11.10 Drive Faults and Alarms Tamper Resistant Input Protection Related
Handling Tamper Resistant Input Protection Related Faults
Table 11-9 Tamper Resistant Input Protection related faults
Fault display Type Enable Potential causes and corrective actions
Input Breaker Required F Fixed Cause
If the drive has the "Drive has input breaker" menu parameter set to "no"
and an input breaker is required for the cell type in the drive then this fault
is issued.
Action
Change the "Drive has input breaker" menu parameter to "yes" and make
sure drive has input breaker.
Handling Synchronous Transfer Related Faults
Table 11-10 Synch transfer related faults
Fault display Type Enable Potential causes and corrective actions
Up transfer failed A SOP Cause
Time-out has occurred from request to up synch transfer complete.
Action
1. Check input line for voltage and distortion.
2. Check status of InsufficientOutputVolts_O ag or the output
voltage versus safe voltage to see if transfer is prohibited.
3. Increase menu setting, or set to zero to disable time out.
Down transfer failed A SOP Cause
Time-out has occurred from request to down synch transfer
Action
1. Check feedback voltage waveform.
2. Check status of InsufficientOutputVolts_O ag or the output
voltage versus safe voltage to see if transfer is prohibited.
3. Increase menu setting, or set to zero to disable time out.
Phase sequence F/A SOP Cause
Sign of input frequency and operating frequency are opposite. This will
prohibit a transfer but is not fatal for normal operation. This fault needs to
be enabled via the system program ags for transfer operations.
Action
Swap one pair of motor leads and change sign of speed command if nee‐
ded.
Troubleshooting Faults and Alarms
11.10 Drive Faults and Alarms Tamper Resistant Input Protection Related
NXGPro+ Control Manual
Operating Manual, A5E50491925A 463
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