Author Topic: controlling current direction  (Read 4151 times)

Offline Hanshamsjel

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controlling current direction
« on: June 17, 2017, 06:27:41 PM »
Hi,
I would like to control the rotational direction of a Bosch servo motor (0 132 801 141). In order to do so, the supply and gnd pins have to be switched. It is called a servo, but is not really, since there is no internal position feedback. That is why the reversal happens externally, I guess.
I would like to do the control of the current direction on my MC050, an I was wondering if it would be possible, by connecting two MC output pins to the servo (+ and -), and then controlling the duty cycles of each output pin, to make current flow one way, or the other ?
My concern is if the output pin, when acting as ground, has to handle the current (max 0,5A)

Any thoughts, or ideas are most welcome.
Regards
Hans

Offline acmall

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Re: controlling current direction
« Reply #1 on: June 19, 2017, 09:06:39 AM »
Hi Hans

On the MC050 Pins 37 & 38 or 42 & 43 can be configured as H-Bridge. I have never needed the functionality so I don't know the particulars. There is a document called Output Configurations for PLUS+1 Controllers that can be downloaded from the Danfoss website that should help with setup.

Alastair