Baldor 18H Series Installation & Operating Manual page 96

Section 1
General Information
INDICATION
Power Module Power supply failure.
PWR Base FLT Improper ground
Excessive current usage.
Encoder coupling slipping, broken
or misaligned.
Encoder bearing failure.
Excessive noise on encoder lines.
Electrical noise from external DC
coils.
Electrical noise from external AC
coils.
Excessive load.
Excessive power in dynamic brake
circuit.
Regen R PWR Incorrect dynamic brake parameter.
FLT
Regen power exceeded dynamic
brake resistor rating.
Input voltage too high.
Resolver Loss Resolver defect.
Torque Prove FLT Unbalanced current in 3 motor
phases.
Unknown Fault Fault occurred but cleared before its
source could be identified.
User Fault Text Fault detected by custom software.
MN718
Table 5-2 Troubleshooting
POSSIBLE CAUSE
Continued
CORRECTIVE ACTION
Press "RESET" key on keypad. If fault remains, call Baldor.
Be sure control has separate ground wire to earth ground.
Panel grounding or conduit connections is not sufficient.
Disconnect motor leads from control and retry test. If fault remains, call
Baldor.
Correct or replace encoder to motor coupling.
Replace and align encoder.
Check encoder connections.
Separate encoder leads from power wiring.
Cross encoder wires and power leads at 90 .
Electrically isolate encoder from motor.
Install optional Isolated Encoder Feedback expansion board.
Install reverse biased diodes across all external DC relay coils as shown in
the Opto Output circuit examples of this manual. See Electrical Noise
Considerations in Section 7 of this manual.
Install RC snubbers on all external AC coils. See Electrical Noise
Considerations in Section 7 of this manual.
Correct motor load.
Verify proper sizing of control and motor.
Verify proper Ohm and Watt parameters of DC Injection Braking.
Increase decel time.
Add optional dynamic braking hardware.
Check Resistor Ohms and Resistor Watts parameters in the Level 2 Brake
Adjust block.
Add optional dynamic braking hardware.
Verify proper AC line voltage.
Use step down transformer if needed.
Use line reactor to minimize spikes.
Check resolver to motor coupling (align or replace if needed).
Verify correct wiring. Refer to the Resolver to Digital
expansion board manual.
Electrically isolate resolver from motor.
Check continuity from control to motor windings and verify motor
connections.
Check AC line for high frequency noise.
Check input switch connections and switching noise.
Refer to custom software fault list.
Troubleshooting 5-9