Table 26 Inverter fault codes
Fault code
Condition
12
on page 123
8
on page 123
7
on page 124
33
CE - Modbus communication error
6
on page 125
28
on page 125
54
LF2 - Output current imbalance
27
on page 125
5
SC - Short circuit/IGBT failure
on page 126
2 or 60000
on page 126
3 or 60000
Uv2 - Control power undervoltage
on page 126
4 or 60000
Uv3 - Soft charge answerback fault
on page 126
17
EF3 - External fault(terminal S3)
59
STO - Safe Torque Off function activated
For other fault codes, contact us.
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.
07/2021 - ©Atlas Copco
Page 123
1950840208_A
Fault finding
Содержание DWS 450 VSD+
Страница 1: ...Dry Screw Vacuum Pump DWS VSD INSTRUCTION MANUAL 1950840208_A Original instructions ...
Страница 132: ...14 Legal declarations ...
Страница 137: ...atlascopco com ...