Delta MS300 Series User Manual page 509

Chapter 13 Warning CodesMS300
ID No. Display on LCD Keypad
39
Action Condition
Action Time
Warning Setting Parameter
Reset Method
Reset Condition
Record
Cause
Check if the CANopen card is
installed
Check if the CANopen speed is
correct
Malfunction caused by
interference
Communication cable is broken or
bad connected
Warning Name
CANopen bus off error
(CbFn)
Action and Reset
Hardware When CANopen card is not installed, the CbFn warning occurs.
When the master receives wrong communication package, the
CbFn warning occurs.
Software Too much interference on BUS
The master receives wrong package when the CAN_H and CAN_L
communication cables are short, CbFn warning occurs.
Immediately act when the fault is detected
N/A
Manual Reset
Cycle the power
When Pr.00-21 ≠ 3, CbFn is a "Warning", and the warning is not recorded.
Make sure the CANopen card is installed.
Reset CANopen speed (Pr.09-37)
1. Verify the wiring and grounding of the communication circuit. It is
recommended to separate the communication circuit from the main circuit,
or wire in 90 degree for effective anti-interference performance.
2. Make sure the communication circuit is wired in series.
3. Use CANopen cable or add terminating resistance.
Check or replace the communication cable.
500
Description
CANopen BUS off error
Corrective Actions