Omron Sysmac CJ Series, Operation Manual

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Error and Alarm Processing Section 5-1
5-1 Error and Alarm Processing
5-1-1 Identifying Errors with the LED Indicators
The ERC Indicator or ERH Indicator will light if an alarm or error occurs in the
Temperature Control Unit.
5-1-2 Error Processing Flowchart
Use the following flowchart to identify the error when an error has occurred in
the Temperature Control Unit.
(Front of Temperature Control Unit)
RUN
ERC
ERH
Indicator Name Color Status Meaning
RUN RUN Indicator Green Lit The Temperature Control Unit is operating normally.
Not lit The Temperature Control Unit is stopped.
ERC Temperature Control
Unit Error Red Lit An error occurred in the Temperature Control Unit itself.
Not lit There is no error in the Temperature Control Unit.
ERH CPU Unit Error Red Lit An error occurred in the CPU Unit.
Not lit There is no error in the CPU Unit.
Error occurred.
Is the ERC Indicator lit?
Is the RUN Indicator lit?
An alarm occurred while the Unit
was operating.
Refer to 5-1-3 Alarms Detected by
the Temperature Control Unit .
Confirm that the Unit’s Initialization
Data is correct.
Refer to 5-1-3 Alarms Detected by
the Temperature Control Unit .
An error occurred in the CPU Unit.
Yes
No
Yes
No
Refer to 5-1-4 Errors Originating in
the CPU Unit .
Confirm that the Unit’s unit number
setting is correct.
Refer to 5-1-4 Errors Originating in
the CPU Unit .
Refer to 5-2 Troubleshooting .
Is the ERH Indicator lit?
Yes
No
Is the RUN Indicator lit?
Yes
No