Hello everybody!
I have a couple of questions.
I have some steppers and I can't find the datasheet, even from the manufacturer. Maybe the motors are a little old (although mine are new).
The label says:
89.908.001
PAS STEP: 1.8° R: 0.7Ω
U/Ph: 1.68V
Crouzet
They looks like a NEMA23, but slightly different. The "front" is 56x56mm, 47x47mm between holes; depth is 40mm. The shaft is 19mm long, 6mm diameter. I am attaching a couple of pictures for reference.
[attachment 10224 stmotor.jpg]
[attachment 10225 motor_dimensions.jpg]
do anyone have any information on these motors?
The other thing is that they are 1.68V and 0.7 Ohms per coil, which would give 2.4A.
I think that 2.4A is a little too much for RAMPS+Pololu, so I was thinking if it's possible to add a 0.5 Ohm resistor in series with the motor winding,
to get something like this: 1.68V / (0.7R + 0.5R) = 1.4A
will this work?
I'm assuming that probably will lost some torque, but I think that these motors have more that enough.
Thanks,
Biomech
I have a couple of questions.
I have some steppers and I can't find the datasheet, even from the manufacturer. Maybe the motors are a little old (although mine are new).
The label says:
89.908.001
PAS STEP: 1.8° R: 0.7Ω
U/Ph: 1.68V
Crouzet
They looks like a NEMA23, but slightly different. The "front" is 56x56mm, 47x47mm between holes; depth is 40mm. The shaft is 19mm long, 6mm diameter. I am attaching a couple of pictures for reference.
[attachment 10224 stmotor.jpg]
[attachment 10225 motor_dimensions.jpg]
do anyone have any information on these motors?
The other thing is that they are 1.68V and 0.7 Ohms per coil, which would give 2.4A.
I think that 2.4A is a little too much for RAMPS+Pololu, so I was thinking if it's possible to add a 0.5 Ohm resistor in series with the motor winding,
to get something like this: 1.68V / (0.7R + 0.5R) = 1.4A
will this work?
I'm assuming that probably will lost some torque, but I think that these motors have more that enough.
Thanks,
Biomech