CP-7[732-742]-series Mechanical Reference(2.9E) - 第227页

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 …

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

AC Servopack Check List for Troubleshooting

Alarm Alarm Name Status Cause Check Item Remedy

A.E4 MDT Loss • Fiber optics are cut.

• Servo board is defective.

• SERCOS IF is defective.

• Manually readjust the fiber

optics cabling.

• Replace the Servopack.

• Replace the SERCOS IF.

• Check if the fiber optics connector

is detached or if the connection is

cut.

• Check for alarms such as cuts in

servo board communications.

• SERCOS IF is defective.

• Occurs after the

initialization of the

SERCOS communications.

NP1MT009E

A.E7 SERCOS IF Error • Occurs at power ON. • SERCOS IF is not connected

correctly.

• SERCOS IF is defective.

• Check that the connector

between the SGDH and the

SERCOS IF is connected properly.

• SERCOS IF is defective.

(DPRAM is defective).

• Reattach the connector.

• Replace the SERCOS IF.

CPF00

CPF01

Digital Operator

Transmission Error 1

Transmission Error 2

• Occurs at power ON when

the digital operator is connected

or when the digital operator is

connected after power ON.

(Whether transmission is

established is determined by

checking the data code of the

signal that is sent every approx.

100 msec from the Servopack.

If the data code is normal,

transmission is established.)

• Imperfect connection between

the digital operator and

Servopack.

• Digital operator defective.

• Servopack defective.

• Incorrect cable or connection

between the digital operator and

Servopack.

• Digital operator control defective.

• Servopack defective.

• Insert the connector again or

replace the cable.

• Replace the digital operator.

• Replace the Servopack.

Part 5 Chapter 2 Servo System Troubleshooting

Edition 2.6 5-2-13 CP-7 series Mechanical Reference