Checking The Led Status - Mitsubishi Electric MELSEC iQ-F Series Quick Connection Manual

6. TROUBLESHOOTING
Checking the
Checking Procedure
LED Status

6.2 Checking the LED Status

If data communications between the programmable controller and the inverter are not performed when the
example program is executed, an error occurs.
Turning ON the forward rotation command input
Station number 0: Turn ON X1 (Forward rotation command).
Station number 1: Turn ON X11 (Forward rotation command).
Programmable controller operation
• The ERR LED turns ON.
Station number 0
• The output display LEDs, Y0 (Inverter running) and
Y1 (Forward rotation), turn OFF.
• Y3 (Alarm occurrence) turns ON.
Station number 1
• The output display LEDs, Y4 (Inverter running) and Y5
(Forward rotation), turn OFF.
• Y7 (Alarm occurrence) turns ON.
<Checking communication
status with LEDs>
LED status of the programmable controller
(RS-485)
RD
ON OFF
OFF ON
OFF OFF
When the programmable controller has one of the above errors, check the error code.
To the next page
For details on the error codes displayed on the FR-D700, refer to
Section 5.2 List of fault or alarm indications in the FR-D700 INSTRUCTION MANUAL (Applied)
Checking the
Error Code
Programmable controller
• The LED indication (0.00) remains unchanged.
• The corresponding error code is displayed.
Programmable
controller
SD
The programmable controller receives data but does not send data.
The programmable controller sends data but does not receive data.
The programmable controller does not send and receive data.
Inverter operation
Inverter
Operating status
(IB(NA)-0600366ENG).
1
2
3
4
5
6
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