shift for setpoints. General limiter Min./max limitation function. Input setpoint changeover Connection of remote setpoint adjuster. Start condition Controller can be enabled via start input. Sequence outputs 1 heating sequence S1, (\_)
Siemens Building Technologies Switching and monitoring device RMS705B Appendix Logic 1 N.Y1 N.X2 A N.Y2 C On / Off Calendar N.X1 N.Y3 B Logic 2 N.X3 N.Y4 C On / Off N.X4 N.Q1 C Faults N.X5 N.Q2 Logic 3 N.X6 D N.Q3 C On / Off N.X7 N.Q4 Logic 4 N.X8 N.Q6 C On / Off Capital letter = physical input or output X = universal input Y = analog output Q = relay output N.
16.3 Menu tree All setting and readout values are arranged as operating lines in a software menu tree. The operating elements of the operator units allow for selecting and reading or setting according to access rights. The "Main menu" comprises the following menu items: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Commissioning Time switches Inputs Data acquisition Signal converter Aggregates Controller Holidays/special days Time of day/date Faults Settings Device information Data backup 16.
Operating line name Text for: Logic 0 Text for: Logic 1 N.X5 Text for: Logic 0 Text for: Logic 1 N.X6 Text for: Logic 0 Text for: Logic 1 N.X7 Text for: Logic 0 Text for: Logic 1 N.X8 Text for: Logic 0 Text for: Logic 1 A5.X1 Text for: Logic 0 Text for: Logic 1 A5.X2 Text for: Logic 0 Text for: Logic 1 A5.X3 Text for: Logic 0 Text for: Logic 1 A5.X4 Text for: Logic 0 Text for: Logic 1 A5.X5 Text for: Logic 0 Text for: Logic 1 A5.X6 Text for: Logic 0 Text for: Logic 1 A5.
Operating line name Text for: Logic 1 A7 (2).X2 Text for: Logic 0 Text for: Logic 1 A7 (2).X3 Text for: Logic 0 Text for: Logic 1 A7 (2).X4 Text for: Logic 0 Text for: Logic 1 A8 (1).X1 Text for: Logic 0 Text for: Logic 1 A8 (1).X2 Text for: Logic 0 Text for: Logic 1 A8 (1).X3 Text for: Logic 0 Text for: Logic 1 A8 (1).X4 Text for: Logic 0 Text for: Logic 1 A8 (2).X1 Text for: Logic 0 Text for: Logic 1 A8 (2).X2 Text for: Logic 0 Text for: Logic 1 A8 (2).X3 Text for: Logic 0 Text for: Logic 1 A8 (2).
16.4.3 Trend Main menu > Settings> Data acquisition > Trend > Trend channel 1…4 > Operating line name Trend channel 1 Trend channel 2 Trend channel 3 Trend channel 4 16.4.4 User-defined text Event logger Main menu > Settings > Data acquisition > Event logger 1…4 > Operating line name Event logger 1 Event logger 2 Event logger 3 Event logger 4 16.4.
16.4.8 Min-Max-Avr Main menu > Settings > Signal converter > Min-Max-Average 1…2 > Operating line name Min-Max-Average 1 Min-Max-Average 2 16.4.9 User-defined text Enthalpy Main menu > Settings > Signal converter > Enthalpy calculator > Operating line name Enthalpy calculator User-defined text 16.4.10 Signal doubler/inverter Main menu > Settings > Signal converter > Signal doubler-inverter > Operating line name Signal doubler-inverter User-defined text 16.4.
16.4.12 Motor Main menu > Settings > Aggregates > Motor > Motor 1…6 > Operating line name Motor 1 Motor 2 Motor 3 Motor 4 Motor 5 Motor 6 User-defined text 16.4.13 Modulating output Main menu > Settings > Aggregates > Modulating outputs > Modulating output A...H > Operating line name Modulating output A Modulating output B Modulating output C Modulating output D Modulating output E Modulating output F Modulating output G Modulating output H User-defined text 16.4.
16.4.17 Faults Main menu > Settings > Faults > Fault input 1..20 > Operating line name Fault text 1 Fault text 2 Fault text 3 Fault text 4 Fault text 5 Fault text 6 Fault text 7 Fault text 8 Fault text 9 Fault text 10 Fault text 11 Fault text 12 Fault text 13 Fault text 14 Fault text 15 Fault text 16 Fault text 17 Fault text 18 Fault text 19 Fault text 20 User-defined text 16.4.
Index A Access levels ........................................................ 17 Access right .......................................................... 17 Activate comparator .............................................. 74 Altitude ................................................................ 132 Analog inputs ........................................................ 31 Measuring range ............................................... 32 B Basic configuration ............................................
Input type .............................................................. 31 Internal refrigeration demand ............................. 146 L Language selection............................................... 25 Linear step switch ................................................. 80 Load input ........................................................... 103 Load-dependent switching.................................. 103 Lock individual sequences.................................. 161 Logic ....................
Siemens Switzerland Ltd Building Technologies Division International Headquarters Gubelstrasse 22 CH-6301 Zug Tel. +41 41-724 24 24 Fax +41 41-724 35 22 www.siemens.com/sbt © 2006-2010 Siemens Switzerland Ltd Subject to change 216 / 216 Siemens Building Technologies Switching and monitoring device RMS705B Index CE1P3124en 01.04.
