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OPERATING INSTRUCTIONS
BACNET CONTROLLER- EVAP
The BACnet Controller is a native BACnet
communication link between a BAS (Building Automation System) and the Cambridge unit. The
controller provides precise monitoring and control of connected points.
®
BACnet
MS/TP compliant operating at up to 76.8 kilobaud
BTL-certified controller
Standard input points for fan status, cooling status, discharge temperature, zone temperature, and
outdoor temperature
Standard output points for fan control, cooling control and fill and drain valves
Selectable operating modes (fan off/on/auto, cooling off/on/auto, heating off/on/auto)
Removable screw terminal blocks
Onboard USB port for firmware upgrades
Local user interface display for commissioning and monitoring
Cambridge Air Solutions
BACnet Controller EVAP Technical Manual
®
, fully programmable, direct digital controller. It provides a
10/31/2022
Version 4.0.2.0002
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Table of Contents
Summary of Contents for Cambridge Air Solutions BACNET EVAP
- Page 1 OPERATING INSTRUCTIONS BACNET CONTROLLER- EVAP ® The BACnet Controller is a native BACnet , fully programmable, direct digital controller. It provides a communication link between a BAS (Building Automation System) and the Cambridge unit. The controller provides precise monitoring and control of connected points. ...
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Page 2: Network Parameters
MS/TP NETWORK CONNECTION NETWORK PARAMETERS Use stranded 3-wire twisted pair, Before operating controllers on a bus, you must shielded cable to connect to FC BUS set a valid and unique device address for each (blue) terminals. controller on the bus through the local display or ... -
Page 3: Input Objects
POINTS LISTS The following lists of points are accessible via the network. Points listed as optional may not be applicable to all systems. INPUT OBJECTS Type Object Input# Description Writable Values Binary MV:29563 BI:1 Burner Status (optional) False 0 = Off / 1 = On Binary MV:29507 BI:2... - Page 4 MULTISTATE VALUE OBJECTS Object Description Writable States Values 1 = Heating 2 = Satisfied MV:29501 Unit Status False 3 = Cooling 4 = Temperature Unreliable 1 = Auto 2 = 1200 MV:29505 FCB Baud Rate True 3 = 9600 4 = 19200 5 = 38400 MV:29506 Operating Baud Rate...
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Page 5: Analog Value Objects
ANALOG VALUE OBJECTS Object Description Writable Units Range Default AV:29501 Device Address True 4 - 127 AV:29502 Device Object ID True 0 - 4194302 AV:29510 DAT Sensor Offset True °F -10 – 10 0°F AV:29512 Deadband True °F 0 – 20 0°F AV:29513 High Drain Threshold... -
Page 6: Operating Modes
OPERATING MODES HEATING / UNOCCUPIED FAN / OCCUPIED Off – Heating doesn’t run Off – Fan doesn’t run On – Heating operates continuously On – Fan operates continuously Auto – Heating operates if Zone Auto –... -
Page 7: Local Display
LOCAL DISPLAY The controller includes an onboard illuminated LCD display and 4 buttons for monitoring and adjustment. Label Name Description Escape Exit the current menu level and go up one level Access the menu Enter Accept the current selection Scroll through menu selections Adjust current parameter selection Down SETTING COMMON PARAMETERS... -
Page 8: Troubleshooting
TROUBLESHOOTING POWER The status LEDs indicate power connection and network FAULT SA BUS communication FC BUS MODBUS Label Color Normal State Description On Steady = Power Connected Power Green On Steady Off Steady = No Supply Power. Check Output wiring for short circuits and cycle power to the controller. -
Page 9: Wiring Checklist
COMMUNICATION ISSUES CONTROLLER PARAMETERS CHECKLIST □ Does each controller have a unique MAC address? Default = 4, Range = 4 – 127 Network setting = AV:3003 Keypad access = ent > >Controller>Network>Address □ Does each controller have a unique Object ID? Default = 0, Range = 0 –... -
Page 10: Menu Structure
MENU STRUCTURE The following is the menu structure for accessing settings via the local display or MAP gateway. STATUS (continued from left) ├Unit Status │├Pump 1 ├System enable │├Pump 2 ├Heat Cool Mode │├Pump 3 ├Effective Discharge Air Temperature │├Pump 4 ├Effective Outdoor Temperature │├Supply Fan Command ├Effective Zone Air Temperature... - Page 11 COMMISSIONING (continued from left) ├Clg Config ├Htg Config │├System Enable │├OA Heating Lockout Setpoint ││├False ││└Adjustable 0.0 – 130.0° F ││└True │├Discharge Air High Setpoint │├Control Points ││└Adjustable 40.0 – 160.0° F ││├0 (DAT control) │├Discharge Air Low Setpoint ││└1 (ZNT control) ││└Adjustable 40.0 –...
- Page 12 (continued from previous page) (continued from left) ├Fan Setup ├ Circuit 2 Valve Output │├Occupied Fan Mode │├Auto ││├Auto │├Closed ││├Off │└Open ││└On ├ Occupancy Override │├Unoccupied Fan Mode │├Occupied ││├Auto │├UnOccupied ││├Off │├Bypass ││└On │├Standby │├Supply Fan Speed │└Not Set ││└Adjustable 0 –...
- Page 13 CONTROLLER DETAILS ├Firmware └Unit │├Firmware Status ├Device Status │├Firmware Main Version ├Model name │├Equipment Template Version ├Hardware Version │├Equipment Archive Version ├Application Name │└Equipment View Version ├Appl SW Version ├Time ├Equipment Template Version │├Time (not accessible via display) ├Equipment Archive Version │├Date (not accessible via display) ├Equipment View Version │└Time Zone...
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Page 14: Set Schedule
TREND SET SCHEDULE ├Inputs ├Water System Flush │├Effective Discharge Air Temperature └OCC Schedule ││└500 data points at 5 mins interval │├Effective Outdoor Temperature ││└500 data points at 5 mins interval │├Effective Zone Temperature ││└500 data points at 5 mins interval │├Water Meter 1 ││└500 data points at 5 mins interval │├Water Meter 2...