YASKAWA FSDrive-MV1000 Instructions Manual page 123

Digital Operator Display
Err
Cause
Noise has corrupted data while writing to the
EEPROM.
Hardware problem.
Digital Operator Display
FAn
Cause
Cooling fan fault
Digital Operator Display
FbH
Cause
Parameters are not set appropriately.
Wiring for PID feedback is incorrect.
There is a problem with the feedback sensor.
Digital Operator Display
FbL
Cause
Parameters are not set appropriately.
Wiring for PID feedback is incorrect.
There is a problem with the feedback sensor.
Digital Operator Display
GF
Cause
The motor has been damaged due to
overheating or the motor insulation is
damaged.
One of the motor cables has shorted out or
there is a grounding problem.
Large stray capacitance of cable and
terminal.
Hardware problem.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
EEPROM Write Error
Data cannot be written to the EEPROM.
⇒Press the
button.
⇒Correct the parameter setting.
⇒Cycle control power to the drive. Refer to
page 150.
⇒Replace the control board. For instructions on replacing it, contact Yaskawa or your
nearest sales representative.
Fan Fault
Fault of the cooling fan or MC power supply
Cycle control power to the drive and see if the fault reoccurs.
Check if the cooling fan is working.
⇒If the cooling fan has reached the end of its service life or if it has a fault, replace it by
following the instructions in this manual.
Excessive PID Feedback
PID feedback loss detection is programmed to trigger a fault (b5-12 = 2, 5), and the PID
feedback input is greater than the level set b5-36 for longer than the time set to b5-37.
⇒Check the settings of parameters b5-36 and b5-37.
Check for faulty wiring.
⇒Correct the wiring.
Check the sensor on the controller side.
⇒If damaged, replace the sensor.
PID Feedback Loss
PID feedback loss detection is programmed to trigger a fault (b5-12 = 2) and the PID
feedback input is below the detection level set to b5-13 for longer than the time set to b5-
14.
⇒Check the settings of parameters b5-13 and b5-14.
Check for faulty wiring.
⇒Correct the wiring.
Check the sensor on the controller side.
⇒If damaged, replace the sensor.
Ground Fault
A current short to ground exceeded 50% of rated current on the output side of the drive.
(Setting L8-09 to 1, enables ground fault detection.)
Check the insulation resistance of the motor.
⇒Replace the motor.
Check the motor cable.
⇒Remove the short circuit and turn the power back on.
Check the resistance between the motor cables and the ground terminal
⇒Replace the cable.
⇒If the cable length exceeds 100 m, decrease the carrier frequency.
⇒Reduce the amount of stray capacitance.
⇒Replace the control board. For instructions on replacing it, contact Yaskawa or your
nearest sales representative.
Fault Name
Possible Solution
Diagnosing and Resetting Faults on
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
5.4 Fault Detection
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