Peter S
Diamond
- Joined
- May 6, 2002
- Location
- Auckland, New Zealand
I have a Lenze VFD which I have fitted to a friends Colchester Student lathe to run its 3hp three phase motor using single phase input.
At present I have a remote on/off switch connected between terminals 28 and 20 to start and stop the lathe.
Reversing the lathe spindle direction was originally done by reversing the motor.
I am guessing I can now do this internally in the VFD?
Could I wire in a forward-reverse/off switch? If so, could someone please advise which terminals to connect.
I am electrically challenged but can do basic wiring if it is explained. I can also find my way around the parameter menu if required.
Another question - I guess the motor should be allowed to stop before reversing its direction? Can this be controlled by the ramp times or some other method? Or simply pause between switching direction.
Please see attached diagrams.
Model details:
ESMD222W2SFA000XXID20
Input: 1(2)/N/PE, 230/240 volts, 21 Amps
Output: 3/PE, 0-230 volts, 9.5 amps.
2.2kW (3 hp)
0-240 Hz.
CAN open, Basic I/O
Integral filter
(This model was intended to be controlled by a PLC, but works fine as a single to three phase convertor with soft starts. I can't connect a pot for speed control, but can connect a push button to increase or lower speed. I am not intending to do this at present, it will run at a constant 50 Hz).
BTW, New Zealand uses 50 Hz, 230 volt single phase.
At present I have a remote on/off switch connected between terminals 28 and 20 to start and stop the lathe.
Reversing the lathe spindle direction was originally done by reversing the motor.
I am guessing I can now do this internally in the VFD?
Could I wire in a forward-reverse/off switch? If so, could someone please advise which terminals to connect.
I am electrically challenged but can do basic wiring if it is explained. I can also find my way around the parameter menu if required.
Another question - I guess the motor should be allowed to stop before reversing its direction? Can this be controlled by the ramp times or some other method? Or simply pause between switching direction.
Please see attached diagrams.
Model details:
ESMD222W2SFA000XXID20
Input: 1(2)/N/PE, 230/240 volts, 21 Amps
Output: 3/PE, 0-230 volts, 9.5 amps.
2.2kW (3 hp)
0-240 Hz.
CAN open, Basic I/O
Integral filter
(This model was intended to be controlled by a PLC, but works fine as a single to three phase convertor with soft starts. I can't connect a pot for speed control, but can connect a push button to increase or lower speed. I am not intending to do this at present, it will run at a constant 50 Hz).
BTW, New Zealand uses 50 Hz, 230 volt single phase.