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Chapter 3. Diagnosis of the Option Status and LED Definition
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Chapter 3. Diagnosis of the Option Statuses and LED
Definition
3.1 Definition of the LED Signal
The CANopen communication option has 4 LEDs.
LED
Description
CPU
When the Option Module is energized and the CPU is in
normal operation state, this LED is turned on and off at 1
second cycle – on for 500 ms and off for 500 ms.
ERR
This LED turns on if the Option parameters have been set up
inappropriately, or the Internal CAN communication between
the inverter and the CANopen is lost.
NODE
This LED turns on according to the status of the current NMT
(Network Management).
BUS
This LED turns on or off according to the baud rate or profile
set up, or communication status.
3.2 Diagnosis of Option by LED Signal
LED LED Signal
Option
Status
Possible Cause
Action
CPU
Kept OFF
No Power
Failure in power
supply (5V) to the
CANopen
communication
Module
Check inverter
power supply.
Check power supply
to the CANopen
communication
Module
Blink at 1
sec intervals
On Power
5V power supplied Normal status
ERR
Kept OFF
No Error
Normal Option
setting
Normal status
Blinks
synchronous
ly with the
CPU LED
Internal CAN
communicatio
n Error
Data
communication
between the
inverter and
Option is lost.
Turn the inverter
power off, reinstall
the Option Module
and turn the power
on again.