Baldor 15H SERIES 15H Installation & Operating Manual page 80

Section 1
General Information
INDICATION
HW Desaturation Accel/Decel rate set too short.
Torque Boost set too high.
Electrical noise in logic circuits.
Motor overloaded.
HW Power Power supply malfunctioned.
Supply
HW Ground Fault Output current (motor current)
leakage to ground.
Invalid Base ID Control does not recognize hp and
Voltage configuration.
Line REGEN Fault in Line REGEN Converter
Motor Will Not Not enough starting torque.
Start
Motor overloaded.
Motor may be commanded to run
below minimum frequency setting.
Incorrect Command Select
parameter.
Incorrect frequency command.
Motor Will Not Max Frequency Limit set too low.
Reach Maximum
Motor overloaded.
Speed
Improper speed command.
Speed potentiometer failure.
Motor Will Not MIN Output Speed parameter set
Stop Rotation too high.
Improper speed command.
Speed potentiometer failure.
Motor runs rough Torque boost set too high.
at low speed
Misalignment of coupling.
Faulty motor.
MN715
Table 5-3 Troubleshooting
POSSIBLE CAUSE
Continued
CORRECTIVE ACTION
Lengthen Accel/Decel rate.
Reduce torque boost value.
Check for proper grounding of power wiring and shielding of signal wiring.
Verify proper sizing of control and motor or reduce motor load.
Check internal connections.
Replace logic power board.
Disconnect wiring between control and motor. Retry test.
If GND FLT is cleared, reconnect motor leads and retry the test. Repair
motor if internally shorted.
Replace motor lead wire with low capacitance cable.
If GND FLT remains, contact Baldor.
Press "RESET" key on keypad. If fault remains access "Diagnostic Info"
and compare reported ID number with Table 5-2. If different, call Baldor.
Series 21H Line REGEN Inverter only.
Increase Current Limit setting.
Check for proper motor loading.
Check couplings for binding.
Verify proper sizing of control and motor.
Increase speed command or lower minimum frequency setting.
Change Command Select parameter to match wiring at J4.
Verify control is receiving proper command signal at J4.
Adjust Max Frequency Limit parameter value.
Check for mechanical overload. If unloaded motor shaft does not rotate
freely, check motor bearings.
Verify control is receiving proper command signal at input terminals.
Verify control is set to proper operating mode to receive your speed
command.
Replace potentiometer.
Adjust MIN Output Speed parameter value.
Verify control is receiving proper command signal at input terminals.
Verify control is set to receive your speed command.
Replace potentiometer.
Adjust torque boost parameter value.
Check motor/load coupling alignment.
Replace with a Baldor Motor.
Troubleshooting 5-7