Paullampit Paull
Hiya
ive installed a number of the IP digital points successfully

one point which I decentered and gave an address to has been working perfectly well until tonight 

I ran a loco across the point and got a short circuit -this was unusual as the frog polarity had been working fine-because I thought it was a frog polarity issue I swapped the wires from the power bus

When I applied the point instruction from the nce hand controller there was no movement - I also tried from the computer interface on train controller - again no movement

all other points are working fine

i have applied a different power source and no movement

i replaced the wires from the power bus (only 30 cms long ) - still no movement

if I run a loco across the point still get a short circuit 

have checked the address and connection on the computer interface and it shows as ok but even in test mode there is no movement

I seem to be left with replacing the point motor which appears dead and  as you all know is an absolute pain

is there a reset procedure on the ip digital which might bring it back to life?

any suggestions/advice would be hugely appreciated 

regards

paul
Paull
n gauge British transition gwr
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MatthewP
Paul - have you tried re-addressing the point motor. This has happened to me, and I believe some others using iP Digital motors, where a short circuit causes the motor to "forget" its address. Worth a go, and much easier than replacing the motor!

Good luck

Matthew
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Paullampit Paull
Thanks - never occurred to me but there’s a lot of logic in what you say - won’t be back at the layout until this evening and I will try it then

thanks for your response

paul
Paull
n gauge British transition gwr
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MatthewP
When I had the problem it affected 12 motors all fed by the same power bus, so it became bit of a bore as happened more than once! If that is your problem, the remedy is either use a separate bus for the iP Digital motors, or protect each affected one by installing a small car light bulb in series with the fog feed. Mick at DCC can advise I'm sure.

Matthew
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Paullampit Paull
Hi matthew

thanks it worked
i am lucky in that the others on the same accessory bus were not affected
Historically i have 48 cobalt classics and therefore have never come across this before as they don’t have inbuilt decoders
thanks again for your help in solving what to me was becoming a serious issue

once again shows the value of a forum like this

cheers
paul
Paull
n gauge British transition gwr
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PatVP595
Hi,
I am having the same problem of my digital motors losing their settings. The bunch of 14 keep
loosing their settings. I have taken power for my motors off a separate bus from the track bus. The track
bus is protected by an EB1 and there is a snubber installed at the end of the power bus. This
problem is happening to one block. The other 3 blocks are working fine.
What else can I do so that the motors will not keep lose their settings?

Pat
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MatthewP
Pat - it's my understanding that the problem is caused by a short circuit, or repeated short circuits somehow affecting the iP Digital motors. The cure is either to ensure that the motors are powered from a separate protected power bus, so that any track short circuit is isolated from the point motor supply. If your DCC system doesn't provide separately protected power districts, you would need to fit an auxiliary short circuit protection - maybe that's what you mean by an EB1. Alternatively, you can protect each motor individually by wiring a car light bulb in series with the frog feed. In my case, very similar to yours, I was able to re-feed 9 of the affected motors with an independent protected supply, and I used the light bulb method for the remaining 3 motors. No problems since.

If you still have problems, I suggest you contact Mick at DCC Concepts who will be able to explain the solutions more competently than me!

All the best

Matthew
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PatVP595
Hi Matthew,

Thanks for the tip of the light bulb. The cobalt motors are on a dedicated bus separate from the track power bus
which is protected by an NCE EB1 set at 4 ohms at the start and with an NCE snubber at its end. I might not be
able to wire in a bulb but will try and include a resistor in the frog circuit. The problem will be of what value.

Thanks again

Pat 
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MatthewP
Pat - I've reached the limit of my technical knowledge on this subject I'm afraid! Best to talk to Mick or somebody at DCC Concepts, they are always very helpful

Kind regards

Matthew
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AHJAY
A resistor will NOT help and will cause problems in running as well.

You need to use an incandescent tail light bulb. They are pennies toi buy at any place that sells petrol or any car parts place. The bulb is an inductive load which acts to absorb the spikes generated by the DCC systems re-boot attempts.

regards, Ahjay
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PatVP595
Hi Ahjay,

Thanks for the clarification. I live in down under and will source these bulbs and light up my table in time for Christmas.

Yours

Pat 
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john whiteside
Hi  Pat
What NCE system are you using Please,
Would it be the Power cab with or without booster or the Pro cab,
John Whiteside
DCC Concepts
Technical / Customer support 
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PatVP595
Hi John
I am sorry that I have been busy and have not kept track of this thread.
I am using the Power Cab without a booster. I have three controls scattered
around for ease of reach and view of proceedings.
Hope this helps
Yours

Pat
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