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Troubleshooting
4-3
Maintenance
The BALDOR Series 10 inverters require very little maintenance,
if any, and should provide years of trouble free operation when
installed and applied correctly. Occasional visual inspection
should be considered to insure tight wiring connections and to
avoid the build up of any dust, dirt, or foreign debris. The control
should be physically located in such a manner as to protect the
internal circuits and associated external wiring from any
accumulation of moisture or other types of liquid contaminants.
Before attempting to service this equipment, all input power
should be removed from the inverter to avoid the possibility of
electrical shock. The servicing of this equipment should be
handled by a qualified electrical service technician experienced
in the area of high power electronics.
Troubleshooting
Indication Possible
Cause
Corrective Action
No Dis
p
lay
Lack of input voltage
V
erify correct input voltage
N
o
Di
sp
l
ay
Loose connections Check input power connections
Not enough starting
torque
Increase torque boost setting
Motor Will
Not Start
V
erify proper motor and control
rating
N
ot
S
tart
Motor overloaded
V
erify couplings are not binding
Motor
overloaded
Install a motor and control with
higher ratings
Max. Output Frequency
Limit set too low
Adjust setting of Max. Output
Frequency Limit
Motor does
Motor overloaded
Check for mechanical overload. If
unloaded motor shaft does not
rotate freely
, check motor bearings
Motor does
not reach
max speed
Improper speed command
V
erify control is receiving proper
command signals at the control
terminal strip
V
erify control is set to receive your
type of speed command
Speed potentiometer
failure
Replace potentiometer