Chapter 6
Troubleshooting
6–17
Velocity Processor Faults & Warnings – You can configure which
velocity processor faults you want to trip the drive by setting Parameter 88
(Figure 6.5). When there is a velocity processor fault, the VP light on the
Main Control board will blink red (soft fault) for configurable VP faults.
When this happens, the drive will shut off and coast the motor to a stop.
VP faults can be viewed in parameter 83 (Figure 6.6). Configurable VP
warnings can be setup in Parameter 89 (Figure 6.7) and viewed in
parameter 85. When a configurable VP warning exists, the VP light will
be flashing green, but the drive will continue to run. Velocity processor
warning faults can be viewed in parameter 85 (Figure 6.8).
Figure 6.5
Parameter 88 (VP Fault/Warning Configuration Select (bits))
Feedback Loss
Inverter Overtemp Pending
Motor Overtemperature Tripped
Motor Overload Pending – IIT
Motor Overload Trip – IIT
Motor Stalled
External Fault
RMS Fault
NOT USED
Parameter Limit
Math Limit
Dynamic Brake Resistor Overtemperature
AC Motor Contactor Failure
Inverter Overload Pending (IT)
Drive–to–Drive communication fault
Inverter Overload Trip (IT)
O O O O O O O O. O O O O O O O O
Bit#
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
This word parameter indicates conditions detected by the Velocity Processor (VP) that have been configured to report as
a Drive warning condition. Each configuration bit matches the bit definitions of Parameters 83, 85 and 89. When a bit is
set to “1”, the corresponding condition in the Drive will be reported as a FAULT, otherwise the condition is reported as a
WARNING.
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