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Author Topic: Gaugemaster PM1 point motor help  (Read 333 times)

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Offline Lew

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Gaugemaster PM1 point motor help
« on: October 19, 2017, 06:39:05 pm »
Hi there,

I've been trying to get my head around the Gaugemaster PM1 point motors, I've wired one up on the bench to a Graham Farish AGW PE860 DC power supply directly into the terminals and followed the wiring diagram with the negative going back to the power unit and the two outer going to a switch with a positive in the middle.. there is some resistance in the seep motor but it doesnt move a mm.



Its the same for 3 motor's i've wired. Can anyone see if im doing something stupid or im wondering if the power supply hasnt got the beans?

 ???

Thanks in anticipation,

Lew

Offline bluedepot

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Re: Gaugemaster PM1 point motor help
« Reply #1 on: October 19, 2017, 07:45:49 pm »
couldn't really see video v well as taken contact lenses out now... but I just wondered if you had a cdu though? 

tim

Offline terrysoham

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Re: Gaugemaster PM1 point motor help
« Reply #2 on: October 19, 2017, 08:25:48 pm »
You really need to buy a capacitor discharge unit (cdu for short).  This stores the power needed to “fire” the point and lets it go in a quick burst.
You can get away with using a power supply unit but unless it can provide at least 18 to 20 volts I doubt that it will move the solenoid.
Your wiring and use of the switch appear to be ok  in your video so I suspect that your power supply is not man enough to move the solenoid.
Terry Metcalfe
Ely and District Model Railway Club
Owner of Neely, modern N scale representation of Ely, available for exhibitions

Offline Lew

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Re: Gaugemaster PM1 point motor help
« Reply #3 on: October 19, 2017, 08:27:17 pm »
Thankyou both for your help.. will get one and try again!

Lew

Offline stevewalker

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Re: Gaugemaster PM1 point motor help
« Reply #4 on: October 19, 2017, 08:30:31 pm »
My SEEPs wouldn't work on 12V dc, worked okayish on a 16V ac auxiliary output (but not when operating in pairs) and fired solidly every go when I used a CDU fed from the 16V ac (so outputting a solid 22.5V pulse).

Offline Lew

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Re: Gaugemaster PM1 point motor help
« Reply #5 on: October 19, 2017, 08:32:50 pm »
Thanks Steve, On that basis can you recommend a power supply to use for accessories etc?

Offline stevewalker

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Re: Gaugemaster PM1 point motor help
« Reply #6 on: October 19, 2017, 09:10:55 pm »
Sorry, no. I'm still getting things set up and am temporarily just using the auxiliary AC output from a Gaugemaster Model D to power a Gaugemaster CDU. The Model D will eventually go as I get DCC set up, so I'll probably just buy a 16V transformer and a ventilated case to put it in.

Offline terrysoham

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Re: Gaugemaster PM1 point motor help
« Reply #7 on: October 20, 2017, 07:53:08 am »
A power supply unit for a computer is likely to be your best bet.  You need one that can give you at least 20 volts dc (although I use one giving 19.5 vdc on Neely successfully).   Note contrary to some retailers’ advice it does not have to be ac.  You can use ac if you wish with a psu giving about 16vac but these might be harder to find and almost certainly more expensive than a computer psu.
Try EBay or Amazon for a computer type psu.
Terry Metcalfe
Ely and District Model Railway Club
Owner of Neely, modern N scale representation of Ely, available for exhibitions

Offline Malc

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Re: Gaugemaster PM1 point motor help
« Reply #8 on: October 20, 2017, 03:22:16 pm »
On my previous layout I used a CDU with a 16v transformer from Gaugemaster. Just a bare transformer, so fitted it into a wooden box.
http://www.gaugemaster.com/item_details.asp?code=GMC-T1&style=main&strType=&Mcode=Gaugemaster+T1
« Last Edit: October 20, 2017, 04:22:54 pm by Malc »
I'm not sure if life is passing me by, or trying to run me over.

Offline Lew

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Re: Gaugemaster PM1 point motor help
« Reply #9 on: October 21, 2017, 05:41:30 pm »
Thanks everyone for the help - my CDU's arrived today and all is working as it should.


 

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