Edwards EXS Series Instruction Manual page 66

Fault oL2 ‐ Drive overload
Cause The load is too large.
Remedy Decrease the load.
Cause The acceleration/deceleration times or cycle times are too short.
Remedy Contact us.
Cause Phase loss in the input power supply is causing the output current to change.
Remedy Correct errors with the wiring for main circuit drive input power.
Make sure that there is no phase loss and repair problems.
Cause Pump restarted when it is still hot.
Remedy Wait for 60 minutes and restart the pump again. If the pump does not start, contact
us.
Fault ov ‐ Overvoltage
Cause The deceleration time is too short and too much regenerative energy is flowing
back into the drive.
Remedy Contact us.
Cause The acceleration time is too short.
Remedy Contact us.
Cause There are surge voltages in the input power supply
Remedy Contact us.
Cause The drive output cable or motor is shorted to ground (the current short to ground
is charging the main circuit capacitor of the drive through the power supply).
Remedy Examine the motor main circuit cable, terminals, and motor terminal box, and then
remove ground faults.
Re-energise the drive.
Cause The power supply voltage is too high.
Remedy Decrease the power supply voltage to match the drive rated voltage.
Fault oC ‐ Overcurrent
Cause The load is too heavy.
Remedy Contact us.
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.
A41870880_A
A41870880_A - Fault finding
Page 66 07/2021 - ©Edwards Limited