VMB1TS Temperature sensor module for the Velbus system VMB1TS manual – edition 2 1
CONTENTS DESCRIPTION ........................................................................................................................... 3 CHARACTERISTICS .................................................................................................................. 3 VELBUS CHARACTERISTICS ................................................................................................... 5 OVERVIEW SENSOR MODULE ....................................................................................
DESCRIPTION The sensor module can be used to measure and send temperatures over the Velbus-system. In combination with a relay module (VMB4RY or VMB1RY) a thermostat can be set-up to control a heating or cooling installation. Setting the comfort, day, night or anti-freeze mode can be done via the local pushbutton of with pushbuttons that are connected to the Velbus.
◊ Storage capacity of 10 different pushbuttons per control function ◊ LED indications for: • thermostat function for cooling • comfort mode • day mode • night mode • heater/air-conditioning status • power supply voltage • receiving/transmitting data over the Velbus ◊ Settings for: • the desired temperature • the desired comfort temperature for heating • the desired day temperature for heating • the desired night temperature for heating • the anti-freeze safeguard temperature • the heating limit (upper limit
VELBUS CHARACTERISTICS • • • • • • • 2-wire communication for Velbus data and 2 wires for power supply data transmission: 16.
• local control panel: lock unlock • memory: read (over)write • set the status of the output LED • switching off the indication LED on the pushbutton module(s) • switch unjam function of circulation pump and/or heating valve on or off • output LED handling: switch off switch on flash flash slowly flash (very) fast • request: module type content of the communication error counter the sensor temperature (min/max) and setting the time interval for transmitting data the time statistics
OVERVIEW SENSOR MODULE COOL DAY BOOST HEAT LED indication 1 2 3 4 5 Cooling mode Comfort mode Day mode Night mode Heating or air-conditioning on 6 Sensor Temperature sensor 7 Controls Mode pushbutton Settings 8 9 Address setting Terminator Manual control 10 11 12 13 7+11 7+12 7+13 (COOL) cooler (DAY) central heating system in day mode (BOOST) boost heater/cooler (HEAT) heater 14 15 Power supply 12 to 18Vdc Velbus (Mode + DAY) high temp.alarm (Mode + BOOST) low temp.
EMBEDDING THE TEMPERATURE SENSOR The temperature sensor VMB1TS can be embedded in combination with 2 blank frames VMBFBI and a Velbus cover plate VMBFDG or VMBFLG. Push the modules from the back into the cover plate It is also possible to use a 2- or 3-module wide frame with cover plate from the BTicino Living series. The module must be pushed into the build-in frame from the front It is also possible to use a 3-module wide frame with cover plate from the BTicino Light or Light Tech series.
EMBEDDING A TEMPERATURE SENSOR TOGETHER WITH A CONTROLLER The sensor (VMB1TS) can be embedded together with a controller (VMB1TC) in a 4-module wide frame with cover plate from the BTicino Living series. The module must be pushed into the build-in frame from the front. The sensor (VMB1TS) can be build-in together with a controller (VMB1TC) in a 4-module wide frame with cover plate from the BTicino Light of Light Tech series.
OVERVIEW HEATING INSTALLATION A heating installation usually consists of radiators or convectors, a boiler, circulation pump and a collector with valves for every radiator group. Every room is equipped with a temperature sensor VMB1TS which is controlled by one or multiple temperature controllers VMB1TC. The sensors in turn steer the relay modules VMB4RY (or VMB1RY) that control the valves.
WIRING To interconnect the Velbus modules the use of twisted-pair cable (EIB 2x2x0.8mm2, UTP 8x0.51mm - CAT5 or equivalent) is recommended. When a lot of modules (more than 10) are connected to the cable or longer cable lengths (more than 50m) are used, it is important to use a cable with appropriate diameter (0.5mm² or higher). Connect the bus to the module (beware of the polarity). Connect the 12V to 18V direct current to the module (beware of the polarity).
Relay cabinet wiring 12 VMB1TS manual – edition 2 – rev.
Terminator Terminator Normally only 2 ‘TERM’ terminators must be used in a complete Velbus installation. Usually this will be on one module inside the distribution box and on the module which is physically located furthest from the distribution box. On all other modules, the terminator must be removed.
LED INDICATION Anti-freeze, night, day or comfort mode In rooms that have a temperature sensor VMB1TS the heating (or air-conditioning) can be set in 4 different modes: comfort, day, night or anti-freeze. Every mode has its own desired temperature setting. The selected mode is indicated with LEDs. The sensor module is set to anti-freeze mode when the comfort, day and night mode LEDs are off.
OPERATION Pushing the push button repeatedly will switch the module between anti-freeze, night, day or comfort mode successively. When the comfort, day or night mode LED is flashing, the sensor module is set temporarily (sleep timer) to the indicated mode. During this time the program is ignored When the sleep timer expires, the sensor module will resume the program or in case no program is present will return to its previous setting. Remarks: • Anti-freeze mode can not be set temporarily.
SETTINGS Following parameters can be set via the temperature controller (see manual VMB1TC) or via the Velbus link software: • the zone to which the sensor belongs • the operating mode (heating or cooling) • switching the unjam function of the circulation pump and/or heating valve on or off • the desired comfort temperature for heating • the desired day temperature for heating • the desired night temperature for heating • the anti-freeze safeguard temperature • the heating limit (upper limit of the heating
Time statistics For every mode (comfort, day, night or anti-freeze) the time during which the heating or air-conditioning was one is stored. These statistics can be recalled or reset via the temperature controller (VMB1TC) or through the Velbus link software via a PC connected to the Velbus PC interface (VMB1USB, VMB1RS of VMBRSUSB). Minimum and maximum temperature The sensor records the minimum and maximum temperature.
CONFIGURING THE OUTPUTS The sensor module transmit messages over the Velbus when the status of one of its multiple outputs changes.
Allocate a relay channel to control a valve When room temperature drops below the desired value, the temperature sensor sends a request on the bus to energize the relay that opens the valve. When the room temperature rises above the desired value, another request by the temperature sensor is transmitted over the bus to de-energize the relay thus to close the valve. In this example, relay channel 1 is used to steer the heating valve. 1.
Allocate a relay channel to control the fan (boost) Some convector types have a built-in fan for fast heating when the current temperature differs too much from the desired. In this example the fan is steered by relay channel 2. 1. Set the sensor module in anti-freeze mode by pressing the push button on the front panel repeatedly until all LEDs are off. 5. Press and hold the second push button (BOOST) of the temperature sensor until the relay is energised and the red LED on the sensor module flashes. 2.
Allocate a relay channel to set the boiler in day mode Some heating boilers have a contact input to set them in day or night mode. In night mode, the boiler temperature is set approximately 10 degrees lower. The heater boiler must be placed in day mode as soon as one of the sensor modules switches to day or comfort mode. In this example, this is done using relay channel 3. 1. Set all sensor modules in anti-freeze mode by pressing the push button on the front panel repeatedly until all LEDs are off. 2.
Allocate a relay channel to steer an air-conditioner The temperature sensor can also be used to control an air-conditioning system. When the sensor is in cooling mode, the heating will be switched to anti-freeze mode. When room temperature rises above the desired value, a relay must be energised to switch on the air-conditioner. When the temperature drops below the desired value the relay must be de-energized to stop cooling. In this example relay channel 4 is used to steer the air-conditioner. 1.
Allocate a relay channel for the circulation pump Some valves have a contact that closes when the valve is open. By wiring all the contacts in parallel, the circulation pump can be steered. For valves that do not have these contacts, a relay can be assigned to the temperature sensors to steer the circulation pump. In this example the pump must be active as soon as one of the sensor modules indicates heating is required. This can be done e.g. through relay channel 1 of a relay module. 1.
Allocate a relay channel for the low temperature alarm The sensor module contains an anti-freeze protection, but when the heating system is down it is still possible that the temperature in a room drops. To warn the user that the room temperature reaches freezing point a relay can be energised. This relay channel can be used e.g. to switch on a control light or an electrical heater. As an example relay channel 2 of a relay module is used. 1.
Allocate a relay channel for the high temperature alarm The sensor module can also control a relay when room temperature should reach extreme high values. This situation might occur when a heating valve is broken e.g. it does not close anymore causing the room to keep heating up. The relay contact can than be used e.g. to switch on a warning light or activate an audible warning signal. As an example, relay channel 3 of a relay module is used. 1.
REMOTE CONTROL The sensor module can be operated locally, but also remotely via a temperature controller VMB1TC (refer to the manual of the controller). The sensor module can also be operated remotely by connecting pushbuttons to the Velbus.
In the example below we use a control panel VMB4PD of which 8 controls are linked to a temperature sensor. The labels on the display are assigned as indicated (refer to the manual of the VMB4PD): Comfort Day Night Anti-freeze The labels on the display for the second page are assigned as indicated: Heating Cooling Lock Unlock Remotely control comfort mode With the upper left button of the control panel the temperature sensor is set to comfort mode. 1.
Remotely control day mode With the upper right button of the control panel the temperature sensor is set to day mode. 1. Remember the address of the sensor module to reinstate it later. 3. Press and hold the ‘day’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘E1’. The day LED is flashing to indicate learning mode for pushbuttons that place the module in day mode.
Remotely control night mode With the lower left button of the control panel the temperature sensor is set to night mode. 1. Remember the address of the sensor module to reinstate it later. 3. Press and hold the ‘night’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘D1’. The night LED is flashing to indicate learning mode for pushbuttons that place the module in night mode.
Remotely control anti-freeze mode With the lower right button of the control panel the temperature sensor is set to anti-freeze mode. 1. Remember the address of the sensor module to reinstate it later. 3. Press and hold the ‘anti-freeze’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘C1’. The day, night and comfort LEDs are flashing to indicate learning mode for pushbuttons that place the module in anti-freeze mode.
Remotely set heating mode With the upper left button on the second page of the control panel the temperature sensor is set in heating mode. 1. Remember the address of the sensor module to reinstate it later. 4. Press and hold the ‘Heating’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘B1’. The heating LED flashes to indicate learning mode for pushbuttons that place the module in heating mode.
Remotely set cooling mode With the lower left button on the second page of the control panel the temperature sensor is set in cooling mode. 1. Remember the address of the sensor module to reinstate it later. 4. Press and hold the ‘Cooling’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘A1’. The cooling mode LED flashes to indicate learning mode for pushbuttons that place the module in cooling mode.
Remotely lock local operation With the upper right button on the second page of the control panel locally operating the temperature sensor can be disabled. 1. Remember the address of the sensor module to reinstate it later. 4. Press and hold the ‘Lock’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘91’. All LEDs are flashing to indicate learning mode for pushbuttons that lock local operation.
Remotely unlock local operation With the lower right button on the second page of the control panel locally operating the temperature sensor can be enabled. 1. Remember the address of the sensor module to reinstate it later. 4. Press and hold the ‘Unlock’ pushbutton (at least 1 second) until its indication LED starts flashing. 2. Set the address of the sensor module to ‘81’. The cooling, comfort, day and night LEDs are flashing to indicate learning mode for pushbuttons that unlock local operation.
Deleting an assigned pushbutton Always remember the address of the sensor module to reinstate it later on. Set the address of the sensor module to the function for which pushbuttons must be deleted.
Deleting all assigned pushbuttons for a certain function Always remember the address of the sensor module to reinstate it later on. Set the address of the sensor module to the function for which pushbuttons must be deleted.
Deleting all assigned pushbuttons Always remember the address of the sensor module to reinstate it later on. Set the address of the sensor module to ‘F1’. the comfort and day LED are flashing. Deleting all assigned pushbuttons for all functions at once is done by pressing the mode pushbutton on the sensor module for about 10 seconds. The indication LEDs on the sensor module will first switch off and about 7 seconds later will start flashing to confirm the deleting operation.
SWITCHING TO ANTI FREEZE MODE THROUGH WINDOW CONTACTS The heating can be switched automatically in anti freeze mode as soon as a window featuring window contacts is opened. The LEDs will switch off on the VMB1TS temperature sensor. The VMB1TC temperature controller displays an anti freeze and key symbol together with a blinking mode LED. Locatie 5 ↑ Badkamer 0m Mode ← 18 Menu → ↓ The heating cannot be set into another mode as long as a window remains open.
DIFFERENTIAL THERMOSTAT Using two sensors, a differential thermostat can be created. When the temperature difference between both sensors crosses a preset value, a relay channel can be activated. To achieve this, the first sensors must know the address of the second one. The second sensor must than be linked to a relay channel. The temperature difference value is set on the first sensor. The settings can be done via a temperature controller VMB1TC or via the Velbus link program.
The passage automatically 3° cooler than the office When the sensor module in the office is set to day-mode, the temperature in the passage must be 3° lower than the office. Is the day temperature of the office is set to 20°C the desired passage temperature will be 17°C. When the sensor module in the office is set to night-mode, the temperature in the passage must be 3° lower than the office. Is the night temperature of the office is set to 15°C the desired passage temperature will be 12°C.
Passive cooling of a bedroom During summer time the bedroom is cooled via a fan that extracts air from a cooler room. Mount a temperature sensor in both rooms. The temperature sensor of the bedroom is set to cooling mode and the cooling output is linked to a relay channel that controls the fan. When the temperature in the cooler room is about 3 degrees lower than the bedroom temperature the fan is activated.
VERIFY SOFTWARE VERSION The software version can be verified via the Velbus link software. Check on http://www.velbus.eu whether you have the latest version. If a newer version is available, download it. Connect the Velbus interface to a PC and run the upgrade-software and follow the instructions on the screen. Remark: Upgrading a module is not without risk. Do not interrupt the process! If for any reason the upgrade should fail, the module will cease normal operation.
Refer to our website for more information: www.velbus.
