Using a CW230 Bi-polar driver with the UMI-7764 and 7330 PCI. But clock level is loaded below 2v and motor will not run?

[VG1110]

I have my stepper driver connected to the +step and aogrnd terminals on the UMI-7764. With the driver connected to these terminals the output across the two is 2vp. When I disconnect the driver, the level returns to a 5vp signal. My drivers inputs are optically isolated so I suspect the impedance my be higher than TTL can drive. Is there any way to manually set the output parameters of the 7330 Motion controller?

Thx...Vic 

[Kristen_K.]

Hi Vic,

Take a look at this KnowledgeBase:  How Do I get the 73xx Controller and UMI-7764 to Drive a Third Party Stepper Motor?

I think it may have the solution to your problem.  Also, here is another KnowledgeBase that is relavent:

Why Do I have to Supply Power to my UMI-7764?

I don't believe there is a way to manually set the output parameters of the 7330, but I don't think this is the source of the problem.  If the KnowledgeBase articles are not the solution, post back and we'll keep troubleshooting!

Kristen H.