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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
Lack of input voltage Verify correct input voltage
No Display
Loose connections Check input power connections
Not enough starting
torque
Increase torque boost setting
Motor Will
Verify proper motor and control
rating
Not Start
Motor overloaded
Verify 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 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 Verify control is receiving proper
command signals at the control
terminal strip
Verify control is set to receive your
type of speed command
Speed potentiometer
failure
Replace potentiometer