Mitsubishi Electric MELSEC Q Series User Manual page 37

2 SYSTEM CONFIGURATION
LED display
RUN RUN LED (green) is OFF.
ERR. ERR. LED (red) is OFF.
RUN Steady RUN (green) LED display.
ERR. ERR. LED (red) is OFF.
RUN Steady RUN LED (green) display.
ERR.
Steady ERR. LED (red) display.
RUN Steady RUN LED (green) display.
ERR. ERR. LED (red) remains flashing.
(2) LED display
The LED displays by the state of the QD74MH as follows.
Hardware failure,
System error (Error code 100)
The module operates normally.
System error (Except error code 100),
Hardware failure
Operation error, Interface error,
Servo error
Details
2 - 6
MELSEC-Q
Description
If RUN LED (green) is OFF,
exchange the unit because it
might be a failure.
―
Check the error in the buffer
memory and dispose.
Exchange the unit for
hardware failure because it
might be a failure.
Check the error in the buffer
memory and correct the
parameter or positioning data.
: OFF, : ON, : Flashing