Edwards EXS Series Instruction Manual page 70

Fault CrST ‐ Cannot reset
Cause The drive received a fault reset command when a run command was active.
Remedy Turn off the run command then de-energise and re-energise the drive.
Fault EF ‐ FWD/REV Run command input error
Cause A forward command and a reverse command were input at the same time for
longer than 0.5 second.
Remedy Examine the forward and reverse command sequence and correct the problem.
Fault HCA ‐ High current alarm
Cause The load is too heavy.
Remedy Decrease the load for applications with repetitive starts and stops.
Contact us.
Cause The acceleration time is too short.
Remedy Contact us.
Fault oH ‐ Heatsink overheat
Cause The airflow is not enough around the drive.
Remedy Check cubicle fan.
Cause The drive internal fan has stopped.
Remedy Check whether it should be replaced.
Fault dWAL ‐ Warm up finish
Cause Warm up completed.
Remedy The pump has been warmed up completely, the inlet valve must be opened
manually.
Fault dWA2 ‐ High temperature
Cause The stator reaches 120 °C which is very hot for stator.
Remedy Check cooling water.
A41870880_A
A41870880_A - Fault finding
Page 70 07/2021 - ©Edwards Limited