MattH
Member
- Messages
- 4,521
- Location
- Cornwall
After a lot of work moving my new lathe into my shed / workshop and then all the associated work sorting and rearranging the shed the lathe is finally running.
Today I finished rewiring the controls for single phase. I had already swapped out the original 3ph 3hp motor as it was not dual voltage, I got a great deal on a old but unused Brook Crompton 3hp motor so fitted that before moving the lathe into my shed.
The lathe has no clutch, it has a mechanical forward / reverse switch on a shaft that operates an electrical start stop via contactors. And a pair of push buttons that act as an NVR via another contactor (all 415v).
I stripped all this out and fitted a 3hp inverter. I also stripped out the old push buttons and fitted some modern equivalents.
The way it works now is that I have a 16a MCB dedicated in my sheds CU that runs via armour cable to a rotary isolator next to the lathe. From here it runs into the lathes end pedestal and into a modern 240v contactor which is operated with the push buttons to latch the power supply to the inverter. The old mechanical spindle control now runs into the inverter to allow for soft start and reverse.
Today I finished rewiring the controls for single phase. I had already swapped out the original 3ph 3hp motor as it was not dual voltage, I got a great deal on a old but unused Brook Crompton 3hp motor so fitted that before moving the lathe into my shed.
The lathe has no clutch, it has a mechanical forward / reverse switch on a shaft that operates an electrical start stop via contactors. And a pair of push buttons that act as an NVR via another contactor (all 415v).
I stripped all this out and fitted a 3hp inverter. I also stripped out the old push buttons and fitted some modern equivalents.
The way it works now is that I have a 16a MCB dedicated in my sheds CU that runs via armour cable to a rotary isolator next to the lathe. From here it runs into the lathes end pedestal and into a modern 240v contactor which is operated with the push buttons to latch the power supply to the inverter. The old mechanical spindle control now runs into the inverter to allow for soft start and reverse.