Edwards EXS Series User Manual

Fault LF2 ‐ Output current imbalance
Cause Phase loss occurred in the wiring on the output side of the drive.
Remedy Examine for wiring errors or disconnected wires on the output side of the drive and
repair pr
oblems.
Cause The output terminal screws of the drive are loose.
Remedy Tighten the terminal screws to the correct ght
ening torque.
Cause The drive output circuit is broken.
Remedy Re-energise the drive. Contact us.
Fault PF ‐ Input phase loss
Cause There is a phase loss in the drive input power.
Remedy Correct errors with the wiring for main circuit drive input power.
Cause There is loose wiring in the drive input power terminals.
Remedy Tighten the terminal screws to the correct gh
t
ening torque.
Cause The drive input power voltage is changing too much.
Remedy Examine the input power for problems.
Make the driv
e input power stable.
Fault SC ‐ Short circuit/IGBT failure
Cause Overheang caused damag
e to the motor or the motor insulaon is not
sasfactory.
Remedy Measure the motor insulaon resistance and replace the motor if there is electrical
conducon or unserviceable insulaon.
Cause The motor main circuit cable is con
tacng 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 conducon, replace the cable.
Fault Uv1 ‐ DC Bus undervoltage
Cause There is a phase loss in the drive input power.
Remedy Correct errors with the wiring for main circuit drive input power.
Cause There is loose wiring in the drive input power terminals.
Remedy Tighten the terminal screws to the correct gh
tening torque.
Cause The drive input power voltage is changing too much.
Remedy Examine the input power for problems. Make the drive input power stable.
If the input pow
er supply is good, examine the magnec contactor on the main
circuit side for problems.
07/2021 - ©Edwards Limited
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Edwards EXS Series Specifications

General

Brand	Edwards
Model	EXS Series
Category	Water Pump
Language	English