Troubleshooting; When The "Run" Led Is Flashing Or Turned Off; When The "Error" Led Is On Or Flashing - Mitsubishi Q62DA User Manual

7 TROUBLESHOOTING

7.2 Troubleshooting

7.2.1 When the "RUN" LED is flashing or turned off

(1) When flashing
Check item
Is the mode set to the offset/gain setting mode?
(2) When off
Check item
Is power being supplied?
Is the capacity of the power supply module adequate?
Has a watchdog timer error occurred?
Is the module correctly mounted on the base unit?

7.2.2 When the "ERROR" LED is on or flashing

(1) When on
Check item
Is an error being generated?
(2) When flashing
Check item
Is intelligent function module setting switch 5 set to "other
than 0"?
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Corrective action
Reset switch 4 of the intelligent function module setting for
GX Developer to the normal mode (see Section 4.5).
Corrective action
Confirm that the supply voltage for the power supply module
is within the rated range.
Calculate the current consumption of the CPU module, I/O
module and intelligent function module mounted on the base
unit to see if the power supply capacity is adequate.
Reset the PLC CPU and verify that it is lit. If the RUN LED
does not light even after doing this, the module may be
malfunctioning. Contact the nearest distributor or branch
office with a description of the problem.
Check the mounting condition of the module.
Corrective action
Confirm the error code and take corrective action described
in Section 7.1.
Corrective action
Using GX Developer parameter setting, set intelligent
function module setting switch 5 to "0" (see Section 4.5).
MELSEC-Q
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