MID 7654

[ggenc]

Hello everybody,

I have been using MID-7654 for like 1.5years for now with the motion controller PCI-7358. I have encountered several problems and I now am controlling 4 different servo motors simultaneously. But today when I powered the system up, the motor connected to the 3rd axis of the MID-7654 wasn't responding to the commands. I opened MAX and saw that when I commanded any thing the motor wasn't moving at all, but the following error was increasing and the axis was killing itself. I tried to assign the axis 5-8 of motion controller to driver and again all axis except axe 3 was working.

Can there be sth wrong electrically inside the driver? Has anyone faced a similar problem? Is there a chance to overcome this problem changing the settings of the axis?

Thanks for all the responses in advance...

Gencer

[Jochen]

Gencer,

telling from the information that you have provided I suspect a hardware failure. There could be several issues like a defective drive, cable or motor. I don't think, that the issue is caused by the 7358. Otherwise axis 3 should have worked when switching to axes 5-8.

To find the cause of this issue please check systematically the components and try to identify the problem by swapping components if possible.You could also try to monitor the motor signals of the 7654 with a scope, but please be aware of the fact, that this is a 48 V PWM power signal.

I hope that helps,

Jochen

[ggenc]

Thank you Jochen,

First of all I've never opened a thread with an implicit header like this before but I think this time though I've changed the header the browser sent my query word as a header. I've already tried everything you've offered. I've tried different cables, different motors and also I've verified these components using other axis and they worked.

So as you suspected there would be a very great chance that the MID-7654 has an H/W failure. In that case what can I do, I will check my guarantee situation? Do you think it can be repiared or what?

thanks again...

Gencer

[Jochen · Accepted solution]

Gencer,

as this seems to be a hardware failure, please check with your local NI branch for the RMA procedure. In general we test the device and if it's broken and not in warranty anymore NI will send you a repair offer.

Jochen