Hardware Reference, Installation and Troubleshooting Owner manual

Troubleshooting/Diagnostics
4-3
4.6 Fault and Alarm Messages, Descriptions and Code Numbers
Table 4.1 lists all possible OIM error messages generated by the drive and fault/alarm codes.
The error messages appear on the OIM display when certain drive conditions exist. Table 4-1 lists fault
codes and Table 4-2 lists alarm codes. Tables 4.1 and 4.2 list fault and alarm codes by number (Fxxxxx
= Fault; Axxxxx = Alarm), associated message visible at the OIM display and a description along with
possible causes.
Table 4.1 - Fault Codes
CODE DISPLAY DESCRIPTION
F00001 IET
(OVERCURRENT)
Armature current instantaneously exceeded 180% of MAXIMUM
CURRENT
.
Possible causes:
• Incorrect armature current feedback scaling
(MOTOR RATED ARM
AMPS, MAXIMUM CURRENT, CT TURNS RATIO
or J18 not set
properly).
• One or more thyristors not operating.
• Improper Current Minor Loop tuning.
• Motor armature winding damaged.
F00002 TACHOMETER
LOSS
Tachometer or encoder feedback signal missing.
Possible causes:
• Tachometer or encoder coupling failure.
• Disconnected, loosely connected, or damaged tachometer or
encoder wires.
• Pulse encoder supply voltage low.
• Incorrect analog tachometer scaling.
• Incorrect pulse encoder configuration.
• Motor armature winding not connected or open circuit.
• Blown inverting fault (DC) fuse.
• Inverting fault breaker tripped.
• Tachometer or encoder failure.
• High inertia loads and high inductance armature circuits. To reduce
nuisance faults, increase the firing angle threshold (see section 4.7)..
F00003 OVERSPEED Motor speed exceeded the 110% of GEAR IN SPEED.
Possible causes:
• Incorrect tachometer or encoder scaling.
• Blown field supply fuse(s).
• Improper speed loop tuning.
• Incorrect pulse encoder wiring.
F00004 FIELD CURRENT
LOSS
Field Current Regulator kit field supply:
FIELD FEEDBACK
(P.589) fell
below the
FIELD LOSS THRESHOLD
(P.512).
Possible causes:
• Motor field winding not connected or open circuit.
• Blown field supply fuse(s).
• Blown AC line fuse(s).
• Field supply failure.
• Disconnected, loosely connected or damaged wiring harness.
• Improper field loop tuning.