CP-7[732-742]-series Mechanical Reference(2.9E) - 第225页

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 d…

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.

NP1MT005E

• 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.

Part 5 Chapter 2 Servo System Troubleshooting

Edition 2.6 5-2-9 CP-7 series Mechanical Reference

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.

NP1MT006E

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.

Part 5 Chapter 2 Servo System Troubleshooting

Edition 2.6 5-2-10 CP-7 series Mechanical Reference

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.

NP1MT007E

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.

• Check the power supply voltage.

• Servopack defective.

• Replace the Servopack.

• Manually correct the power

supply wiring.

• Correct the power supply

imbalance.

• Replace the Servopack.

Part 5 Chapter 2 Servo System Troubleshooting

Edition 2.6 5-2-11 CP-7 series Mechanical Reference