MEC-CP842-1.0E.pdf - 第211页
Troubleshooting >> Serv o System Troubleshooting MEC-CP842-1.0E 8-21 AC Servopack Check List for Troubleshooting Alarm Alarm Name Status Cause Check Item Remedy A.C5 Magnetic Polarity Detection Error · Power supply…
Troubleshooting >> Servo System Troubleshooting
8-20 MEC-CP842-1.0E
AC Servopack AC Servopack
Alarm Alarm Name Status Cause Check Item
Remedy
A.85 Encoder
Overspeed
• Occurs at power ON or
when motor is in operation.
• Servopack defective. • Replace the Servopack.
A.86 Encoder
Overheated
• Occurs at power ON or
when motor is in operation.
• Encoder defective.
• Servopack defective.
• Encoder temperature exceeds
the specified value.
• Check the ambient temperature
for the motor exceeds 35 C?
• Check the motor wiring or
connector inserted status at the
motor side.
• Check the encoder wiring and the
connector inserted status at the
encoder side.
• Encoder defective.
• Check the encoder and motor
wiring to motors A and B, if it is a
multiaxis amp.
• Replace the motor.
• Replace the Servopack.
• Reduce the ambient
temperature of the motor to
35 C or less.
A.b1 Reference Speed
Input Read Error
• Occurs at power ON or
when motor is in operation.
• Servopack defective.
• Replace the Servopack.
A.b2 Reference Torque
Input Read Error
• Occurs at power ON or
when motor is in operation.
• Servopack defective.
• Replace the Servopack.
A.bF System Alarm • Occurs at power ON or
when motor is in operation.
• Servopack defective.
• Replace the Servopack.
A.C1 Servo Overrun • Occurs at power ON. • Incorrect motor wiring.
• Incorrect encoder wiring.
• Encoder defective.
• Servopack defective.
• Manually correct the motor
wiring.
• Manually correct the encoder
wiring.
• Replace the motor.
• Replace the Servopack.
C746M5T17
• Encoder defective (Initialization
polarity sensor data error)
• Check the encoder wiring and the
connector inserted status at the
encoder side.
A.C2
Phase Error • Occurs at power ON or
when motor is in operation.
• Servopack defective.
• Encoder defective.
• Incorrect encoder wiring.
• Replace the Servopack.
• Replace the motor.
• Manually correct the encoder
wiring.
Troubleshooting >> Servo System Troubleshooting
MEC-CP842-1.0E 8-21
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item
Remedy
A.C5 Magnetic Polarity
Detection Error
· Power supply to the main circuit
is turned off.
· Incorrect encoder wiring.
· Encoder defective.
· Servopack defective.
· Check connections around the
power supply to the main circuit.
· Replace the motor.
· Replace the Servopack.
A.C8 Absolute Encoder
Clear Error and
Multiturn Limit
Setting Error
· Occurs at power ON.
· Occurs at encoder alarm
reset.
· Encoder defective.
· Servopack defective.
· Encoder defective.
· Servopack defective.
· Check the power supply to the
main circuit.
· Check the encoder wiring.
· Servopack defective.
· Check the encoder wiring or
connector insertion at the
encoder side.
· Encoder defective.
· Servopack defective.
· Check the encoder wiring.
· Servopack defective.
· Replace the motor.
· Replace the Servopack.
· Replace the motor.
· Replace the Servopack.
A.C6
A.C7
PA-, PB-phase
connection error
C-phase
connection error
· Occurs at power ON or
when motor is in operation.
· Servopack defective.
· Incorrect encoder wiring.
· Encoder defective.
· Replace the Servopack.
· Manually correct the encoder
wiring.
· Replace the motor.
C746M5T18
A.C9 Encoder Communi-
cations Error
· Occurs at power ON or
during operation.
· Encoder wiring incorrect or poor
connection.
· Encoder defective.
· Servopack defective.
· Manually correct the encoder
wiring.
· Replace the motor.
· Replace the Servopack.
A.CA Encoder Parameter
Error
· Occurs at power ON.
· Occurs during operation.
· Encoder defective.
· Servopack defective.
· Encoder defective.
· Servopack defective.
· Replace the motor.
· Replace the Servopack.
· Replace the motor.
· Replace the Servopack.
Troubleshooting >> Servo System Troubleshooting
8-22 MEC-CP842-1.0E
AC Servopack Check List for Troubleshooting
Alarm Alarm Name Status Cause Check Item
Remedy
A.Cb Encoder Echoback
Error
• Encoder wiring incorrect or poor
connection .
• Encoder defective.
• Servopack defective.
• Manually correct the encoder
wiring.
• Replace the motor.
• Replace the Servopack.
A.d0 Position Error
Pulse Overflow
• Occurs at control power ON.
• Occurs during operation.
• Servopack defective.
• Parameter Pn505 value is 0.
• Imperfect motor wiring.
• Imperfect encoder wiring.
• Servopack defective.
• Load capacity is too large.
• Check the encoder wiring or
connector insertion at the
encoder side.
• Encoder defective.
• Servopack defective.
• Check the parameter
(overflow: Pn505).
• Check that the motor U, V and W
wiring is correct.
• Excessive load on servo.
• Check parameter Pn205.
• A.CC occurs even if the Pn205
setting is correct.
• Replace the Servopack.
• Correct the Pn505 setting
(Refer to the parameter list
supplied with the machine).
• Manually correct the motor
wiring.
• Manually correct the encoder
wiring.
• Replace the Servopack.
• Check for excessive load on
components driven by the servo.
A.CC Multiturn Limit
Disagreement
• Occurs at power ON.
• Occurs during operation.
• Occurs at power ON or
during operation.
• Servopack parameter is wrong.
• The multiturn limit has not been
set in the encoder.
• Servopack defective.
• Correct the Pn205 setting
(Refer to the parameter list
supplied with the machine).
• Execute the multiturn limit
setting change Fn013 when
the alarm occurs.
• Replace the Servopack.
C746M5T19
A.F1 Power Line Open
Phase
• Occurs at control power ON.
• Occurs at main power ON or
when motor is in operation.
• Servopack defective.
• 3-phase power supply is not
connected.
• 3-phase power supply is
imbalanced.
• Servopack defective.
• Servopack defective.
• Check the power supply voltage.
• Check the power supply voltage.
• Servopack defective.
• Replace the Servopack.
• Manually correct the power
supply wiring.
• Correct the power supply
imbalance.
• Replace the Servopack.