Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 153)

Troubleshooting the FlexPak 3000 Drive 13-21
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Table 13.3 – Inverting Fault Avoidance Settings
Parameter Setting
Is Drive
Regenerating
or Attempting
to Regenerate? Drive Action
DISABLED n/a None.
FAULT IMMEDIATELY Yes • Immediately stops (coast/DB).
• Generates an INVERTING FAULT AVOIDED fault (F00015).
No (drive is
motoring)
• Generates an INVERTING FAULT AVOIDED alarm (A00005).
• Continues normal operation on the motoring bridge until a
request to regenerate is detected.
A request to regenerate occurs when the current minor loop
reference and feedback become opposite polarity. When a request
to regenerate is detected, the drive immediately stops (coast/DB)
and generates an
INVERTING FAULT AVOIDED fault (F00015).
DELAY BEFORE FAULT Yes • Immediately forces the current minor loop reference to zero.
• Logs an INVERTING FAULT AVOIDED alarm (A00005).
• Continues operate normally for up to two seconds. The drive can
generate a motoring current as needed but will coast while a
demand for regenerative current exists.
• If the demand for regenerative current persists for approximately
two seconds, the drive:
• Stops (coast/DB).
• Generates an INVERTING FAULT AVOIDED fault (F00015).
• If the conditions that caused the alarm return to normal before
two seconds, the drive returns to normal operation (the
regenerative bridge is re-enabled) without stopping.
No (drive is
motoring)
• Logs an INVERTING FAULT AVOIDED alarm.
• Continues normal operation on the motoring bridge until a
request to regenerate is detected.
• When a request to regenerate is detected, the drive continues
operate normally for up to two seconds. The drive can generate a
motoring current as needed but will coast while a demand for
regenerative current exists.
• If the demand for regenerative current persists for approximately
two seconds, the drive:
• Stops (coast/DB).
• Generates an INVERTING FAULT AVOIDED fault (F00015).
• If the conditions that caused the alarm return to normal before
two seconds, the drive returns to normal operation (the
regenerative bridge is re-enabled) without stopping.