IanX
Aluminum
- Joined
- Oct 13, 2015
- Location
- Poitou-Charentes, France
I am a one man band. I now have a rural base and there is 3 phase nearby but bringing it 100 yards to my property will be mid four figures. The standing tariff is twice the existing and kWh rate 20% higher. The existing 1 phase 230 supply is rated 18kW.
There are 20 motors between all of the machines, 2 of them are dual speed, 1 is an Arboga Dahlander, the other as yet unconfirmed in a Kearns baby HBM.
With only 2 hands there will only be one machine in operation, productivity is unimportant.
The mill is the most powerful at about 5HP including table drive. The mill and a J&S 540 have 4 motors each. Everything else 2 or 1 each.
I have access to Siemens drives for extremely cheap but the thought of fitting a score of drives seems a waste and I would rather have the full fat as I enjoy seeing smoke.
I have been reading on this subject for days and got nowhere fast. I am hoping a single phase transformer upstream of a 15HP 3 phase VFD fitted to a cart to be wheeled to the machines might be a solution.
I see no consensus anywhere on powering coolant pumps or actuating table drives with spindle motor in operation fed by VFD. I have no use for speed control other than a soft start for the spindles (trying to avoid tripping breakers.
The English guy who sells modified Teco drives insists his wares will tolerate in use switching of auxiliary motors. The largest capacity he offers is claimed to be 5HP, no overhead there. My job in digital electronics did not prepare me for this and my knowledge is found wanting.
There will be no rotary phase convertor, I will take up woodworking before that happens.
Your suggestions, proven solutions are very much appreciated!
There are 20 motors between all of the machines, 2 of them are dual speed, 1 is an Arboga Dahlander, the other as yet unconfirmed in a Kearns baby HBM.
With only 2 hands there will only be one machine in operation, productivity is unimportant.
The mill is the most powerful at about 5HP including table drive. The mill and a J&S 540 have 4 motors each. Everything else 2 or 1 each.
I have access to Siemens drives for extremely cheap but the thought of fitting a score of drives seems a waste and I would rather have the full fat as I enjoy seeing smoke.
I have been reading on this subject for days and got nowhere fast. I am hoping a single phase transformer upstream of a 15HP 3 phase VFD fitted to a cart to be wheeled to the machines might be a solution.
I see no consensus anywhere on powering coolant pumps or actuating table drives with spindle motor in operation fed by VFD. I have no use for speed control other than a soft start for the spindles (trying to avoid tripping breakers.
The English guy who sells modified Teco drives insists his wares will tolerate in use switching of auxiliary motors. The largest capacity he offers is claimed to be 5HP, no overhead there. My job in digital electronics did not prepare me for this and my knowledge is found wanting.
There will be no rotary phase convertor, I will take up woodworking before that happens.
Your suggestions, proven solutions are very much appreciated!