Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 137)

Troubleshooting the FlexPak 3000 Drive 13-5
F00014 REVERSED TACH
LEADS
The difference between the speed reference and speed feedback was
greater than
TACH LEAD FLT THRESH (P.227) for the time specified in TACH
LEAD FLT DELAY (P.228).
Possible causes:
• Tachometer or encoder leads are reversed.
• The motor armature leads are reversed.
• The motor field leads are reversed.
• There is an overhauling load.
• The drive was not tuned properly.
F00015 INVERTING FAULT
AVOIDED
The inverting fault avoidance logic has detected conditions that could have
caused an inverting fault. The drive took action to avoid an actual inverting
fault. See section 13.7, Setting Up Inverting Fault Avoidance, for more
information on this fault.
F00016 PHASE LOSS The measured AC line voltage fell below 75% of the value specified by
NOMINAL AC LINE VOLTS (P.307).
F00030 to
F00041 SCR #n NOT
OPERATING
“n” is the number of the SCR that is not operating. n = 1-6, 11-16.
Possible causes:
• Disconnected, loosely connected or damaged thyristor gating circuit.
• Improper current minor loop tuning.
• Improper speed/voltage loop tuning.
• Failed thyristor.
F00042 MULTIPLE SCRS NOT
OPERATING
One or more thyristor ( SCR ) is not carrying an equal load.
Possible causes:
• Disconnected, loosely connected or damaged thyristor gating circuit.
• Blown AC line fuse(s).
• Improper current minor loop tuning.
• Improper speed/voltage loop tuning.
• Failed thyristor.
Table 13.1 – Fault Codes (Continued)
Code OIM Display Description