User manual

148
8 - TROUBLESHOOTING & MAINTENANCE
11 Ground Ground fault 0
The drive has detected current
ow to ground
- Check for grounded motor leads or motor
- Verify proper wiring and grounding
- Consult factory
- Replace motor
12 Vac Imblnce
Input voltage
imbalance
0
The drive has detected a
single-phase condition or a
voltage imbalance outside the
drive’s rating that could be dam-
aging to the drive
- Check input voltage and current
for imbalance, and correct
13 OverVoltage
Overvoltage
condition
0
The drive has detected an
overvoltage condition during a
running condition
- Verify incoming line power is within
specication.
1, 3
The drive has detected an
overvoltage condition during a
running condition
- Increase decel time
- Verify incoming line power and check for
regenerative load.
- Reduce Regen load or add dynamic braking
resistors.
Regen Current Limit may help
- Consult factory
2
The drive has detected an
overvoltage condition on
power-up
- Verify incoming line power is
within specication. Add reactor
or transformer to correct
15 Dyn Brake
Dynamic
brake
overload
0
The DB circuit is active on
power-up (not auto-resettable)
- Check for failed braking
transistor
- Consult factory
1
The DB circuit is being activated
for too long, possibly causing the
resistor to overheat or fail
- Reduce braking cycle ora Add external DB
resistor.
- Activate current limit
- Consult factory
2
The DB circuit is overloaded
because of too large a
regenerative load
- Reduce braking cycle ora Add external DB
resistor.
- Activate current limit
- Consult factory
3, 4, 5
The DB circuit is faulty on
power-up (not auto-resettable)
18 Over Current
Overcurrent
condition
0
The drive sensed an overcurrent
condition on power-up (not
auto-resettable)
- Check for failed output power device or
shorted motor
1
The drive sensed an overcurrent
condition during operation. The
current has exceeded the safe
operation point of power devices
- Operate after motor has completely stopped.
- Verify output wiring.
- Check mechanical brake operation.
- Reduce load on motor.
- Verify Motor FLA
- Increase Accel time.
- Check cooling fan
- Check for mechanical binding/shock loading
19 Over Temp
Over
temperature
condition
0
The temperature of the heatsink
exceeded a temperature limit
- Check that ambient temperature does not
exceed drive’s rating
- Check for fan operation and replace if
required. (drives with fans installed)
- Verify ambient temperature is below 40C
1
The temperature of the control
board exceeded a temperature
limit
- Check that ambient temperature
does not exceed drive’s rating
- Check for fan operation
(assuming drive has fans
installed)
2
The drive sensed the heatsink
thermistor sensor is faulty or not
connected properly
- Check thermistor connections
or replace
- Consult factory
3
The drive sensed the control
board thermistor sensor is faulty
or not connected properly
Check thermistor connections or
replace
- Consult factory