Code

Name

Causes

Possible Solutions

CE

Modbus Communication Error

The communications cable wiring is incorrect.

Correct wiring errors.

There is a short circuit in the communications cable or the communications cable is not connected.

  • Repair short circuits and connect cables.

  • Replace the defective communications cable.

Electrical interference caused a communication data error.

  • Examine the control circuit lines, main circuit lines, and ground wiring, and decrease the effects of electrical interference.

  • Make sure that a magnetic contactor is not the source of the electrical interference, then use a Surge Protective Device if necessary.

  • Use only the recommended cables or other shielded line. Ground the shield on the controller side or the drive input power side.

  • Separate the communication wiring from drive power lines, and install a noise filter to the input side of the power supply for communication.

  • Decrease the effects of electrical interference from the controller.
Note:

  • The drive detects this error if it does not correctly receive control data for the CE detection time set to H5-09 [CE Detection Time].

  • Do a Fault Reset to clear the fault.

  • If the drive detects this error, the drive will operate the motor as specified by the stopping method set in H5-04 [Communication Error Stop Method].