Variable Speed Drive (Vsd) Details Screen - Johnson Controls YORK YVAM 0350 Operation & Maintenance Manual

Variable speed drive (VSD) details screen

Figure 24: Variable speed drive (VSD) details screen
This screen displays more detailed parameters associated with the variable speed drive. This screen
also provides a means for a service technician to access setpoints or control the DC Bus manually
for maintenance or service.
Table 38: Display only fields
Field/LED name
Motor Run (LED)
DC Bus Regulating (LED)
Precharge Complete (LED)
Input Current Limit (LED)
Cooling System (LED)
Precharge Active (LED)
Output Current Rating
Phase Rotation
DC Bus Voltage
Input kVA
VSD Command
YVAM Control Center
Description
Indicates the digital output from the controls is commanding the motor to RUN.
Indicates the variable speed drive is regulating the DC Bus.
Indicates the drive DC Bus has been pre-charged.
Indicates the chiller input current is at the Job FLA limit.
Indicates the relay controlling the drive water pump output is energized.
Indicates the variable speed drive is pre-charging the DC Bus.
Indicates the variable speed drive size reported from variable speed drive.
Displays the phase rotation sequencing.
Displays the DC Bus voltage.
Displays the total kilovolt-Amps measured by the variable speed drive.
The command from OptiView™ control to the variable speed drive. Commands are as
follows:
• 1 = Pre-Regulate
• 2 = Run
• 3 = Manual Precharge
• 4 = Manual Pre-Regulate
• 5 = Soft Shutdown
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