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Figure 21. BMS communication Setup screen
Feature
BMS Online Status
BMS Protocol
BMS Offline Delay
BACnet MAC Addr
BACnet Instance Num
BACnet License
BACnet License
Baudrate
Parity
Stop Bits
HMI Comm Status
HMI Comm Errors count
HMI Comm Errors reset
Operator Tasks
Before operating the unit, confirm all compressor
refrigeration service valves are fully back-seated
counterclockwise.
ARTC-SVX009A-EN
Description
Indicates whether BMS is communicating to chiller bank or not.
Allows to select BMS communication type. The options are:
•
None – BMS communication disabled
•
BACnet® – BACnet MSTP or BACnet® IP BMS communication used
•
Modbus/Lon – Modbus RTU, Modbus IP or LonWorks® BMS communication used
Note: BACnet IP, Modbus IP or LonWorks require a use of external router/gateway to implement
communication channel.
If BMS is not communicating to chiller bank for longer than this delay, BMS communication alarm is
raised. If setting = 0, BMS communication alarm is disabled.
Chiller BACnet MAC address for BACnet MSTP BMS communication.
Chiller BACnet Instance Number for BACnet MSTP or BACnet IP BMS communication.
Indicates if BACnet license has been activated on the chiller.
Indicates if BACnet license has been activated on the chiller.
Note: BACnet license has to be activated on chiller bank Primary PLC in order to enable BACnet IP
or BACnet MSTP BMS communication.
BMS communication speed in bits/second.
BMS communication frames parity. The options are:
•
None
•
Odd
•
Even
Number of BMS communication frames stop bits: 1 or 2.
No Errors – HMI communicating to module PLCs with no errors; Comm Error – at least a single
communication error occurred.
Number of occurred HMI communication errors.
Resets number of communication errors to '0'.
Compressor Failure!
Failure to properly back-seat rotalock valves can
cause compressor failure.
Verify the circuit breakers on the module electrical
panel are turned to OFF position prior to applying
power.
Operating Procedures
NOTICE
41
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