Hi Guys,

We are running a large club layout in Auckland New Zealand, we run five DCC Specialties PSX-1 circuit breakers.

We would like to get a trigger off the PSX circuit breakers to freeze our JMRI signalling system in case of a short. Are there terminals on the PSX that would provide a trigger for this? -------------- Thanks, Dave in Aukland

Dave:

Hi Dave,

Yes, there is a Block Shorted output on J4. The U6 component is a transistor output optical isolator. The output collector is J4-5 and the output emitter is J4-6. The transistor is ON when the block is shorted. This output will provide about 5mA and is suitable for driving a discrete digital logic input.