Table 86: Run messages
Message Description
VSD – INPUT
PULLDOWN LIMIT
The chiller input current will be limited by the pulldown demand limit
setpoint. The message clears when the pulldown demand time expires.
SYSTEM RUN - ACTIVE
OPTIMIZER
The chiller is running, and the Optimizer is Active.
SYSTEM RUN -
PASSIVE OPTIMIZER
The chiller is running, and the Optimizer is Passive.
SYSTEM RUN -
COOLING
The chiller is running, Heat Pump is Enabled and Control Mode is
Cooling, Optimizer is OFF.
SYSTEM RUN -
HEATING
The chiller is running, Heat Pump is Enabled and Control Mode is
Heating.
SYSTEM RUN -
COOLING and HEATING
The chiller is running, Heat Pump is Enabled, Control Mode is Cooling,
and Heating.
Table 87: MBC startup messages
Message Description
WAITING FOR FLOW
The chilled liquid or condenser flow switch input is not reading voltage
indicating no presence of flow from the flow switch. Indication of flow
is required during the MBC Startup state to allow transition to chiller
run.
WAITING FOR MBC
LEVITATION
The OptiView has issued a MBC Levitate command to the MBC and is
waiting for confirmation from the MBC that De-levitated mode is OFF,
Levitated mode is ON, and the input from the digital Rotation Allowed
contacts on the MBC is high at OptiView
™
I/O board terminal TB3-30.
This message precedes “Waiting for Chilled Liquid Flow”.
WAITING FOR VSD
PREREGULATION
The OptiView has issued a VSD Pre-Charge/Pre-Regulate command
to the VSD and is waiting for confirmation from the VSD that it has
achieved regulated DC Bus voltage and is awaiting a run command.
This message precedes “Waiting for MBC Levitation”.
Table 88: Start inhibit messages
Message Description
LINE FREQUENCY NOT
SET
This start inhibit is set when the Line Frequency setpoint is “INVALID”.
Line Frequency is set invalid on a new or cleared BRAM until
programmed.
LINE VOLTAGE NOT SET
This start inhibit is set when the Line Voltage setpoint is “INVALID”.
Line Voltage is set invalid on a new or cleared BRAM until
programmed.
VGD STROKE NOT
CALIBRATED
The Variable Geometry Diffuser stroke calibration procedure has NOT
yet been performed.
VGD FEEDBACK NOT
CALIBRATED
The Variable Geometry Diffuser feedback calibration has not yet been
performed since last stroke calibration.
MBC - INITIALIZATION
FAILURE
OptiView was unable to read a valid validation key code over serial
communications from the MBC after prompted by voltage present on
the MBC Alive contacts (I/O board TB3-71).
109
YMC
2
Mod B with OptiView
™
Control Center
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