Troubleshooting With Leds - Mitsubishi Electric MELSEC QS SERIES User Manual

9
TROUBLESHOOTING

9.2 Troubleshooting with LEDs

This section classifies the error definitions by the LED staus and describes them.
Error occurrence
NO
Isn't the "POWER" LED
turned on?
YES
NO
Isn't the "RUN" LED
turned on?
YES
YES
Is the "ERR." LED
flashing?
NO
NO
Isn't the "SAFETY" LED
turned on?
YES
YES
Is the "ERR." LED
turned on?
NO
NO
Isn't the "L RUN" LED
turned on?
YES
NO
Is the "L ERR." LED
flashing?
YES
YES
Is the "L ERR." LED
turned on?
NO
NO
Isn't the "SD"/"RD" LED
dimly turned on?
YES
Please contact your local nearest
Mitsubishi or representative, explaining
a detailed description of the problem.
Figure 9.1 Troubleshooting flowchart
Section 9.2.1
Flowchart for when
the "POWER" LED is not turned on
Section 9.2.2
Flowchart for when the
"RUN" LED is not turned on
Section 9.2.3
Flowchart for when the
"ERR." LED is flashing
Section 9.2.4
Flowchart for when
the "SAFETY" LED is not turned on
Section 9.2.5
Flowchart for when
the "ERR." LED is turned on
Section 9.2.6
When the "L RUN"
LED is not turned on
Section 9.2.7
Flowchart for when
the "L ERR." LED is flashing
Section 9.2.8
When the "L ERR."
LED is turned on
Section 9.2.9
When the "SD"/"RD"
LED is not dimly turned on
9.2 Troubleshooting with LEDs
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