Mitsubishi Q170MCPU User Manual page 163

6 INSPECTION AND MAINTENANCE
(l) Flowchart for when "RUN" LED turns off
The following shows the flowchart for when "RUN" LED turns off during
operation.
"RUN" LED turns off.
Does "POWER" LED
turn on ?
YES
Is "ERR." LED
on/flickering ?
NO
Reset the Motion controller.
Does "RUN" LED turn on ?
NO
Set the RUN/STOP/RESET switch to
STOP and write END to address 0
with the GX Developer.
Set the RUN/STOP/RESET switch to
RUN and enter to the monitor mode
with the GX Developer to be operated.
Does "RUN" LED turn on ?
YES
Possible cause is a sequence
program error.
Check the program and modify the
program error location.
NO
Does "RUN" LED turn on ?
YES
END
NO
(a) "Flowchart for when "POWER"
YES
(n) "Flowchart for when "ERR." LED
turns on/is flickering"
(1) Controller part fault/poor
YES
connection between the module
and base unit
(2) Excessive noise generation
Explain the error symptom and get
advice from our sales representative.
NO
Connect a surge suppression circuit,
such as CR, to the noise source.
6 - 28
LED turns off"
For the case of (1) For the
case of (2)