Baldor 22H series Installation & Operating Manual page 93

Section 1
General Information
Table 5-4 Power Output Section Troubleshooting
INDICATION
External Trip Motor ventilation insufficient.
Motor draws excessive current.
No thermostat connected.
Poor thermostat connections.
External trip parameter incorrect.
Following ERR Speed proportional gain set too low. Following error tolerance band set too narrow.
Current limit set too low.
ACCEL/DECEL time too short.
Excessive load.
GND FLT Improper wiring.
Wiring shorted in conduit.
Motor winding shorted.
INT Over-Temp Motor Overloaded.
Ambient temperature too high.
Invalid Base ID Control does not recognize HP and
Voltage configuration.
Inverter Base ID Power base with no output phase
current sensors being used.
Logic Supply FLT Power supply malfunctioned.
Lost User Data Battery backed memory failure.
Low INIT Bus V Improper AC line voltage.
Memory Error EEPROM memory fault occurred.
P Reset Power was cycled before Bus
voltage reached 0VDC.
5-10 Troubleshooting
POSSIBLE CAUSE
Continued on next page.
CORRECTIVE ACTION
Clean motor air intake and exhaust.
Check external blower for operation.
Verify motor's internal fan is coupled securely.
Verify correct line power to external blower.
Check motor for overloading.
Verify proper sizing of control and motor.
Connect thermostat.
Verify connection of all external trip circuits used with thermostat.
Disable thermostat input at J1-16 (External Trip Input).
Check thermostat connections.
Verify connection of external trip circuit at J1-16.
Set external trip parameter to "OFF" if no connection made
at J1-16.
Increase Speed PROP Gain parameter value.
Increase Current Limit parameter value.
Increase ACCEL/DECEL parameter time
Verify proper sizing of control and motor.
Disconnect wiring between control and motor. Retry test.
If GND FLT is cleared, reconnect motor leads and retry the test.
Rewire as necessary.
Repair motor.
If GND FLT remains, contact Baldor.
Correct motor loading.
Verify proper sizing of control and motor.
Check that air flow path is clean and free of debris.
Relocate control to cooler operating area.
Add cooling fans or air conditioner to control cabinet.
Press "RESET" key on keypad. If fault remains, access diagnostic info
and compare power output section Power Base ID # with Table 5-5. If
different, contact Baldor.
Replace power base with one that has output leg current
feedback. Contact Baldor.
Replace logic power supply.
Parameter data was erased. Disconnect power to control and
apply power (cycle power). Enter all parameters.
Cycle power. If problem persists, contact Baldor.
Check input AC voltage level.
Press "RESET" key on keypad. If fault remains, call Baldor.
Press "RESET" key on keypad.
Disconnect power and allow at least 5 minutes for
Bus capacitors to discharge before applying power.
If fault remains, call Baldor.
Continued
MN722