CP-7[732-742]-series Mechanical Reference(2.9E).pdf - 第226页

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. • Manual…

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

AC Servopack Check List for Troubleshooting

Alarm Alarm Name Status Cause Check Item Remedy

A.E0 SERCOS IF

Unset

• SERCOS IF CPU is set to

nonoperation (SERCOS IF

status (S or ST) LED (green)

does not come on).

• SERCOS IF does repeater

operation only.

• Problem with the SERCOS IF

connection.

• Base board defective. (SGDZ)

• SERCOS IF defective.

• Servopack defective.

• Set the switches 1 to 3 on the

servo amp according to the

electrical schematic.

• Reattach the connector between

the SGDH and the SERCOS IF.

• Reattach the connector between

the base board and the

SERCOS IF.

• Replace the base board.

(SGDZ)

• Replace the SERCOS IF.

• Replace the Servopack.

• Check that the connector

between the SGDH and the

SERCOS IF, or the base board

and the SERCOS IF (SGDZ) are

connected properly.

• Base board defective. (SGDZ)

• SERCOS IF defective.

(DPRAM (SGDH), CPU defective)

• Servopack defective.

(When using SGDZ, DPRAM

defective)

• Occurs at (10 sec. after)

control power on.

NP1MT008E

A.E2 WDC Error • Occurs after the

initialization of the

SERCOS communications.

• Fiber optics are cut.

• Power is off at one of the other

servo amps in the SERCOS

communications loop.

• Servo board is defective.

• SERCOS IF is defective.

• Check if the fiber optics connector

is detached or if the connection is

cut.

• Check if “bb” is flashing (SGDH)

at one of the servo amps within

the loop, or if its power is off.

• Check for power alarms such as

sudden stoppage.

• Check for alarms such as cuts in

servo board communications.

• SERCOS IF is defective.

• Manually readjust the fiber optics

cabling.

• Manually readjust the power and

power wiring.

• Improve the power source.

• Replace the Servopack.

• Replace the SERCOS IF.

A.E3 MST Loss • Occurs after the

initialization of the

SERCOS communications.

• Servo board is defective.

• SERCOS IF is defective.

• Check for alarms such as cuts in

servo board communications.

• SERCOS IF is defective.

• Replace the Servopack.

• Replace the SERCOS IF.

Part 5 Chapter 2 Servo System Troubleshooting

Edition 2.6 5-2-12 CP-7 series Mechanical Reference