Need help identifying large bipolar stepper motors

[thatguy666]

Hello,
Can anyone help me identify these motors.
Sigma pacific scientific
Bipolar stepper motor 4 wire NEMA 34
Model number 21-3437d200-B038
phase resistance 0.5 ohms
phase inductance ~680 mh
Date code 8921
I have 3 of these and would really like to use these steppers for a cnc router. Thanks for any help you can provide.

[thatguy666]

I had to call target electronics and have someone look up the model in an old catalog from 1989.
Break down of model number
21-3437d200-B038
21 is the motor series
34 is the frame size NEMA 34
37 stands for 2 stack
d200 is the number of steps per revolution
B is a four wire motor
038 is the phase resistance

Modern model number is H32NRHA-LNN-NS-00

Phase current 5 Amps
Phase resistance 0.38 ohm
Phase inductance 0.38 mh I did fry my multimeter after all damn it
Holding torque 460 oz-in

I hope this helps someone.

[Rene Nuñez Paz]

Hello, Iam building a cnc embroidery machine, work is detailed here

DIY- CNC Embroidery Machine

I have three stepper motors, from Panasonic dot printers. I don’t have information about volts, amps and electrical wires connections.

Steppers are

1-PJJQ113ZA-P Matsu****a line feed motor
36 Omhs Japàn
Panasonic printer KXP1624.
7.5Deg/step
48 pasos/rev

2-PJJQ92ZB-P Line feed motor with brass gear
PANASONIC DOT PRINTER KX-P1124 line feed
Resistance (Ohms) 9.5
Wires 6
Steps / Revolution 48
Step Size (degrees) 7.5
Gear Diametrial pitch 50

3- PJJQ114ZA-K Kyushu Matsu****a electric Stepper with optical wheel & cog
Nominal Voltage 3.1
Resistance (Ohms) 3.4
Wires 6
Condition pulled
Steps / Revolution 200
Step Size (degrees) 1.8

I need to know if I can connect it in a CNC controller with a 33VDC power source.
I need to know amperes for these motors for set Vref in CNC controller.
I need to know about torque, to see if is enough for project.

Thanks in advance for any help than can give me.

Sorry my bad english

Regards
Rene

[kennyd]

I hope this helps someone.

Yes, it certainly helped me! I have three of these on a Bridgeport I recently acquired.
https://picasaweb.google.com/1139665...ridgeportPart2

Did you get your router built? If so what voltage are you running them at?

[thatguy666]

Hello,
My CNC is a work in progress. Perhaps in a few months I'll be done.
I believe I was running the motors at 40 volts.
I wouldn't mind having a Bridgeport in the meantime.

[kennyd]

Thanks for the reply, Any chance you can recall why the big difference in the specs you posted above? Particularly the mh numbers of ~680 and then 0.38

[thatguy666]

Yea, one of the inputs on my multimeter was fried by one of my friends.
The measurements in the second post should be correct. I can check them out later to confirm.

[kennyd]

Yea, one of the inputs on my multimeter was fried by one of my friends.
The measurements in the second post should be correct. I can check them out later to confirm.

That would be great...

Thanks

[thatguy666]

Alright.
I was finally able to get those measurements.
Phase inductance is really around 3.95 mh. No one notices an order of magnitude difference!

The phase resistance is ~0.4 ohm. I can't find my analog meter so I can't give you a more accurate measurement.

BTW the voltage isn't all that critical.
Cheers

[kennyd]

Thank you very much!

My system is running at 20 volts as recieved and that semms pretty low-just trying to get close to a better number to run the motor's at.

I also can't seem to get above 25 ipm very well...still learning

[hewittrj78218]