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Old 13-07-2018, 06:50 PM   #1
ScottC
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Default Electrofrog Shorting

Hi all,

i've got a problem with shorting and I can't work it out... and it's driving me slowly round the twist!

I'm using Peco Code 75 Electrofrog points and have 3 linked together - A left-hand curve, in to a 3-way, in to a right-hand. I'm using seep point motors (PM1), but as the loco runs over the first point and straddles the join in the track between the isolated section, it's shorting. It's also doing the same when it runs over the 3-way points frogs.

I'm wondering if i've added the insulated rail joiners in the correct place - i've put a insulator joiner at every connection except the outer rail on each side. Each point has it's own set of power droppers as well as the sidings connected to them.

Any help is greatly appreciated!

Pic 1
Pic 2
Pic 3
Pic 4
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Last edited by ScottC; 13-07-2018 at 07:08 PM.
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Old 13-07-2018, 08:09 PM   #2
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Just a thought, sounds like the frog supply might be the wrong way around.
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Old 13-07-2018, 09:07 PM   #3
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Quote:
Originally Posted by Bunkerbarge View Post
Just a thought, sounds like the frog supply might be the wrong way around.
That's what I was thinking. Easy to check if you have a meter?
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Old 13-07-2018, 09:33 PM   #4
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A meter will be the easiest to determine the problem.
Assuming as you say, you have IRJs on every points Vee rail ends then...
Im fairly sure you have one or more point motor switches wired the wrong way around.
Without meter proceed as...... disconnect all point frog wires from all motors F terminals. Short should now not be present.
On the first point reconnect the frog wire to F and retest with loco. If no short move onto second point, but if a short swap around wires on D & E then retest. Assuming now its ok, move onto second point motor.
Reconnect its F wire and test... Is it OK? If so move onto third point. If it gives a short, swap wires on D & E. Retest. Assume now OK move onto third motor repeating reconnection of F and test as before. Repeat for all points.
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Old 13-07-2018, 09:52 PM   #5
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Thanks all. I'm heading back up the loft for an hour or so now it's cooler, so hopefully I can figure it out... i'll let you know!
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Old 17-07-2018, 05:53 PM   #6
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Quick update.

Disconnected everything and then connected things back in 1 by 1. I was using one of my J94s to test the points and all was going fine apart from one dead spot on one of the points, which is odd as the frog is being powered.

The main issue now is that when I ran my Class 158 over the points, it all shorted again, having bogies over different parts of the different points.

I suspect the Seep Point motors aren't switching properly. Which is another area i'm struggling with. With the motors in place I can manually switch the points no problem as there is plenty of clearance, but when I throw the switch to operate the motor electrically it just buzzes and doesn't move the point. If I unscrew the motor to test it, it works perfectly everytime!
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Old 17-07-2018, 06:13 PM   #7
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Point motors need to be lined up exactly, not a mm out either way.
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Old 17-07-2018, 06:25 PM   #8
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I believe you are operating in DCC? If so fit Gaugemaster autofrog modules rather than use the switch in the Seeps. They are fully automatic and quite inexpensive. I use them alongside my Seeps all the time. This also frees up the switch to use it with lights on a mimic board.
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Old 17-07-2018, 10:13 PM   #9
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Or look at the DCCConcepts range, either the IP motors for below the board or the new Cobaly SS for above the board. Both automatically change the polarity of the frog and, if the wrong way round, simply changing over two wires corrects it.
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