Third-party motor drive

[Ya-hoo]

I am using Baldor's controller and amplifier. Can I use Labview enviroment to communicate with the controller? The controller has serial port RS232/RS485 and CAN port. Is the speed enough for control?
If I use NI's controller and Baldor's amplifier, and use a UMI as an interface, does UMI accept 24V digital signal?
Any suggestion is very welcome.

Thanks,

[Buechsenschuetz]

There is no detailed documentation on the UMI's internal circuitry. But since it runs on 5VDC I have severe doubts that you can connect a 24V digital signal directly to the box - whether the digital I/Os are processed internally or (which is more probable) they are fed directly to the I/O pins of the 7344.

The circuitry of the I/O pins of the 7344 is not described in detail. But to avoid any damage to the 7344 you should limit your signals to +5VDC max. The best method to avoid any burn-outs of the 7344 in case any level converters will fail is to use optical isolation via optocouplers (+ recovery circuitry for the usually rather slow output signals of optocouplers). Also, the input signals must be tied to GND or have a voltage level of less than 0.8V (with r
eference to the GND pins of the 7344) so that a logical low signal can be properly detected.

[algames]

If you use NI's 73xx motion controller and a UMI-7774, this interface does take the 24 volt signals you need, you can then use the UMI to connect the 73xx to the baldor drive. Here is the link to the interface:

http://sine.ni.com/apps/we/nioc.vp?cid=12534〈=US