Anybody Know how to wire this 12v slide motor??

Dreamscape · September 23, 2011, 07:40:56 AM

Doug bought a couple of these yesterday and we can't figure out how it's wired for in and out direction. I did a search and came up blank. With two wires coming out, one black, one red and two studs. Is one stud a ground? How do you wire it for forward and reverse?

luvrbus · September 23, 2011, 08:00:05 AM

Paul, it is in the switch it reveres the current ask Doug how many he needs I have some HWH F/R switches in a panel with the off and on and locks also George gave me a few years ago,if memory serves me red wire is out and black is in nether wire is grounded

good luck

wal1809 · September 23, 2011, 08:23:49 AM

RUT RO! Paul you slide plans in your near future?

Len Silva · September 23, 2011, 09:04:21 AM

That is a permanent magnet motor and it is reversed by reversing polarity, much like a power window in a car.

You can use a DPDT Center Off switch, preferably spring loaded in both directions to control it. A power window switch should work as well.

Jeremy · September 23, 2011, 09:08:07 AM

[Len beat me to it, but I'll post this anyway]

The type of switch you want is a 'double pole, double throw' type (six contacts) I had to wire one up some time ago for a project I built (a mechanism to move an LCD screen up and down). It took me ages to figure out how to wire the switch up, but my brain was probably being slow that day.

BTW - it's hard to judge the size of that slide mechanism in your photo - is it from a room-extension slide, or something smaller? If it is from a room-extension slide then I have really over-engineered mine.

Jeremy

Just Dallas · September 23, 2011, 09:35:35 AM

Paul, it'll never work, you don't have any Dilithium Crystals for it to reverse with. Send it to me and I'll be happy to dispose of it for you at just a small nominal charge.

No thanks needed, glad to do it for a friend!

Dreamscape · September 23, 2011, 10:54:49 AM

This is not mine, and it's not for slides. Doug has other plans for their use.

The unit is about 36" long. We are assuming they were for slides.

I'll let Doug know to check in on this thread and he can decide how to decipher the information.

wal1809 · September 23, 2011, 12:09:36 PM

Other than a slide the only reasons I can figure you should use one would be for a switch operated slide out with a beer cooler or a BBQ pit. Huh? What was I thinking? A combination beer cooler/BBQ pit system.

luvrbus · September 23, 2011, 12:23:16 PM

They are nice to have on a generator and the rear bed those look like 24 inch under the floor slides

good luck

Dreamscape · September 23, 2011, 01:51:01 PM

Clifford, You guessed correct on both applications!

Len Silva · September 23, 2011, 02:08:33 PM

That setup does not appear to have limit switches, which I would consider adding so that the motor cannot be powered up against a stall condition (unless they are built in already).

luvrbus · September 23, 2011, 02:33:12 PM

The limit switch is built into the motors Len

good luck

Dreamscape · September 23, 2011, 07:56:39 PM

Thanks all for helping me understand what we are dealing with. I think I'm closer to understanding how it works. I just need to wrap my head around the diagram below. The motor is not grounded, each wire lead feeds the direction of the motor, forward or reverse. Does the motor have two separate sets of magnets for direction? What am I missing? The motor will not work without this relay?

It was taken from this site.

http://texasindustrialelectric.com/relays_24450.asp

Jeremy · September 24, 2011, 02:28:36 AM

Why do you think that the motor won't work without that relay - has the motor manufacturer said that? If not, it just looks like an alternative (better for higher currents) way of reversing the polarity than doing it at the switch.

Regarding the ground - on DC components, ground is used as a common negative* connection for everything - which you can't have if you want to be able to reverse the polarity to one component. The motor doesn't need to have two sets of magnets (or field coils), one for each direction - as with any normal DC motor, if the polarity to the armature windings is reversed the motor will turn the other way.

Now a question from me:- if the limit switches are 'inside the motor', are there proper (and adjustable?) mechanical switches in there? There might be, but if they're inside the motor I'm not sure how these would be arranged to detect the limits of travel of the external ballscrew. Alternatively, is it possible that the built-in 'limit switches' are actually stall-sensing circuit somewhere - possibly inside the motor or maybe part of the original wiring harness or switch? I might be very tempted to adapt this slide mechanism into whatever device (generator slide etc) that I'm building, then, once I knew exactly where I wanted the 'in' and 'out' positions to be, fit my own brackets and limit switches in the appropriate places

Jeremy

*might be positive if the vehicle is from medieval times

Dreamscape · September 24, 2011, 03:59:30 AM

Jeremy, The reason I say that about the relay is this. We tried it from a charged 12v battery and could not get it to move at all. I know nothing about this permanent magnet motor, therefore the questions.