Baldor SERIES 5, Installation And Operation Manual

Page: 27 / 32

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