User Manual

VTS2000 Series frequency inverter
- 28 -
speed
Inverter power is too small
Adopt large power inverter
EHU1
Overvoltage
during
acceleration
Abnormal input voltage
Check input power
Restart the rotating motor
Set to start after DC braking
EHU2
Overvoltage
during
deceleration
Deceleration time is too short
Increase deceleration time
Abnormal input voltage
Check input power
EHU3
Overvoltage
during constant
speed
Abnormal input voltage
Check input power
EHU4
Over-voltage
during shutdown
Abnormal input voltage
Check input power
ELU0
Under-voltage
during operation
Input voltage is abnormal or the relay is
disconnect
Check the power supply voltage or ask service
from the manufacturer
ESC1
Power module
Inverter output short circuit or grounded
Check motor wiring