Troubleshooting Guide - Baldor SERIES 5 Installation And Operation Manual

Symptom
Line fuse blows or
circuit breaker trips.
Motor does not run.
Motor runs then stops after
a short time.
TABLE 12 - TROUBLESHOOTING GUIDE
Possible Cause
The line fuse or circuit breaker
installed is the incorrect rating.
Drive or Motor Failure.
On/Off AC Line Switch is in the
OFF position.
The Main Speed Potentiometer
is set to zero speed.
The Main Speed Potentiometer,
signal input, or motor connection
are open.
The Forward-Stop-Reverse
Switch (when installed) is set to
the "STOP" position.
The motor may be overloaded.
The Drive Trips due to overload
2
(I t Fault).
The Acceleration setting may
be too fast.
Overvoltage Fault
Short circuit Fault.
Suggested Solution
See Table 7, on page 6, for the
correct line fuse
breaker rating.
Check and replace defective
part.
Set the On/Off AC Line Switch
to the ON position.
Set the Main
Potentiometer for the desired
speed.
Verify Main
Potentiometer, signal input, or
motor connections.
Set the Forward-Stop-Reverse
Switch to the "FORWARD" or
"REVERSE" position.
Check the motor current with an
AC RMS responding ammeter.
Reduce load.
The CL setting may need to be
increased. See Section 7.6, on
page 23.
Verify Motor
Jumper, J2 is set correctly. See
Section 6.2, on page 19.
The drive must be manually
restarted by either
following methods:
Disconnect and reconnect the
AC power (the "ST" LED must
change from quick flashing red
to flashing red/yellow).
the Main Speed Potentiometer
to zero (fully counterclockwise).
3. Open and close the Forward-
Stop-Reverse Switch
contact) or Run Switch (or
contact). See Section 6.3, on
page 19. Reduce load.
Reduce the ACCEL
setting, as described in Section
7.3, on page 22.
Rapid Deceleration
Verify drive setting. See Section
7.4, on page 22.
Verify motor condition.
or circuit
Speed
Speed
Horsepower
of the
1.
2. Set
(or
Trimpot
change.
27