Troubleshooting; Periodic Maintenance; Reviewing Fault Status Of The Drive; Chapter 9 Troubleshooting - Baldor VS1SM Installation & Operating Manual

The VS1PF constantly monitors operating status and provides the following means to determine drive
status and to troubleshoot problems that may occur:
S LEDs on the drive
S Fault Codes displayed on LCD display
S Drive monitor and status parameters
S Entries in the fault queue
9.1

Periodic Maintenance

Check the cooling fan, the fan should be unobstructed and free.
Clean all dirt and debris from the cover and fan (air inlet) area.
9.2

Reviewing Fault Status of the Drive

Display Function
Overcurrent
Ground fault
Overload
Overload trip
Heat sink
overtemp
DC link capacitor
overload
Output Phase
loss
Over voltage
MN761
Table 9‐1 Fault Code Descriptions
Description / Cause.
Output turns off when
output current exceeds
200% of rated current.
Output turns off when
ground current exceeds the
internal value.
Output turns off when
output current exceeds
150% of rated current for 1
minute.
Output turns off when
output current exceeds
150% of rated current for 1
minute.
Output turns off when heat
sink temperature exceeds
its limit.
Output turns off when
Output turns off when one
or more output phases
(U, V, W) is open.
Output turns off when the
DC link voltage exceeds
400 V (during motor
deceleration).
Cause
Accel/Decel too short.
Load exceeds inverter
rating
Inverter started when the
motor is free running.
Output short circuit or
ground fault occurred.
Mechanical brake is
operating too fast.
Ground fault has occurred
or motor insulation is
damaged.
Load exceeds inverter
rating.
Torque boost scale set too
large.
Cooling fan fault.
Poor air circulation.
Ambient temperature too
high.
Faulty output wiring.
Damaged motor.
Decel time is too short.
Regenerative load is
overhauling.
Line voltage is too high.
Chapter 9

Troubleshooting

Remedy
Increase Accel/Decel time
or decrease load.
Resume only after stopping
the motor or use H22
Check output wiring.
Check the mechanical
brake.
Check the output wiring.
Replace the motor.
Decrease load or use
correctly sized inverter.
Reduce torque boost scale.
Replace fan.
Remove air flow restriction.
Ambient must be < 40°C.
Verify output connections
Replace motor.
Increase Decel time.
Use Dynamic Brake Unit.
Reduce line voltage.
Troubleshooting 9-1