Control different dc-motors with PCI-7358 and two MID-7654

[Cyk]

Hello,

I’m a engineering student at the technical university of Braunschweig in Germany. Within my diploma thesis I have the task to realize a motor control. I’m new in motion control an so my question is maybe quite simple.
For the motion I have 4 several types of brushed Pittman dc-servo motors (all in all 7 Motors) of the Pittman gear motor series GM8000 and GM9000 with the following technical specs:

Pittman GM8722:

Reference Voltage: 12 V

Resistance: 3,1 Ω
Inductance: 1,57 mH
No-Load Current: 0,25 A

Pittman GM8722:

Reference Voltage: 24 V
Resistance: 12,1 Ω
Inductance: 6,27 mH
No-Load Current: 0,12 A Pittman GM8723: Reference Voltage: 12 V
Resistance: 2,17 Ω
Inductance: 1,17 mH
No-Load Current: 0,27 A Pittman GM9433: Reference Voltage: 12 V
Resistance: 1,08 Ω
Inductance: 0,84 mH
No-Load Current: 0,3 A

My Question is now, is it possible to control these motors with the NI motion controller unit NI PCI-7358 in conjunction with two servo motor power drives NI MID-7654?

Thanks for any help that you can provide!

_______________________________

Christoph Boese

Technical University of Braunschweig
Institute for Microtechnology (IMT)

[Marco_Brauner]

Hello Christoph,

if you look inside the datasheet of your GM8xx2 or GM8xx3, you can see the Peak Currents mentioned
by the manufacturer. The MID-7654 delivers 5 A per Axis so u can just compare if it´s sufficient or not.

Hope this helps you


regards

Marco Brauner NIG

[Marco_Brauner]

sorry I forgot,

Yes u can use the PCI-7358 as the controller for the DC-Motors


Marco

[Cyk]

Hello,

Ok thank you! That’s with the controller sounds really good but I still have the problem with the power drive for the dc-motors.

In the datasheet I found the peak current for each motor. They are all between 1,99A for the 24 V GM8722 and 11,1A for the GM9433. The peak output current of the MID-7654 is in comparison with the datasheet 10A per axis.

Is it correct? And does it work with my motor, if I don’t need the whole torque the GM9433 can deliver?

The second thing I’m still a little bit afraid of is the output voltage of the MID-7654.

My question is here: are the 48V too high for my 12V and 24V dc-motors?
Don’t they rotate too fast because of the higher voltage?
Can I limit the voltage of the MID-7654 or instead of the voltage the rotation speed with the PCI-7358? Many thanks for any help!

_____________________

Christoph Boese
Technical University of Braunschweig
Institute for Microtechnology (IMT)