Troubleshooting By Symptom; When The A/D Converter Module Does Not Start Up; When The Run Led Flashes Or Turns Off; When The Err Led Turns On - Mitsubishi Electric R60AD8-G User Manual

3.3

Troubleshooting by Symptom

When the A/D converter module does not start up

Check item
Check that five seconds have passed since the power supply module is
powered off.

When the RUN LED flashes or turns off

When flashing
Check item
Check whether the module is in offset/gain setting
mode.
Check whether the module is selected as a target
module for the online module change.
When turning off
Check item
Check whether the power is supplied.
Check whether the capacity of the power supply module is enough.
Check whether the module is mounted properly.
Check whether the module is during online module change and is ready for
the online module change.
Cases other than the above

When the ERR LED turns on

When turning on
Check item
Check whether any error has occurred.
3 TROUBLESHOOTING
104
3.3 Troubleshooting by Symptom
Corrective action
After the power supply module is powered off, wait at least five seconds
before turning on the input power supply to the power supply module.
Cause
In the module parameter setting of the engineering
tool, the programmable controller power supply
has been turned off and on, or the CPU module
has been reset when "Operation mode setting" is
"Offset/gain setting mode".
The G(P).OFFGAN instruction has been executed
with the mode switched to offset/gain setting mode.
The value in 'Mode switching setting' (Un\G296,
Un\G297) has been changed and the mode has
been switched to the offset/gain setting mode.
The base number and slot number of the A/D
converter module have been set in Module
selection (base unit No.) (SD1600) or Module
selection (slot No.) (SD1601).
Corrective Action
Check that the supply voltage of the power supply module is within the rated
range.
Calculate the current consumption of mounted modules, such as the CPU
module, I/O modules, and intelligent function modules to check that the power
capacity is enough.
Check the mounting state of the module.
Perform the online module change. For details, refer to the following manual.
 MELSEC iQ-R Online Module Change Manual
Reset the CPU module, and check if the RUN LED turns on.
If the RUN LED still remains off, the possible cause is a failure of the module.
Please consult your local Mitsubishi representative.
Corrective Action
Check 'Latest error code' (Un\G0) and take actions described in the list of
error codes.
Page 108 List of Error Codes
Corrective Action
In the module parameter setting of the engineering
tool, set "Operation mode setting" to "Normal mode
(A/D conversion process)" and turn off and on the
programmable controller power supply, or reset the
CPU module.
Review the program that uses the G(P).OFFGAN
instruction to check whether the mode has been
switched erroneously.
Review the program that uses 'Mode switching
setting' (Un\G296, Un\G297) to check whether the
mode has been switched erroneously.
Turn on Module selection cancel request flag
(SM1615).