Mitsubishi Electric MELSEC QS SERIES User Manual page 92

6
PROCEDURES AND SETTINGS BEFORE SYSTEM
OPERATION
(2) Troubleshooting for switch setting
Item LED status
After power-on or during
1 switch setting, "L ERR."
LED turns on.
After the first setting saving
2 switch is pressed, "RUN"
LED does not flash.
After the second setting
saving switch is pressed,
3
the flash interval of "RUN"
LED is not changed.
6
- 29 6.6 Switch Setting
Table6.4 shows the corrective actions for the invalid LED operation at switch setting.
Table6.4 Troubleshooting for switch setting
Check description
Check if the link ID setting
switch, station number setting
switch and transmission speed
setting switch are pointing
positions outside the setting
range or not.
Check if the link ID setting
switch, station number setting
switch and transmission speed
setting switch is changed or
not after the setting saving
switch is pressed.
Check if the second setting
saving switch is pressed or not
within one second after the
first one was pressed.
Corrective action
• Set the positions of the link ID setting switch,
station number setting switch and
transmission speed setting switch within the
setting range.
• If the position each setting switch is set is
within the setting range, replace the safety
remote I/O module.
• Make the switch setting again from the
beginning of the procedure.
• If each setting switch is not changed after the
setting saving switch is pressed, replace the
safety remote I/O module.
• Press the setting saving switch after one or
more seconds passed.
• If the flash interval of "RUN" LED does not
change when the second setting saving switch
is pressed after one or more seconds passed,
replace the safety remote I/O module.