- General Electric Computer Accessories User Manual

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• Chapter 2 Faults and Troubleshooting Innovation Series Medium Voltage GP Type - G Drives GEH-6385
No. Name Type Description
138 AC line vfb offset Trip
The AC line vfb offset trip fault occurs when the voltage feedback offset being
calculated for line voltage feedbacks is above the allowable threshold. The
system integrates the voltages seen on the AC input terminals. The results of
this integration should be near zero since the input waveform is a sine wave.
If the input line-line voltages integrate to a non-zero value above a predefined
threshold this trip fault is generated.
Primary causes:
Bad VCO Circuit.
Incorrect sensor wiring.
Large DC current component through transformer.
Possible board failures:
VATF-SRC
FOSA
BICM
DSPX
Possible wiring faults:
Check wiring of VATF-SRC sensor inputs to phase leg.
139 AC line failed Trip
The AC line failed trip fault occurs when the phase lock loop fails to
synchronize during the start up sequence.
Primary causes:
The AC line is missing.
There is a large AC line imbalance.
There is a blown fuse.
140 Xfrmr over temp Trip
The Xfrmr over temp trip occurs when the transformer over temperature circuit
is open. The control input which points to the over temperature circuit is
selected by parameter Xfrmr OT fault sel.
Xfrmr over temp can be disabled by setting parameter Xfrmr OT fault sel equal
to Unused.
141 Xfrmr temp hot Alarm The Xfrmr temp hot alarm occurs when the transformer over temperature
circuit is open. The control input which points to the over temperature circuit is
selected by parameter Xfrmr OT fault sel.
Xfrmr temp hot can be disabled by setting parameter Xfrmr OT fault sel equal
to Unused.
142 Motor over temp Trip
The Motor over temp trip fault occurs when the motor overtemperature circuit
is open. The state of the motor overtemperature circuit is selected by
parameter Motor OT fault sel.
Motor over temp can be disabled by setting parameter Motor OT fault sel
equal to Unused.
Related functions:
Motor Overtemperature Detection
143 Motor temp hot Alarm
The Motor temp hot trip fault occurs when the motor overtemperature circuit is
open. The state of the motor overtemperature circuit is selected by parameter
Motor OT fault sel.
Motor temp hot can be disabled by setting parameter Motor OT fault sel equal
to Unused.
Related functions:
Motor Overtemperature Detection
144 Unrecognized IPN Trip
The Unrecognized IPN trip fault occurs when the specified Intelligent Part
Number (IPN) is not a valid combination of fields for the Innovation Series
product. The IPN should correspond to the drive nameplate.
Unrecognized IPN requires a hard reset to clear.