dineshdeshmuk
Full Member level 5
How to wire a VFD ? What things and accessories are required for good hook up of VFD ?
1) First Use a Three Phase Breaker for the input of VFD.
2) Connect the output of this breaker to a EMI Filter.
3) Then connect to R, S & T of the VFD
4) Connect Braking Resistors for frequent stops and starts of VFD
5) Connect the Output U , V & W of the VFD directly to the motor ??? OR connect the Output U , V & W of the VFD to a 3 phase contactor ? Also if use 3 phase contactor , should use an Overload also ?
6) And then from the contactor to the motor terminal .
Is the above method for hooking up VFD right ?
Also, should wire the fan (cooling fan) of the motor with external supply with a different breaker ? So that if motor runs on low speeds the fan always working with full rated rpms and hence external blower or cooling fan won't be used in this way ?
thanks a lot in advance
1) First Use a Three Phase Breaker for the input of VFD.
2) Connect the output of this breaker to a EMI Filter.
3) Then connect to R, S & T of the VFD
4) Connect Braking Resistors for frequent stops and starts of VFD
5) Connect the Output U , V & W of the VFD directly to the motor ??? OR connect the Output U , V & W of the VFD to a 3 phase contactor ? Also if use 3 phase contactor , should use an Overload also ?
6) And then from the contactor to the motor terminal .
Is the above method for hooking up VFD right ?
Also, should wire the fan (cooling fan) of the motor with external supply with a different breaker ? So that if motor runs on low speeds the fan always working with full rated rpms and hence external blower or cooling fan won't be used in this way ?
thanks a lot in advance