Zoning Product Series VZ7260 & VZ7656 Series For Commercial Zoning Systems BACnet Integration Manual ITG-VZ7xxx-BAC-E04.
VZ7260 Product Overview The Viconics VZ7260 PI controller family is specifically designed for local pressure dependent VAV zone control within Viconics Zoning System product family. The product features a backlit LCD display with dedicated function menu buttons for simple user operation. Accurate temperature control is achieved due to the product’s PI proportional control algorithm, which virtually eliminates temperature offset associated with traditional, differential-based controllers.
BACnet System Overview Viconics VZ7260 zone controllers are used in conjunction with the VZ7656 roof top controllers. Combined, they are designed for operate typical single or multistage RTUs and their associated local zones. Typical BACnet zoning system installation Please refer to the following Viconics documents for detailed information and design guidelines for the BACnet zoning system version: As an example, a typical job layout system may feature three RTU controllers with thirty one total zones.
Contents Subject VZ7260 series Protocol Implementation Conformance Statements (PICS) Standard Object Types Supported List of Proprietary Properties List of Property Value Range List of Property Enumeration Set for BI's and BV's List of Property Enumeration Set for MV's Integration VZ7656 series Protocol Implementation Conformance Statements (PICS) Standard Object Types Supported List of Proprietary Properties List of Property Value Range List of Property Enumeration Set for BI's and BV's
VZ7260 Series Protocol Implementation Conformance Statement (PICS) Vendor Name: Viconics Vendor ID: 140 Product Name: VZ7260 Zoning System Zone Controller Product Model Number: VZ7260F5x00B Product Description: The Viconics VZ7260 PI controller family is specifically designed for local pressure dependent VAV zone control within Viconics Zoning System product family. The controllers are used in conjunction with the Viconics VZ76561000B Roof Top Controller for total system operation of each zones and the RTU.
Device Object List for VZ7260 Models Object Property Object Type Instance # 1 X R AV 1 X R/W AV 2 R/W AV 3 X R/W AV 4 X X R/W AV 5 Cfg Damper Max Pos X X R/W AV 6 Cfg Damper Max Heat Pos X X R/W AV 7 Cfg Heating Stpt Limit X X R/W AV 8 Cfg Cooling Spt Limit X X R/W AV 9 Cfg Deadband X X R/W AV 10 GUI Occupied Heat Spt X X R/W AV 11 GUI Occupied Cool Spt X X R/W AV 12 GUI Unoccupied Heat Spt X X R/W AV 13 GUI Unoccupied Cool Spt X X R/
VZ7260F5x00B VZ7260C5x00B Object Property Object Type Instance # GUI BI1 Status X X R BI 1 Cfg Temperature Scale X X R/W BV 1 Cfg Menu Scroll X X R/W BV 2 Cfg AO2 DA/RA X R/W BV 4 Cfg BO5 Time Base X X R/W BV 5 Cfg BO5 Conf X X R/W BV 6 GUI BO5 Status X X R BV 7 Sta AO2 Lock Status X R BV 8 Sta BO5 Lock Status X X R BV 9 GUI Room Temp Override X X R/W BV 10 Sta RTC Smart Recovery X X R BV 11 Cfg Setpoint Type X X R/W BV 12 Cfg Disabl
Device Object List for VZ7656 Models VZ7656E1000B Object Property Object Type Instance # X X X X X X X X X X X X X X X R R R R R R R R R R AI AI AI AI AI AV AV AV AV AV 1 5 4 2 3 1 21 18 17 40 X X R AV 12 X X R AV 11 X X X X X R R R R R R AV AV AV AV AV AV 42 39 41 16 15 28 VZ7656F1000B X X VZ7656H1000B GUI Discharge Air Temp GUI Analog Heat Output GUI By-Pass Damper / VFD GUI Return Air Temp GUI Static Pressure Cfg RTC MAC Cfg Device Instance GUI Highest PI Cool Demand GUI Highe
VZ7656H1000B VZ7656F1000B VZ7656E1000B Object Property Object Type Instance # Cfg Heating Lockout Temp Cfg High Balance Point Cfg Low Balance Point Cfg Maximum CO2 Level Cfg Maximum Fresh Air Cfg Minimum CO2 Level Cfg Minimum Fresh Air Cfg Minimum Supply Heat Setpoint Cfg Mixed Air Setpoint Cfg Password Cfg Power-up Delay Cfg Return Air Occ CL Spt Cfg Return Air Occ HT Spt Cfg Return Air Unocc CL Spt Cfg Return Air Unocc HT Spt Cfg Static Pressure Spt Cfg Supply Heat Lockout Temperature GUI Outdoor Te
VZ7656E1000B Object Property Object Type Instance # X X X X X X X X X X X X X X X X X R R R R R R R R/W R/W R/W R/W R/W R/W R/W R/W R/W R R R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W BI BI BI BI BV BV BV BV BV BV BV BV BV BV BV BV MV MV MV MV MV MV MV MV MV MV MV MV MV 8 18 14 10 7 3 12 4 11 9 5 2 10 8 1 6 1 4 11 18 2 9 7 13 16 8 6 3 10 X X X X R/W MV 5 X X X X X X X X X X X R/W R/W R/W R/W R MV MV MV MV SCH 12 15 17 14 1 X X X X X X X X X X X X X X X X X X X X X X X X X X
VZ7260 Device Object Table Object Name VZ7260F5x00B Type and Instance Device Object Property Object_Identifier Controller Parameter Unique ID number of a device on a network Property 75 (R,W) Object_Name Unique name of a Device on a network Property 77 (R,W) Model Name Controller Model number Property 70 (R) Firmware Revision Property 44 (R) Current BACnet firmware revision used by the controller Protocol Version Current BACnet firmware protocol version Property 98 (R) Default is Version 1 Pr
VZ7260 Standard Object Types Supported Supported Dynamically Creatable Dynamically Removable Optional Properties Supported Writable Properties Analog Input Reliability Out_of_Service Analog Value Reliability Present_Value Out_of_Service Binary Input Object Type a Reliability Active_Text Inactive_Text Reliability Active_Text Inactive_Text Binary Value Device Max_Master Max_Info_frames Multi-state Value Reliability States_Text Out_of_S
VZ7260 List of Property Value Range Restrictions for AI and AV objects Object Type and instance AI 1 Under range value 0% Over range value 100% Default value N/A Cfg Zone MAC AV 1 1 255 255 Cfg RTC MAC AV 2 1 127 4 Cfg AO2 OA Lock Setpoint AV 3 -40°F (-40°C) 122°F (50°C) 55°F (13°C) Cfg BO5 OA Lock Setpoint AV 4 -40°F (-40°C) 122°F (50°C) 32°F (0°C) Cfg Damper Min Pos AV 5 0% 100% 10% Cfg Damper Max Pos AV 6 0% 100% 100% Cfg Damper Max Heat Pos AV 7 0% 100% 30% Cfg Hea
VZ7260 List of Property Enumeration Sets for BI and BV objects Object Name Object Type and instance Inactive_Text Default value Active_Text GUI BI 1 Status BI 1 Not Activated Activated Not Activated GUI BI 2 Status BI 2 Not Activated Activated Not Activated Cfg Temperature Scale BV 1 °C °F °F Cfg Menu Scroll BV 2 No Scroll Scroll Active Scroll Active Cfg Motion Detector Function BV 3 Not Activated Activated Not Activated Cfg AO2 RA/DA BV 4 Direct Acting Reverse Acting Direc
VZ7260 List of Property Enumeration Sets for MV Objects Object Name Cfg Zone Baud Object Type and instance MV 1 BACnet Index 1 2 3 4 5 1 2 3 Cfg Reheat Configuration MV 2 4 5 Cfg BI1 Configuration MV 3 Cfg PI Heat Weight MV 4 Cfg PI Cool Weight MV 5 Cfg Temporary Occupancy Time MV 6 1 2 3 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 Text 9600 ( Bps ) 19200 ( Bps ) 38400 ( Bps ) 76800 ( Bps ) Auto None Analog Duct Heater Only On/Off Duct Heater Only On/Off Perimeter Heater Only Analog
Object Name Network Handle Object Type and instance MV 7 BACnet Index 1 2 Text Default value Default Zone Handle Default Minus Occupancy Full Release 3 Default Zone Handle This property is used to release the functions of the VZ7260 Zone controller from its attached master RTC VZ7656. It is used when remote scheduling of the zones are required externally to the master VZ7656 RTU controller or when integration is required without a VZ7656 RTU controller.
Object Name Cfg BO3-BO4 Floating Time Cfg A14 Configuration Cfg Proportional Band Object Type and instance MV 13 MV 14 MV 15 BACnet Index Text 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 1 0.5 minutes 1 minute 1.5 minutes 2 minutes 2.5 minutes 3 minutes 3.5 minutes 4 minutes 4.5 minutes 5 minutes 5.5 minutes 6 minutes 6.5 minutes 7 minutes 7.5 minutes 8 minutes 2 4°F(2.2°C) 3 5°F(2.8°C) 4 6°F(3.3°C) 5 7°F(3.9°C) 6 8°F(4.4°C) 7 9°F(5.0°C) 8 10°F(5.6°C) 8.
VZ7260 Integration Please note that no special programming or network bindings are required for the Zoning system to operate. As such the VZ7260 Zone controllers and their associated VZ7656 RTU controller can operate in stand-alone mode with all required data transfer binding already handled by the controllers themselves. If BACnet supervision is added, it is only for GUI, trends, logs or remote views of the devices. The zoning system operation is already taken care of by the controllers themselves.
VZ7656 Series Protocol Implementation Conformance Statement (PICS) Vendor Name: Viconics Vendor ID: 140 Product Name: VZ7656 Zoning System RTU Controller Product Model Number: VZ76561000B Product Description: The Viconics VZ76561000B controller is specifically designed for RTU control of the Viconics Zoning System product family. The RTU controller is designed for single stage or multi-stage control of heating and cooling equipment such as rooftop and self-contained units used in zoning systems.
VZ7656 Device Object Table Object Name VZ7656 Type and Instance Device Object Property Object_Identifier Controller Parameter Unique ID number of a device on a network Property 75 (R,W) Object_Name Unique name of a Device on a network Property 77 (R,W) Model Name Controller Model number Property 70 (R) Firmware Revision Property 44 (R) Current BACnet firmware revision used by the controller Protocol Version Current BACnet firmware protocol version Property 98 (R) Default is Version 1 Protocol
VZ7656 Standard Object Types Supported Object Type Supported Dynamically Creatable Dynamically Removable Optional Properties Supported Writable Properties Analog Input Reliability Out_of_Service Analog Value Reliability Present_Value Out_of_Service Binary Input a Reliability Active_Text Inactive_Text Reliability Active_Text Inactive_Text Binary Value Device Max_Master Max_Info_frames Multi-state Value Schedule Reliability St
VZ7656 List of Property Value Range Restrictions for AI and AV objects Object Type and instance Under range value Over range value Default value GUI Discharge Air Temp AI 1 -40°F (-40°C) 150°F (65°C) N/A GUI Return Air Temp AI 2 -40°F (-40°C) 122°F (50°C) N/A GUI Static Pressure Input AI 3 0” WC (0 Pa) 5” WC (1250 Pa) N/A GUI By-Pass Damper AI 4 0% 100% N/A Cfg RTC MAC AV 1 1 255 4 Cfg Heating Lockout Temperature AV 2 -15°F (-26°C) 120°F (49°C) 120°F (49°C) Cfg Cooling Lock
Cfg Supply Heat Lockout AV 27 -15°F(-26°C) 120°F(49°C) 32°F(0°C) GUI Supply PI Heat Demand AV 28 0% 100% N/A Cfg Changeover Setpoint AV 30 14°F(-26°C) 70°F(-26°C) 55°F(13°C) Cfg Mixed Air Setpoint AV 31 50°F(10°C) 90°F(32°C) 55°F(13°C) Cfg Economizer Min Position AV 32 0% 100% 0% Cfg Economizer Max Position AV 33 0% 100% Cfg Fresh Air Max Range AV 34 0 CFM (0 l/s) Cfg Minimum Fresh Air AV 35 0 CFM (0 l/s) Cfg Maximum Fresh Air AV 36 0 CFM (0 l/s) Cfg Minimum CO2 Level
VZ7656 List of Property Enumeration Sets for BI and BV objects Object Name Object Type and instance Inactive_Text Active_Text Default value GUI G Fan BI 1 Off On N/A GUI Y1 Cool BI 2 Off On N/A GUI Y2 Cool BI 3 Off On N/A GUI W1 Heat BI 4 Off On N/A GUI W2 Heat BI 5 Off On N/A GUI BI 1 Status BI 6 Not Activated Activated Not Activated GUI Aux Status BI 7 Off On N/A Sta Heating Stages Lockout Status BI 8 Not Activated Activated Not Activated Sta Cooling Stages Loc
Cfg Fan Purge Delay BV 5 Off On Off GUI Outdoor Temp Override BV 6 Normal Override Normal Cfg Smart Recovery BV 7 Off Active Off Cfg Static Pressure Ctrl Type BV 8 By-Pass Damper VFD VFD Cfg Emergency Heat Mode BV 9 Off On On Cfg Reversing Valve BV 10 Normally Cool Normally Heat Normally Heat Cfg Compressor Interlock BV 11 Off On On Sta Supply Heat Lockout Status BV 12 Inactive Active Active 25
VZ7656 List of Property Enumeration Sets for MV Objects Object Name Object Type and instance Cfg RTC Baud MV 1 Cfg Control Type MV 2 Cfg Local Keypad Lockout MV 3 GUI Zone Sequence MV 4 Cfg Static Pressure Transducer Range MV 5 Cfg Heating Stages MV 6 Cfg Cooling Stages MV 7 Cfg Heating CPH MV 8 Cfg Cooling CPH MV 9 Cfg Min.
Object Name Object Type and instance Cfg BI1 Configuration MV 11 Cfg Temporary Occupancy Time MV 12 Cfg Event Display MV 13 GUI Occupancy MV 14 GUI System Mode MV 15 Cfg Heat Pump Stages MV 16 GUI System Mode HP MV 17 Cfg CO2 Control Type MV 18 BACnet Index Text 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 1 2 3 1 2 None RemNSB RemOVR Filter Service 0 hour 1 hour 2 hours 3 hours 4 hours 5 hours 6 hours 7 hours 8 hours 9 hours 10 hours 11 hours 12 hours 2 Events 4 Events Local Occupancy O
VZ7656 Integration Please note that no special programming or network bindings are required for the Zoning system to operate. As such the VZ7260 Zone controllers & their associated VZ7656 RTU controller can operate in stand-alone mode with all required data transfer binding already handled by the controllers themselves. If BACnet supervision is added, it is only for GUI, trends, logs or remote views of the devices. The zoning system operation is already taken care of by the controllers.
Wiring Guide Overview Viconics uses EIA-485 as the physical layer between their devices and supervisory controllers. For clarity we will use the term “Device” to represent any product with an active EIA-485 network connection, including Viconics and non-Viconics controllers.
Cable Type Viconics recommends the use of balanced 22-24 AWG twisted pair with characteristic impedance of 100-130 ohms, capacitance of 30 pF per ft or lower. A braided shield is recommended. Impedance A value based on the inherent conductance, resistance, capacitance and inductance that represent the impedance of an infinitely long cable. The nominal impedance of the cable should be between 100Ωand 120Ω. However using120Ω will result in a lighter load on the network.
Maximum Number of Devices A maximum of 64 nodes is allowed on a single daisy chain segment. A node is defined as any device (Panel, Zone, Repeater, etc) connected to the RS485 network. Terminators do not count as a node. To determine the number of nodes on a network, add the following: One node for each device, including main panels One node for each repeater on the chain For the example in (Figure 4), we have one node for the main Panel, plus 4 for the controllers, for a total of 5 nodes.
Figure 5: Correct usage – repeaters are daisy chained to the supervisory controller and separate daisy chains branch from each repeater. Do not install repeaters in series, as this may result in network reliability problems. (Figure 6) demonstrates an incorrect use of a repeater in an EIA-485 network.
End of Line (EOL) Resistors MS/TP network must be properly terminated. For daisy chain configurations, you must install an EOL resistor at each end of the daisy chain. Depending on your MSTP network configuration, the resistance value of the EOL resistor may change: Viconics’ devices are installed at both ends of the MSTP network: 120 Ohms resistor should be installed at each end.
Table 2 shows the different possibilities with the Status LED behaviour of the BACnet module. Condition of the Status LED Possible Cause 2 short blink (no wires connected to the module) Controller is searching for an MSTP BACnet network.
Things You Need To Know After the initial configuration of your device and if your BAS allows you to remove objects, we suggest that you remove all the configuration objects to prevent unnecessary polling of non used objects and to help speed up the network. In its default mode of operation (Auto-Bauding), the device will automatically match its baud rate to the baud rate of the network. Automatic baud rate detection will occur when the MS/TP communication port is initialized (on power up).
