Error And Alarm Processing; Identifying Errors With The Led Indicators; Error Processing Flowchart - Omron CJ Series Operation Manual

Error and Alarm Processing

5-1 Error and Alarm Processing
5-1-1

Identifying Errors with the LED Indicators

Indicator Name
RUN RUN Indicator
ERC Temperature Control
Unit Error
ERH CPU Unit Error
5-1-2

Error Processing Flowchart

Error occurred.
Is the ERC Indicator lit?
No
Is the ERH Indicator lit?
No
Refer to 5-2 Troubleshooting.
72
The ERC Indicator or ERH Indicator will light if an alarm or error occurs in the
Temperature Control Unit.
(Front of Temperature Control Unit)
RUN
ERC
ERH
Color Status
Green Lit
Not lit
Red Lit
Not lit
Red Lit
Not lit
Use the following flowchart to identify the error when an error has occurred in
the Temperature Control Unit.
Yes
Is the RUN Indicator lit?
Yes
Is the RUN Indicator lit?
Meaning
The Temperature Control Unit is operating normally.
The Temperature Control Unit is stopped.
An error occurred in the Temperature Control Unit itself.
There is no error in the Temperature Control Unit.
An error occurred in the CPU Unit.
There is no error in the CPU Unit.
An alarm occurred while the Unit
was operating.
Yes
Refer to 5-1-3 Alarms Detected by
the Temperature Control Unit.
No
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
Refer to 5-1-4 Errors Originating in
the CPU Unit.
No
Confirm that the Unit's unit number
setting is correct.
Refer to 5-1-4 Errors Originating in
the CPU Unit.
Section 5-1