Yaskawa Junma Series SERVOPACK - Manual (Page 75)

6.1 Alarm Indicator Lights
E-74
6 Troubleshooting
If the servomotor does not operate correctly due to setting failures, wiring faults, or other problems, refer to this sec-
tion and take corrective actions. Contact your Yaskawa representative if the problem cannot be solved by the correc-
tive actions described here.
When taking a corrective action, turn OFF the power, remove the cause of the alarm, and then turn
ON the power again.
6.1 Alarm Indicator Lights
Alarm
Display
Alarm
Name
Conditions at
Alarm Occur-
rence
Cause Corrective Action
Speed
error Power was
turned ON. A SERVOPACK fault occurred. Replace the SERVOPACK.
Servo was
turned ON. Phases U, V, and W in the ser-
vomotor are wired to the wrong
terminals. Correct the servomotor wiring.
The encoder wiring is incorrect.
Malfunction occurred due to
noise interference in the
encoder wiring. Take measures against noise
for the encoder wiring.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Servomotor
operation was
started or was
switched to
high-speed
operation. Phases U, V, and W in the ser-
vomotor are wired to the wrong
terminals. Check and correct the servomo-
tor wiring.
The encoder wiring is incorrect.
Malfunction occurred due to
noise interference in the
encoder wiring. Take measures against noise
for the encoder wiring.
The position reference is too
large. Input the correct reference
value.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Overload Power was
turned ON. An overload alarm was cleared
excessive number of times by
turning OFF the power. Reconsider and correct the
load, operating conditions, and
servomotor capacity.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Servo was
turned ON. Servomotor main circuit cable
wiring is incorrect or a contact in
servomotor wiring is faulty. Check and correct the servomo-
tor wiring.
Encoder cable wiring is incor-
rect or a contact in encoder wir-
ing is faulty.
A SERVOPACK fault occurred. Replace the SERVOPACK.
NOTE
AL1
AL2
AL3
AL1
AL2
AL3