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Knowing why a drive blew is just as important as repairing it. Thanks for the pictures, they made it possible to hazard a guess.

Mariss

Joe,

Wow! I've never seen such a totally toasted G203V. What drew my attention is the hole in the big brown capacitor and the blue resistors (3rd pix, just to the left and below the top 4-40...

Mike,

Thanks, it simply proves what works on paper works in the real world.

You allowed 25mS, paper says 20mS before things fall apart. That extra 5mS is I guess what makes the difference. ...

Brady,

I really seriously sweat if someone is not happy with what we churn out. I really mean it we want to have happy customers. The G901 is a commodty; return them and there is an immediate...

Step Motor Drive Notes.

1) Motor heating:

A hot step motor is a step motor earning its keep.

Step motors are not as efficient in converting electrical power into mechanical power as...

About the G901s:

The G901s synthesize 10, 5, 2 or 1 internal step pulses for every pulse sent to it. This is done using a phase-locked loop circuit.

This circuit is not psychic though; it...

-B,

Have you considered returning the G901s for either refund or credit because they are unsuitable for your application? We do that all the time with our products.

Mariss

A couple of notes on the G202s:

1) The drive is rated at 80VDC, designed for 100VDC and comes apart at 114VDC to 116VDC. Every drive is tested at 7A and 100VDC while running the test-stand motor...