Connecting a bipolar motor to my pegasus UPBv2

Ultimate Powerbox v1 and v2
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hoxca
Posts: 3
Joined: Sun Jan 10, 2021 12:47 am

Connecting a bipolar motor to my pegasus UPBv2

Post by hoxca »

Hello,

I'm trying to get a bipolar motor working with my UPBv2 without success...
But i really want to replace the current motor controller and use the UPBv2 one.

The motor is a 4 wires one so i guess that it's bipolar one (https://www.teleskop-express.de/shop/pr ... =6775#desc).
I check the 2 coils using the multimeter and made a custom cable connecting a DB9 to a RJ45.

According to what i read on the UPBv2 documentation
DB9 1 2 3 4 connected to RJ45 3 4 5 6
I've skipped the 12v wire as i don't have it on the motor.
I hear some noise but the motor shaft is not rotating.

When i reduce the speed to 20, i got a strong vibration...
Does the bipolar need a more complex driver as it need to reverse polarity ?
Is there a specific software configuration switch to use a bipolar motor.

Could you help me figure out the problem ?
--
Regards,

HoxCa
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Evans
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Re: Connecting a bipolar motor to my pegasus UPBv2

Post by Evans »

The pinout is correct. Bipolar does not require a unique 12V pin so you are good.
UPBv2 can drive unipolar and bipolar motors.
Try to set max speed to 400. 20 is too low.
TotallyFred
Posts: 10
Joined: Sat Apr 03, 2021 9:07 pm

Re: Connecting a bipolar motor to my pegasus UPBv2

Post by TotallyFred »

If the cabling is correct, the motor probably draws too much current and the driver can’t drive it. Check the motor spec.
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