GeorgeDreisch
Plastic
- Joined
- Dec 19, 2020
I’m a new old guy here, looking to retrofit a recently acquired SuperMax YCM-40 with a more modern motion controller.
The YCM-40 came with an old Centroid CNC4-B24-MD3, with what I believe are NEMA 42 29 in/lb DC, SEM motors. These have 4 wires plus a ground coming from each motor, and respective connections on each axis card / board of the CNC 4. Unfortunately, someone has painted the machine, and the motor labels are gone. First question I guess is, for lack of encoders, does this mean these are stepper motors, and that the CNC4 was an open loop system?
What am I going to need for motor drivers, power supplies, etc.
Powering up the transformer in the CNC4 gives 46.6 DC volts, and each axis card has a 8amp bus fuse fed by the transformer. Would I be right in assuming that that 46.6 DC volts represents the motor voltage and that the 8amp fuses the motor amperage?
Then there’s the rotation unit count. Connecting 2 of the motor wires results in a ratcheting. One rotation results in 60 of these ratcheting steps. Does that equate to the number of stepper motor rotational steps?
I’m cherry to this CNC stuff, and would really appreciate any wisdom and experience that anyone could offer.
The YCM-40 came with an old Centroid CNC4-B24-MD3, with what I believe are NEMA 42 29 in/lb DC, SEM motors. These have 4 wires plus a ground coming from each motor, and respective connections on each axis card / board of the CNC 4. Unfortunately, someone has painted the machine, and the motor labels are gone. First question I guess is, for lack of encoders, does this mean these are stepper motors, and that the CNC4 was an open loop system?
What am I going to need for motor drivers, power supplies, etc.
Powering up the transformer in the CNC4 gives 46.6 DC volts, and each axis card has a 8amp bus fuse fed by the transformer. Would I be right in assuming that that 46.6 DC volts represents the motor voltage and that the 8amp fuses the motor amperage?
Then there’s the rotation unit count. Connecting 2 of the motor wires results in a ratcheting. One rotation results in 60 of these ratcheting steps. Does that equate to the number of stepper motor rotational steps?
I’m cherry to this CNC stuff, and would really appreciate any wisdom and experience that anyone could offer.