YASKAWA V1000 Series Installation & Start-Up Manual page 193

Cause
Parameters are not set appropriately. Check the settings of parameters b5-36 and b5-37.
Wiring for PID feedback is
incorrect.
There is a problem with the
feedback sensor.
LED Operator Display
Cause
Parameters are not set appropriately. Check the settings of parameters b5-13 and b5-14.
Wiring for PID feedback is
incorrect.
There is a problem with the
feedback sensor.
LED Operator Display
Cause
Motor insulation is damaged.
A damaged motor cable is creating a
short circuit.
The leakage current at the drive
output is too high.
The drive started to run during
Current Offset Fault or while
coasting to a stop.
Hardware problem.
LED Operator Display
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Correct the wiring.
• Check the sensor on the control side.
• Replace the sensor if damaged.
PID Feedback Loss
This fault occurs when PID Feedback Loss Detection is programmed to fault
FbL
(b5-12 = 2) and the PID Feedback < PID Feedback Loss Detection Level
(b5-13) for the PID Feedback Loss Detection Time (b5-14).
Correct the wiring.
Check the sensor on the controller side.
If damaged, replace the sensor.
Ground Fault
• Current shorted to ground exceeded 50% of rated current on output side of the
GF
drive.
• Setting L8-09 to 1 enables ground fault detection in models 5.5 kW or larger.
• 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 cable and the ground terminal
• Replace the cable.
• Reduce the carrier frequency.
• Reduce the amount of stray capacitance.
• The value set exceeds the allowable setting range while the drive
automatically adjusts the current offset (this happens only attempting to
restart a PM motor that is coasting to stop).
• Enable Speed Search at start (b3-01 = 1).
• Perform Speed Search 1 or 2 (H1-xx = 61 or 62) via one of the external
terminals. Note: Speed Search 1 and 2 are the same when using PM OLV.
• Replace the drive.
Output Phase Loss
LF
• Phase loss on the output side of the drive.
• Phase Loss Detection is enabled when L8-07 is set to "1" or "2".
5.4 Fault Detection
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
5
.
193