Yaskawa MP940 - Manual (Page 394)

10.2 Troubleshooting
10-27
10
Status and Remedy for Alarm
„ A.E1
A.E1: Option Timeout
Display and Outputs
Note: OFF: Output transistor is OFF (alarm state).
ON: Output transistor is ON.
Status and Remedy for Alarm
„ A.E2
A.E2: Option WDC Error
Display and Outputs
Note: OFF:Output transistor is OFF (alarm state).
ON:Output transistor is ON.
Cause Remedy
A • No MP940 Module is mounted, or
MP940 is defective.
• There is no 24-VDC power supply
to the MP940.
• User program error
• Supply a 24-VDC power supply to the
MP940.
• Correct the MP940 user program.
• Initialize the MP940 Module’s memory.
• Replace the MP940 Module.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
OFF ON ON OFF
Cause Remedy
A Option Unit is defective. Replace the Option Unit.
Alarm Outputs
Alarm Code Outputs
ALM Output
ALO1 ALO2 ALO3
OFF ON ON OFF
A At power ON
A At power ON