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Status and remedy for alarm, A.f1, Display and outputs – Yaskawa MP940 User Manual

Page 395: Cpf00

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SERVOPACK Inspection, Maintenance, and Troubleshooting

10.2.1 Troubleshooting Problems with Alarm Displays

10-28

Status and Remedy for Alarm

„

A.F1

A.F1: Power Line Open Phase

Display and Outputs

Note: OFF: Output transistor is OFF (alarm state).

ON: Output transistor is ON.

Status and Remedy for Alarm

Note: A and B tend to occur in a SERVOPACK with a capacity of 500 W or

higher.

„

CPF00

CPF00: Digital Operator Transmission Error 1

This alarm is not stored in the alarm trace-back function memory.

Cause

Remedy

A

Option Unit is defective.

Replace the Option Unit.

Alarm Outputs

Alarm Code Outputs

ALM Output

ALO1

ALO2

ALO3

OFF

ON

OFF

OFF

Cause

Remedy

A

One phase (L1, L2, or L3) of the
main circuit power supply is discon-
nected.

• Check power supply.
• Check wiring of the main circuit power

supply.

• Check MCCB, noise filter, magnetic con-

tactor.

B

There is one phase where the line
voltage is low.

Check power supply.

C

SERVOPACK defective.

Replace SERVOPACK.

A

At power ON

C

A,B

At main circuit power

supply ON.

Occurred when the control

power turned ON.