V&T Technologies Co., Ltd.
http://www.ecodrivecn.com
Unique Instantaneous Mains Failure Reaction
Upon the instantaneous mains failure, the energy of the motor feedback bus will keep
the inverter running till the mains resumes normal.
When shutdown is caused by long-term power-failure during the operation of the
inverter, the inverter will provide alarm message after power resumes normal.
It supports the automatic operation after power-up.
The deceleration time during the power failure and the acceleration time after the
power recovery can be set independently.
It is especially suitable for:
Instantaneous power-failure startup equipment, such as chemical fiber and weaving
equipment, multi-point synchronization linkage equipment, fan/pump, etc.
Unique Speed Tracing Function
It doesn’t need special hardware detection circuit and no special function code to be set.
Within the range of 0 to 60Hz, the inverter can complete identification the motor rotating
speed, rotating direction and phase angle within 0.2s, and start smooth tracing on the
freely rotating motor.
Tracing mode 1: Quick and smooth tracing on the free speed motor without any impact.
It is especially suitable for:
The equipment whose operation shall be traced upon the power recovery after
instantaneous power failure, such as fan and pump.
Fig. 4 Quick and impactless rotating speed tracing upon the motor free rotation
Current
Rotating speed
