Omron OMNUC W Series Manual page 228

A.7A
A.7A: Overheat
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
ON ON
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
During Servomotor
operation
Cause
A The ambient temperature of the Servo
°
Driver exceeds 55 C.
B The air flow around the heat sink is bad.
C
Fan stopped.
D The Servo Driver is operating under over-
load.
E The Servo Driver is defective.
Note This alarm display tends to occur only with a Servo Driver of 30 W to 1,000 W.
9-17
9.3 Troubleshooting with Alarm Displays
ALM Output
ALO3
ON OFF
A, B,
When control circuit
C, D
power turned ON
Alter conditions so that the ambient temper-
ature goes below 55
Follow installation method and provide suf-
ficient surrounding space as specified.
Replace the Servo Driver.
Reduce load.
Replace the Servo Driver.
E
Remedy
°
C.
9