New P3/2 upgrade problem

Sounds like the daughter board effective voltage/current to the bulb circuit must be lower.  I haven't fully studied the top board yet.

Are you using the latest flash software for Steam.  G

It might have something to do with Rule 17 lighting for PS3, where the headlight is dimmed (lower voltage) when the engine isn't moving forward.

Try activating the relay with the engine moving forward, when the light bulb circuit has full voltage. If that works, you may be able to resolve the issue with a lower voltage relay.

Yes I am using the latest software.  I was thinking along the same lines as you as to voltage output, but not sure if it is something I can adapt to or need MTH to make an adjustment.

Interesting thought Barry, I will try that on Tuesday as the shop is closed on Mondays.  Thanks for the idea!

Why not use one of the other outputs, markers, ditch lights, etc?  Many sound files have the ability to at least turn some of these outputs on and off, even those that don't actually have the matching lights.  Ditch light outputs are used for number boards in some cases.

Because it is a PS-32 upgrade and you only get one control wire over.  The question is can any of the outputs drive it.

I have to go check on the next PS-32 repair I do, but I can't remember the headlight having rule 17, but I am not sure.

I know the firmware on the boards came with the diesel matrix, and you had to load the new steam file, otherwise headlights were directional.   G

Why dont you just use the board already in the engine?  I still have not figured why people want to turn off lights.  I have a few locomotives and have never had the desire to turn off lights for any reason.  Why are you using a relay?  I think the rule 17 is crazy.

 to do what you are doing.

Marty, I think what is nice and why some want it done, is that if a unit is parked powered it won't have lights lite unless addressed and turned on.

If it is a simple engine with just headlights and markers, I will connect the markers with the headlight so they don't come on until started.

The higher end Premier with cab light, number boards and fire box require the CV board.  Or you have to see if you can fit the PS-2 board in the engine.  Which I have done for premier upgrades.   G

If that is what someone wants, that is OK.  If I want to park and engine without lights, I hit shutdown.  I have never had that request doing upgrades.   I have done a few.   People can have what makes them happy and enjoy.

I would use a lower value relay to make what he wants work.  I hope Brian keeps us posted on the outcome.  BTW, the voltage output is 6V  to the headlight on the 3/2 board.

This is a premier Nickel Plate Berk.  The engine CV board runs a headlight, Mars light, markers, firebox glow and cab interior.  Shutting down the engine without the relay would leave all lights on the CV board on except the headlight, unless you park it on an unpowered track.  Thought about putting the PS 32 boards in the engine, little bit to tight.  Will run a couple of tests tomorrow, will let you know what happens.

Here's a 3V relay with a 6ma coil, it should be easily supported by the headlight circuit.

I'd give this a try with a 330 ohm resistor, should do the trick.  If it still doesn't close, reduce the size of the resistor to perhaps 180-220 ohms.

Okay, got to play with the Berk today.  The headlight, either in neutral or moving would not activate the relay.  Tried different light outputs off the P32 stacker board (interior, ditch. number boards) fed into the relay, no difference.  Tried the same outputs from a PS2 board and relay worked every time.

Mth R&D advised me to try:

1.  Find a relay that is more sensitive (i.e. will pull the contacts shut with less current)
2.  Find a relay with a lower coil voltage, say, <6VDC

They advised the PWM duty cycle is slightly different from the PS2 board.

Looks like gunnerjohns last option might be the way to go.  Will keep you advised of anything new.

That was the purpose of the very low coil current.  Truthfully, you may have to do something like use a transistor or FET to minimize the current required to trigger your relay.

No rule 17 on PS-32 with a 3V sound file loaded.   G