Filter
Top Products
8 - 3
8.1 Error Processing and Recovery Methods
8.1.2 When the RUN LED turns OFF
8
TROUBLESHOOTING
8.1.2 When the RUN LED turns OFF
8.1.3 When the RUN LED and ERR.LED turn ON
8.1.4 When the RUN LED and FUSE LED turn ON
POINT
Even if the fuse of the external coincidence output part is blown, the FUSE LED
does not turn ON unless a voltage is applied to the external coincidence output
power supply terminal.
Table 8.3 When the RUN LED turns OFF
Check item Action Reference
Is the power supplied?
Check if the service voltage of the power supply
module is within the rated range.
----
Is the capacity of the power supply module
sufficient?
Calculate the consumption current of the modules
mounted to the base unit such as CPU module, I/O
module, and intelligent function module, and check
that the current capacity is sufficient.
----
Is there a watchdog timer error?
Reset the programmable controller CPU and check
that the RUN LED turns ON. If the RUN LED
remains OFF even doing so, the QD64D2 is at
fault. Please consult your local Mitsubishi
representative, explaining a detailed description of
the problem.
Section 4.3
Are the modules correctly mounted to the base
unit?
Check the module mounting status. Section 4.1
Table 8.4 When the RUN LED and ERR.LED turn ON
Check item Action Reference
Is there any errors?
Check the error code (Un\G18) of channels in use
and take action described in Error Code List.
Section 8.11.1
Table 8.5 When the RUN LED and FUSE LED turn ON
Check item Action Reference
Is the fuse of the external coincidence output part
blown?
Please consult your local Mitsubishi
representative, explaining a detailed description of
the problem.
Section 4.3