Omron XTRADRIVE User Manual page 264

XtraDrive User Manual
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A.86: Encoder Overheated
Display and Outputs
ALO1
OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
During servomotor
operation
A
B
C
D
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A.b1, A.b2
A.b1: Reference Speed Input Read Error
A.b2: Reference Torque Input Read Error
The alarm output, status, and remedy for A.b1 are the same as for A.b2.
Display and Outputs
ALO1
OFF
Note: OFF: Output transistor is OFF (alarm state).
Status and Remedy for Alarm
During servomotor
operation
A
B
C
Chapter 9: Inspection, Maintenance, and Troubleshooting
Alarm Outputs
Alarm Code Output
ALO2
OFF
A, B
Cause of the Problem
The ambient temperature of the
servomotor is high.
Servomotor is operating under
overload.
Defective circuit board (1PWB).
Encoder defective.
Alarm Outputs
Alarm Code Output
ALO2
OFF
A, B
Cause of the Problem
Error in reference read-in unit
(A/D Converter, etc.).
Faulty reference read-in unit
(A/D Converter, etc.).
Defective circuit board (1PWB).
9-16
ALM Output
ALO3
OFF OFF
When the control
panel is turned ON.
Solution
Alter conditions so that the
ambient temperature goes
below 40°C.
Reduce load.
Replace servo amplifier.
Replace servo amplifier.
ALM Output
ALO3
OFF OFF
At power ON.
Solution
Reset alarm and restart
operation.
Replace servo amplifier.
Replace servo amplifier.
C, D
A, B, C