Edwards EXS Series Instruction Manual page 67

Cause The motor main circuit cable is contacting ground to make a short circuit.
Remedy Examine the motor main circuit cable for damage and repair short circuits.
Measure the resistance between the motor main circuit cable and the ground
terminal. If there is electrical conduct on, replace the cable.
Fault CE ‐ Modbus communication error
Cause The communications cable wiring is incorrect.
Remedy Correct wiring errors.
Cause There is a short‐circuit in the communications cable or the communications cable
is not connected.
Remedy Repair short circuits and connect cables.
Replace the defective communications cable.
Cause The communication protocol is not compatible.
Remedy Examine the values set in H5-xx.
Examine the settings on the controller side and correct the difference in
communication conditions.
Fault GF ‐ Ground fault
Cause Overheating caused damage to the motor or the motor insulation is not
satisfactory.
Remedy Measure the motor insulation resistance and replace the motor if there is electrical
conduction or unserviceable insulation.
Cause The motor main circuit cable is contacting ground to make a short circuit.
Remedy Examine the motor main circuit cable for damage and repair short circuits.
Measure the resistance between the motor main circuit cable and the ground
terminal. If there is electrical conduction, replace the cable.
Cause There is a problem with the drive hardware.
Remedy Contact us.
Fault LF ‐ Output phase loss
Cause The motor main circuit cable is disconnected.
Remedy Connect motor main circuit cable wiring. Correct wiring errors in the main circuit
drive input power.
Cause The screws on the drive output terminals are loose.
Remedy Tighten the terminal screws to the correct tightening torque.
Cause The output transistor in the drive is damaged.
Remedy Contact us.
A41870880_A
A41870880_A - Fault finding
Page 67 07/2021 - ©Edwards Limited