Baldor NEMA-4X, Installation And Operation Manual

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9 TROUBLESHOOTING
WARNING! HIGH VOLTAGE IS PRESENT IN THIS DRIVE. DISCONNECT MAIN
POWER BEFORE MAKING CONNECTIONS TO THE DRIVE. THE COVER MUST BE
PROPERLY SECURED, AFTER ALL SETUP CONNECTIONS, AND ADJUSTMENTS ARE
COMPLETE. IT REDUCES ELECTRICAL SHOCK HAZARD. FAILURE TO OBSERVE THIS
WARNING COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCUTION.
WARNING! HIGH VOLTAGE IS PRESENT IN THE DRIVE. IF POSSIBLE, DO NOT
ADJUST TRIMPOTS WITH THE MAIN POWER APPLIED. IF ADJUSTMENTS ARE MADE
WITH THE MAIN POWER APPLIED, AN INSULATED ADJUSTMENT TOOL (PROVIDED)
MUST BE USED AND SAFETY GLASSES MUST BE WORN. FIRE AND/OR
ELECTROCUTION CAN RESULT IF CAUTION IS NOT EXERCISED.
9.1 TROUBLESHOOTING GUIDE: Table 14 provides information on symptoms, possible
causes, and the suggested troubleshooting solutions for the drive.
Important Note: If the tach voltage is connected backwards, the control will drive the
motor at full speed only. If the Forward-Brake-Reverse switch is used, provision must be
made to reverse the polarity of the tachometer leads when the control is switched to
"Reverse."
TABLE 14 – TROUBLESHOOTING GUIDE
Indication / Symptom
Possible Solutions
START-STOP Switch is in the STOP
position. If so, move the START-STOP
Switch to the START position.
The Main Speed Potentiometer is set to zero
speed. Set the Main Speed Potentiometer for
the desired speed.
Motor is not running or,
STOP LED indicator is illuminated.
The Main Speed Potentiometer, signal input,
or motor connections are open. Verify Main
Speed Potentiometer, signal input, or motor
connections.
Motor runs then stops after a short time or,
The Drive Trips due to overload (TCL Fault).
The drive must be manually restarted by
disconnecting and reconnecting the AC
power. Reduce load.
Line fuse blows or circuit breaker trips.
The line fuse or circuit breaker installed is
the incorrect rating. See Table 5, on page
7, for the correct line fuse or circuit breaker
rating.
Continued on the following page.