Yaskawa FSP Amplifier - Manual (Page 292)

FSP Amplifier User’s Manual Chapter 9: Inspection, Maintenance, and Troubleshooting
9-27
„ A.C1: Servo Run Away
Display and Outputs
Alarm Outputs
Alarm Code Output
ALO1 ALO2 ALO3
ALM Output
ON OFF ON OFF
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
At power ON.
When parameter
Pn 50A.1 = 7.
When Servo ON
(S-ON) signal is
turned ON.
A A, B, C, D
D
When the speed
reference is
entered.
Within 1 to 3
seconds after power
is turned ON.
When parameter
Pn 50A.1 7.
A
A, B, C, D
A, B, C
≠
Cause of the Problem Solution
A
Incorrect or disconnected
servomotor wiring. Check wiring and connectors
at the servomotor.
B
Incorrect or disconnected
encoder wiring. Check wiring and connectors
at the encoder.
C Defective encoder. Replace servomotor.
D Defective circuit board (1PWB). Replace servo amplifier.