Shaw

Bill it says in the big manual not to set the CV and the jump lead. The CV value should be one, I now need to de activate on the PSX that excepted the cv. Like you say soldering the jumper is easy now I've done three. Let's see what happens!!!!

Thanks Bill, I have all the materials for that job. To un program cv49 on the circuit breaker that's accepted it do I set the value to 0?

Any idea if I can obtain the jumpers from a regular electronic shop. I am not based in the UK and delivery of supplies can be irregular. What is the technical term for them.

Yes John I think that may be the way to go as when programming cv49 on three of the boards it comes up that the power cab can't read the CV? On one of the boards (the original I programmed) the cab goes through the correct set up as expected. In all cases a loco runs on each individual track zone so information is getting there.

Back from the track. Each of the zones are isolated from each other. Having disconnected each of the four boards I have tested them separately. Two trip correctly and two cause the NCE cab to turn off. When tripping the correct lights come on. I hadn't programmed each individual board separately but I have now, the two are still causing all to trip and the power cab to turn off. Will re read instructions to make sure I'm going through the correct sequence when inputting cv49. Thanks for the help

Thanks Ian and Andrew I'll go and check but I'm sure it's all isolated and wired correctly. I will pull some wires and test each individual breaker as suggested.

My layout has four separate zones each isolated with Pico insolated rail joiners and each zone powered by its own bus cables through four PSX circuit breakers which are daisy chained across the top to a NCE power cab, each zones bus cables are connected from the exit terminal as per instructions. When a short occurs all four breakers trip? Can anyone suggest what I've done wrong!!!!as my understanding is that only the breaker in the zone of the short should trip.