Evening men,
Hoping somebody can help me out here. I recently got a 3 phase dual motor screw lift dirt cheap. Only problem is it's 3 phase
I've downloaded the installation / service manual for the lift and thankfully it's a dual voltage 230/400v setup, just need to rewire the motors to delta configuration for 230v. There is a transformer for the control / safety circuitry, currently wired for 400v via 2 legs but this can be swapped to 230 by moving 1 leg into a different connector on the transformer. The low voltage side is 10/18v depending on 230 or 400v being the input.
Hopefully I've explained it well so far
There is 4 contactors, 2 per motor 1 up 1 down, when the up or down button is pressed it checks the limit switches and activates the corresponding contactors, there is also a sensor on each motor to ensure they are running in sync and if it's not level it cuts out a motor until it is back level.
I know with a vfd I can't simply wire the main plug to it and expect it to work, I have to wire the up/down switches directly to the vfd. Obviously the easiest way to do that would be rip all the control circuitry out and wire the switches in series with the upper and lower limit switches back to the vfd.
What I'm wondering is though if I can retain all the control circuitry and the ability to sync the motors, surely if I ran a new 230v live+neutral to the transformer it would power up that end of it and then I could use the wires originally used to switch the contactors to control the vfd either directly or via a relay?
It's a very long winded post and I apologise but hopefully someone can give me some feedback or opinions or comments on what I'm trying to achieve.
Just to add the motors are 2.6kw each and it's a 3200kg lift that will realistically speaking probably only ever be lifting 1500kg or so with me.
Hoping somebody can help me out here. I recently got a 3 phase dual motor screw lift dirt cheap. Only problem is it's 3 phase
I've downloaded the installation / service manual for the lift and thankfully it's a dual voltage 230/400v setup, just need to rewire the motors to delta configuration for 230v. There is a transformer for the control / safety circuitry, currently wired for 400v via 2 legs but this can be swapped to 230 by moving 1 leg into a different connector on the transformer. The low voltage side is 10/18v depending on 230 or 400v being the input.
Hopefully I've explained it well so far
There is 4 contactors, 2 per motor 1 up 1 down, when the up or down button is pressed it checks the limit switches and activates the corresponding contactors, there is also a sensor on each motor to ensure they are running in sync and if it's not level it cuts out a motor until it is back level.
I know with a vfd I can't simply wire the main plug to it and expect it to work, I have to wire the up/down switches directly to the vfd. Obviously the easiest way to do that would be rip all the control circuitry out and wire the switches in series with the upper and lower limit switches back to the vfd.
What I'm wondering is though if I can retain all the control circuitry and the ability to sync the motors, surely if I ran a new 230v live+neutral to the transformer it would power up that end of it and then I could use the wires originally used to switch the contactors to control the vfd either directly or via a relay?
It's a very long winded post and I apologise but hopefully someone can give me some feedback or opinions or comments on what I'm trying to achieve.
Just to add the motors are 2.6kw each and it's a 3200kg lift that will realistically speaking probably only ever be lifting 1500kg or so with me.