Motion Control and Motor Drives

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Connecting Parker Compax3 servo drive to umi-7774, and PCI-7340

Im very new to NI motion control products, and was wondering if anyone knew of the specific details for connecting a Parker Compax3 servo drive to the UMI-7774 and motion controller PCI-7340.  Any connection diagrams and software set-up would be very helpful

Thanks,

Scott

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Hey Scott,

 

I don't have any specific documentation for the Parker Compax3. The best I can do is give you links to the manuals for your hardware.

 

UMI-7774

PCI-7340

Parker Compax3

 

The pinout specifications for each device are there in the manuals, it should just be a matter of matching them up. If you have some more specific questions about getting them set up, I'd be happy to provide any assistance that I can. Have a great evening!

John B.
Embedded Networks R&D
National Instruments
Certified LabVIEW Developer
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I am trying to connect the UMI-7774 (previously connected to a PCI card 7334 within a PC with windows XP) to a gecko driver g203v, but I cannot manage to move a stepper motor.

 

I have tested the driver and the motor with the PWM signal from the PCI card and it worked, for frequencies from 4k to 33k of the PWM.

 

When I measure the output signal from the UMI device, I get 5 volts amplitude and a normal step signal, but when I connected to the Gecko driver the signal is 1.5 volts amplitude.

 

The Gecko driver requires a source configuration, whilst the output of the UMI device is sink open collector. I tried to connect the step signal directly to the driver but it did not work, then I connected the UMI ouput through a resistor to 5V source (sink configuration), but it didn´t work. 

 

Does anyone knows if the UMI device have to be connected only with NI motors drivers?

or can anyone advice how to solve the problem?

 

Best wishes,

Victor

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Hi Victor,

 

I noticed you posted on two different forums (http://forums.ni.com/t5/forums/v3_1/forumtopicpage/board-id/240/page/2/thread-id/6912). It may be best to create a whole new forum post that is specific to your device because the title on these two posts may be misleading.

 

However, the UMI-7774 should work for third-party drives. Could you clarify your setup a little more? Is it a 7334 to the UMI-7774 to the drive? I am a little unsure what setup you had working vs. what you have now.

Madison T
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Dear all,

I am using a PXI 7350 hardware to generate a PWM signal. The PXI is capable of generating this PWM signal by selecting parameters in the configuration VIs from the NI motion 73xx software.

 

There are a 14 frequencies that can be used. These are:

Clock Divider
Value
Clock
Value*
NI 7334/42/44
Clock Frequency
NI 7330/40
Clock Frequency
NI 7350
Clock Frequency
512 0 40.00 kHz 48.46 kHz 48.01 kHz
1K 1 20.00 kHz 24.23 kHz 24.00 kHz
2K 2 10.00 kHz 12.11 kHz 12.00 kHz
4K 3 5.00 kHz 6.06 kHz 6.00 kHz
8K 4 2.50 kHz 3.03 kHz 3.00 kHz
16K 5 1.25 kHz 1.51 kHz 1.50 kHz
33K 6 625.00 Hz 757.14 Hz 750.09 Hz
External Clock/256 Hz 7 External Clock/256 Hz External Clock/256 Hz External Clock/256 Hz
65K 8 312.50 Hz 378.57 Hz 375.05 Hz
131K 9 156.25 Hz 189.29 Hz 187.52 Hz
262K 10 78.13 Hz 94.64 Hz 93.76 Hz
524K 11 39.06 Hz 47.32 Hz 46.88 Hz
1048K 12 19.53 Hz 23.66 Hz 23.44 Hz
2097K 13 9.77 Hz 11.83 Hz 11.72 Hz
4194K 14 4.88 Hz 5.92 Hz 5.86 Hz
External Clock/ 32,768 Hz 15 External Clock/ 32,768 Hz External Clock/ 32,768 Hz External Clock/ 32,768 Hz
*  These clock value numbers are used for purposes of discussion only.

 

However, the 375.05 Hz and the ones below are exactly the same as the 48KHz and below, which results in a total of only 7 frequencies. I have tried these frequencies with the MAX software from Labview, and I am able to use the 14 frequencies from the PXI 7350 card. I have also use a PCI 7334 and I was able to use MAX and Labview to configure the PWM. 

 

Do you think that my PXI 7350 card might be damaged? 

Also, could you please let me know how to create a new forum post? 

 

Best wishes

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Hello Vick,

 

Since this does not relate to the original post, you would probably have better luck creating another post in the forums.

 

As for if the device is in need of repair or not, I would try to see if you can reproduce this behavior with different cables (if accessible) or a different computer.

 

Eric

Applications Engineer

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