So we just wired up a small automotive shop. They bought a second-hand lift but only have a single phase service.
The motor is 3 phase, and the wiring on the controls is in pretty bad shape, so much of it will need replaced.
The controls are pretty simple. There is a momentary 3 position switch with a spring return for either up, down or off. There is an upper travel limit and lower travel limit for the motor. All of this can be controlled via a VFD pretty easily, and I think with the cost of salvaging the old controls and time involved, we can get a new system put in pretty quickly and it would be cheaper.
Here are the specs on the VFD I would need:
220V input single phase
3 phase 230V output
motor is 1135RPM and 4.9 HP
Need to have a couple inputs for the limit switches to stop travel.
I will use a contactor for power on/off to the drive
Can anyone suggest VFD's that will fit this profile?
The other option we have is to use transformers to create 3-phase, but I think given everything using a VFD is the way to go.
The motor is 3 phase, and the wiring on the controls is in pretty bad shape, so much of it will need replaced.
The controls are pretty simple. There is a momentary 3 position switch with a spring return for either up, down or off. There is an upper travel limit and lower travel limit for the motor. All of this can be controlled via a VFD pretty easily, and I think with the cost of salvaging the old controls and time involved, we can get a new system put in pretty quickly and it would be cheaper.
Here are the specs on the VFD I would need:
220V input single phase
3 phase 230V output
motor is 1135RPM and 4.9 HP
Need to have a couple inputs for the limit switches to stop travel.
I will use a contactor for power on/off to the drive
Can anyone suggest VFD's that will fit this profile?
The other option we have is to use transformers to create 3-phase, but I think given everything using a VFD is the way to go.