How to change the polarity of 6 pins 24 V DC Motor?

[tinnyjay]

Hello!
Paper Exit Motor of Ricoh 2090 finisher must rotate clockwise to take the paper from inside the finisher to finisher trays,but after changing mainboard, the motor rotates counterclockwise and paper is missfed inside finisher.
The motor is a 6 pins 24 volts DC Motor and its possible to change the side of rotation,but i do not know which wires i must change to rotate clockwise.
Any experienced people can help me?

[teebee1234]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Not to be indelicate, but you're nuts. Go back to the mainboard (finisher or engine?) and double check you put in the right one and if there are any dip switches that need to be set for that particular model/finisher. What was the original problem that caused you to replace the board and what is the model of the finisher?

[tinnyjay]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Not to be indelicate, but you're nuts. Go back to the mainboard (finisher or engine?) and double check you put in the right one and if there are any dip switches that need to be set for that particular model/finisher. What was the original problem that caused you to replace the board and what is the model of the finisher?

Finisher is a B478 (without booklet)

I changed finisher mainboard because the old one didnt rotate motor (Motor E in the picture below) of shift positioning rollers even i changed it with a new one.
motor.jpg
So i changed finisher mainboard and paper exit motor is rotating counterclockwise.I checked the wires,the pins,changed motor,but still the same and no sc code is shown on the monitor.So i thought to change the motor polarity because i know this is possible in DC Motors.
Finisher is working because i made a small modification,connecting paper exit roller gear with another gear on finisher main motor,with a modificated belt and i will show you tomorrow a picture,but please do not laugh to me

[blackcat4866]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Theoretically ... sure. But it's not the best way to go IMHO.

Let me throw in a little background information:
A three pole pulse motor receives measured pulses, timed to make the armature rotate at a specific speed. Some of these motors monitor/adjust that speed, some just trust that it's at the right speed.
It's relatively rare to see a pulse motor fail. More commonly the gear reduction fails, or the motor control circuitry goes bonkers and starts sending pulses erratically.

If I were to offer odds I'd go with finisher controller 75%, wire harnesses and connectors 20%, pulse motor 3%, unknown 2%. =^..^=

[teebee1234]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Finisher is a B478 (without booklet)

I changed finisher mainboard because the old one didnt rotate motor (Motor E in the picture below) of shift positioning rollers even i changed it with a new one.
[ATTACH=CONFIG]16309[/ATTACH]
So i changed finisher mainboard and paper exit motor is rotating counterclockwise.I checked the wires,the pins,changed motor,but still the same and no sc code is shown on the monitor.So i thought to change the motor polarity because i know this is possible in DC Motors.
Finisher is working because i made a small modification,connecting paper exit roller gear with another gear on finisher main motor,with a modificated belt and i will show you tomorrow a picture,but please do not laugh to me

Well, I can't argue with you if it works but I would hope that you would eventually want to get it corrected and not have a Rube Goldberg contraption. Are all of the dip switches on the new mainboard set to 'off'?

PS- I'm looking forward to the picture(s)!

[tinnyjay]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Theoretically ... sure. But it's not the best way to go IMHO.

Let me throw in a little background information:
A three pole pulse motor receives measured pulses, timed to make the armature rotate at a specific speed. Some of these motors monitor/adjust that speed, some just trust that it's at the right speed.
It's relatively rare to see a pulse motor fail. More commonly the gear reduction fails, or the motor control circuitry goes bonkers and starts sending pulses erratically.

If I were to offer odds I'd go with finisher controller 75%, wire harnesses and connectors 20%, pulse motor 3%, unknown 2%. =^..^=

From 6 pins of motor,2 are for voltage and 4 are for signal and from 4 pins of signal,2 send signal to motor and 2 others send from motor to the board.
Just to clearify my problem.When motor is rotating i can change the side of rotation by fingers and finisher works perfectly,but this is not possible because only me can do that,not workers.And i dont have another mainboard.

[tinnyjay]

Re: How to change the polarity of 6 pins 24 V DC Motor?

Well, I can't argue with you if it works but I would hope that you would eventually want to get it corrected and not have a Rube Goldberg contraption. Are all of the dip switches on the new mainboard set to 'off'?

PS- I'm looking forward to the picture(s)!

Practically finisher works and i will see to enter Rube Goldberg competition,but it brakes theories of mecanics.
Lol



Dip switches are off.

[Shadow1]

Re: How to change the polarity of 6 pins 24 V DC Motor?

I've seen stepper motors rotate backwards if there's too much load on them. If you look at the theory of ops in Ricoh's core basics manual you can see how that will work - only the motor will rotate backwards at 3 times normal speed.

These motors will also start randomly in either direction if they are missing a phase - I know it's rare but look for a bad wiring harness.

Sometimes you can have a bad motor that blows the board, so your new board may be shot now and giving you the same symptom.

[jonezy999]

Re: How to change the polarity of 6 pins 24 V DC Motor?

This has got me thinking. Wondering if that motor runs correctly in output forward mode?

[tinnyjay]

Re: How to change the polarity of 6 pins 24 V DC Motor?

This is the photo i made my famous finisher
IMAG0436.jpg