VT8600 Series BACnet Integration Rooftop Unit and Indoor Air Quality Controller Commercial and Lodging HVAC Applications BACnet CONTROLLER
BACnet® Integration Manual VT8600 Series VT8600 SERIES BACNET COMPATIBILITY SPECIFICATIONS Note: This document contains BACnet compatibility specifications of the Viconics VT8600 Room Controllers. The document follows the BACnet PICS format, although Viconics products have not yet been BTL certified as of November 2014 Vendor Name: Viconics Supported BACnet ® Services: The BACnet® communicating controller meets all requirements for designation as an Application Specific Controller (B-ASC).
BACnet® Integration Manual VT8600 Series DEVICE OBJECTS TABLE Type and Instance VT8600U5X00B Device Viconics Technologies Inc.
BACnet® Integration Manual VT8600 Series ANALOG OBJECT PROPERTIES Object Property Controller Parameter Input AI Output AO Values AV Read Only Read Only Read Only Event State Property 36 Indicates if object has an active event state associated with it Read Only Read Only Read Only Object Identifier Property 75 Unique ID number of an object on a network Read Only Read Only Read Only Object Name Property 77 Unique name of an object on a network Read Only Read Only Read Only Object T
BACnet® Integration Manual VT8600 Series BINARY OBJECT PROPERTIES Object Type Read/Write Settings Object Property Controller Parameter Input BI Output BO Values BV Read Only Read Only Read Only Active Text Property 4 Characterizes intended effect of the ACTIVE state of Present_Value property Read Only Read Only Read Only Event State Property 36 Indicates if object has an active event state associated with it Read Only Read Only Read Only Inactive Text Property 46 Characterizes intend
BACnet® Integration Manual VT8600 Series MULTISTATE OBJECT PROPERTIES Object Type Read/Write Settings Object Property Controller Parameter Inputs MSI Values MV Read Only Read Only Event State Property 36 Indicates if object has an active event state associated with it Read Only Read Only Number of States Property 74 Defines number of states Present_Value may have Read Only Read Only Object Identifier Property 75 Unique ID number of a device on a network Read Only Read Only Object Name
BACnet® Integration Manual VT8600 Series CSV OBJECT PROPERTIES Read/Write Object Property Controller Parameter Read Only Event State Property 36 Indicates object has an active event state associated with it Read Only Object Identifier Property 75 Unique ID number of a device on a network Read Only Object Name Property 77 Unique name of a device on a network Read Only Object Type Property 79 Indicates membership in a particular object type class Read / Write Present Value Property 85 Con
BACnet® Integration Manual VT8600 Series CAL OBJECT PROPERTIES Read/Write Object Property Controller Parameter Date List Property 23 List of calender entries.
BACnet® Integration Manual VT8600 Series Object Type Instance Minimum Range Value Maximum Range Value Default Value User HMI AV 2 0 11 0 Low Backlight AV 3 0% 100% 60% Night Backlight AV 4 0% 100% 5% Calibrate Temperature Sensor AV 7 - 5°F(2.
BACnet® Integration Manual VT8600 Series Object Type Instance Minimum Range Value Maximum Range Value Default Value Heating Setpoint Limit AV 58 40°F (4.5°C) 90°F (32°C) 90°F (32°C) Cooling Setpoint Limit AV 59 54°F (12°C) 100°F (37.5°C) 54°F (12°C) Temporary Occupancy Time AV 62 0H 24H 2H Minimum Deadband AV 63 2°F (1°C) 5°F (2.5°C) 2°F (1°C) Proportional Band AV 65 3°F (1.2°C) 10°F (5.6°C) 3°F (1.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR AI OBJECTS Object Name Object Type Instance Minimum Range Value Maximum Range Value Default Value Light Sensor Level AI 2 0 30000 N/A Rem.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR BO OBJECTS Object Type Instance Minimum Range Value Maximum Range Value Default Value G Fan Status BO 25 Off On Off Y1 Status BO 26 Off On Off Y2 Status BO 27 Off On Off W1 Status BO 28 Off On Off W2 Status BO 29 Off On Off UO 10 Binary Output BO 94 Off On Off BO 1 Auxiliary Binary Output BO 98 Off On Off UO 11 Binary Output BO 101 Off On Off UO 12 Binary Output BO 102
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS Object ID Long Message Background Color HMI Color MV 1 MV Main Display 2 MV Display Language Instance 3 MV 4 Time Format MV 5 Network Units MV 6 Network Language MV BACnet Baud Rate MV Occupancy Command Standby Mode Config Viconics Technologies Inc. 028-0437-00 7 | 8 MV 10 MV 9245 Langelier Blvd.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS Object ID System Mode MV Fan Mode 16 MV Use Standby Screen 17 MV UI 16 Configuration 32 MV UI 17 Configuration Instance 46 MV 47 UI 19 Configuration MV 49 Temperature Scale MV 51 Frost Protection MV 55 Setpoint Function MV 58 Smart Recovery MV 71 Econo Config MV 72 Schedule menu MV 73 Mechanical Cooling Allowed MV 79 BO1 Auxiliary Output Config MV 92 Fan Control in Heati
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS Object ID UO 9 Configuration MV UO 10 Configuration Instance 96 MV 97 UO 11 Configuration MV 98 UO 12 Configuration MV 99 French MV 101 Spanish MV 102 Chinese MV 103 Russian MV 104 Occupancy Source MV 110 Mode button MV 111 Wireless Zone 1 Set Function Wireless Zone 2 Set Function Wireless Zone 3 Set Function Viconics Technologies Inc.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS Object Type Wireless Zone 4 Set Function Wireless Zone 5 Set Function Wireless Zone 6 Set Function Wireless Zone 7 Set Function Wireless Zone 8 Set Function Wireless Zone 9 Set Function Viconics Technologies Inc. 028-0437-00 | 9245 Langelier Blvd.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MV OBJECTS Object Name Object Type Wireless Zone 10 Set Function MV Instance Index Text 1 None 2 Window 3 Door 4 Motion 5 Status 6 Remove Index Text 1 Offline 2 Online 1 Not Detected 2 Power On 3 No Network 4 Joined 5 Online 1 Occupied 2 Unoccupied 3 Override 4 Standby 1 None 2 Closed 3 Opened 4 Motion 5 No Motion 1 None 2 Normal 3 Low 1 No 2 Yes 3 Invalid 1 N
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MSI OBJECTS Object Type Wireless Zone 2 Battery MSI Wireless Zone 2 Paired MSI Wireless Zone 3 Status MSI Wireless Zone 3 Battery MSI Wireless Zone 3 Paired MSI Wireless Zone 4 Status MSI Wireless Zone 4 Battery MSI Wireless Zone 4 Paired MSI Wireless Zone 5 Status MSI Wireless Zone 5 Battery MSI Wireless Zone 5 Paired Viconics Technologies Inc. 028-0437-00 MSI | 9245 Langelier Blvd.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MSI OBJECTS Object Type Wireless Zone 6 Status MSI Wireless Zone 6 Battery MSI Wireless Zone 6 Paired MSI Wireless Zone 7 Status MSI Wireless Zone 7 Battery MSI Wireless Zone 7 Paired MSI Wireless Zone 8 Status MSI Wireless Zone 8 Battery MSI Wireless Zone 8 Paired MSI Wireless Zone 9 Status Viconics Technologies Inc. 028-0437-00 MSI | 9245 Langelier Blvd.
BACnet® Integration Manual VT8600 Series PROPERTY VALUE RANGE RESTRICTIONS FOR MSI OBJECTS Object Name Object Type Wireless Zone 9 Battery MSI Wireless Zone 9 Paired 1 None 2 Normal 3 Low 1 No 2 Yes 3 Invalid 1 None 2 Closed 3 Opened 300 MSI Wireless Zone 10 Paired Text 292 MSI Wireless Zone 10 Battery Index 291 MSI Wireless Zone 10 Status Instance 301 MSI 302 4 Motion 5 No Motion 1 None 2 Normal 3 Low 1 No 2 Yes 3 Invalid Default Value None No N
BACnet® Integration Manual VT8600 Series INTEGRATION – GLOBAL COMMANDS The following figure shows which objects from the controller can be monitored and controlled from the BAS front-end.
BACnet® Integration Manual VT8600 Series VT8600U5X00B INTEGRATION – GRAPHICAL USER INTERFACE OBJECTS Objects typically used in a GUI: • Room Temperature (AV100) • Occupied and Unoccupied Heat Setpoints (AV39 and AV43) • Occupied and Unoccupied Cool Setpoints (AV40 and AV44) • Outdoor Temperature (AV101) • Supply Temperature (AV102, if available) • Occupancy Command (MV10) • System Mode (MV16) • Auxiliary Output Status (BO98) • PI Heating Demand (AO21) • PI Cooling Demand (AO22) • Window Alarm (BV35) •
BACnet® Integration Manual VT8600 Series CONFIGURATION OBJECTS If your BAS allows you to remove objects, Viconics recommends removing all configuration objects once your setup is complete. This prevents unnecessary network polling and traffic. WIRING GUIDE Overview Viconics uses EIA-485 as the physical layer between their devices and supervisory controllers. A "Device” represents any product with an active EIA-485 network connection, including Viconics and non Viconics controllers.
BACnet® Integration Manual VT8600 Series WIRING GUIDE Cable Type Viconics recommends the use of balanced 22-24 AWG twisted pair with a characteristic impedance of 100130 ohms and capacitance of 30 pF/ft or lower. A braided shield is also 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 100 ohms and 120 ohms.
BACnet® Integration Manual VT8600 Series *NOTE: End Of Line resistors do not count as nodes. EOL Resistor EOL Resistor SC Supervisory Controller Node 1 Node 2 Node 3 Node 4 Node 5 Figure 4 : Example Network - 5 Nodes Figure 4 shows one node for the main SC panel and 4 for the controllers, for a total of 5 nodes. If there are more than 64 devices, install repeaters to extend the network. Maximum Cable Length The maximum length of a chain is related to its transmission speed.
BACnet® Integration Manual VT8600 Series The ideal configuration is to daisy chain the repeaters to the main panel. From each of these repeaters, a separate daisy chain branches off. Figure 5 demonstrates a valid use of repeaters in an EIA-485 network. Do not install repeaters in series as this may result in network reliability problems. Incorrect use of a repeater in an EIA-485 network is illustrated below in Figure 6.
BACnet® Integration Manual VT8600 Series The polarity of the connection to the cable is important. From one module to the other it is important that the same colored wire be connected to “plus” or “+” and the other colored wire be connected to the “minus” or ”-“. Figure 7 shows the proper MS/TP connections. NOTE: The Ref terminal should NEVER be used to wire shields.
BACnet® Integration Manual VT8600 Series Free Programmed Object or Loops Read and write MS/TP data on an “If Once” basis or a “Do Every Loop" basis instead of reading or writing to a third-party device’s object directly in the program. Otherwise, any read or write request occurs at the Supervisory Controller’s program scan rate, which may be in hundredths of milliseconds.
BACnet® Integration Manual VT8600 Series Writing and Binding Behaviour Refer to the proper section as per the table below for BACnet write command behaviour for specific objects and functionality.
BACnet® Integration Manual VT8600 Series Note C) Configuration Properties and User HMI objects. Writing and binding to the priority arrays 4 to 16 property is a method to use IF the required intent is to lock the local HMI and prevent local adjustments made by the user HMI values or the configuration property values.
BACnet® Integration Manual VT8600 Series Note C1) Configuration Properties and User HMI objects. The behaviour is similar to the behaviour described in NOTE C with the following exceptions and changes When writing and binding to the priority array 1 to 3, the controller WILL store and archive to flash memory. As soon as the new present value is received in priority array 1 to 3, the controller will use this new present value in all its internal control logics and functions.
BACnet® Integration Manual VT8600 Series Note E) Status objects. Object examples in this category: BV36 / Filter Alarm, AV21 / PI Heating Demand. All status objects are writable. Writing and binding to the priority array 4 to 16 property is a method to use IF the requirement is to lock the controller program and prevent statuses from being flagged based on the internal operation of the controller application programming.
BACnet® Integration Manual VT8600 Series Note E1) Status objects. Object examples in this category: BV36 / Filter Alarm, AV21 / PI Heating Demand. All status objects are writable. The behaviour is similar to the behaviour described in NOTE E with the following exceptions and changes When writing and binding to the priority array 1 to 3, the controller WILL store and archive to flash memory.
BACnet® Integration Manual VT8600 Series Note F) Physical hardware output objects. Object examples in this category: BO95 / BO4 High Speed fan, AO123 / UO11 Analog Status. All physical hardware output objects are writable. CAUTION NEEDS TO BE EXERCISED since bypassing the internal control functions of the controller CAN RESULT in damage to the equipment.
BACnet® Integration Manual VT8600 Series Note F1) Physical hardware output objects. Object examples in this category: BO95 / BO4 High Speed fan, AO123 / UO11 Analog Status. All physical hardware output objects are writable. CAUTION NEEDS TO BE EXERCISED since bypassing the internal control functions of the controller CAN RESULT in damage to the equipment.
BACnet® Integration Manual VT8600 Series TIPS AND THINGS YOU NEED TO KNOW • Each controller is delivered from the factory with the default MAC address set at 254. At this value, the BACnet® communication is not active and the device does not participate in the token pass. To enable the BACnet® communication, set the local MAC address configuration property of the controller to any valid value from 0 to 127.
BACnet® Integration Manual VT8600 Series APPENDIX A Important notice to all Niagara integrators For all intents and purposes, BO95 / BO4 High Speed Fan Output is used on all examples below.
BACnet® Integration Manual VT8600 Series As such, the controller now has an entry in priority array 16 of an object which effectively “overrides” it and by-passes the local control application program. The know issue with this is that by default, Niagara does not poll or update any of the priority arrays of an object and it is NOT reflected under the proxied object property sheet.
BACnet® Integration Manual VT8600 Series Now to confirm if there is an entry, simply view the property sheet of the BACnet object. In this view you will confirm an entry at level 16 or any other priority array level. If the point was overridden by accident and the normal controller operation is required and desired, simply set the overridden priority array to NULL to resume the controller normal operation under the relinquish default property value.
BACnet® Integration Manual VT8600 Series specific priority array from 1 to 16. As per the BACnet standard, when a controller receives an unspecified write command, the controller automatically assigns it to priority array level 16. As such, the controller now has an entry in priority array 16 of an object which effectively overrides it and bypasses the local control application program.
BACnet® Integration Manual VT8600 Series Viconics Technologies Inc. 028-0437-00 | 9245 Langelier Blvd. | St.-Leonard | Quebec | Canada www.viconics.com | sales@viconics.com | H1P 3K9 | Tel: (514) 321-5660 | Fax: (514) 321-4150 March 2015 © 2015 Viconics Technologies Inc. All rights reserved. Now when binding your logic block simply point to the relinquish default property of an object at the “fallback” value.
