Yaskawa MP940 - Manual (Page 395)

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.