05-18-2011 10:50 AM
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
05-19-2011 07:08 PM
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.
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!
03-13-2017 05:20 AM
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
03-14-2017 01:04 PM
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.
04-20-2017 04:27 PM
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
04-21-2017 10:29 AM
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