Signal bridge and sensors

After further discussions with the manufacturer, a different sensor won’t help.  The board is designed to be triggered by the sensor. It then runs through its preprogrammed sequence. And will trigger again if a train is still in the block when the light hits green.  So this board would work for short trains moving quickly.  It cannot work for longer, slower trains like what I run.  

Try.   www.azatrax.com.     I used their sensors for grade crossing lights. They have great instructions and work well. I drilled holes in my roadbed to mount the sensors. Not really noticeable and they work as advertised. Tedious to hook up. But the instructions are great. They have a setup for block signals.

Is the sensor, infra red?  They can be tricky depending on the light in your train room.

I had MTH scaletrax sensors.  They did the same thing you describe.  Then I used zstuff sensors and all worked well.

I don't understand why the sensor you have is unique to the bridge.  It's just telling a light to turn on and stay on as long as it sees a train.  When it stops seeing a train it should cycle yellow then green.

Ron

Ron thanks. The issue isn’t the sensor, it’s  the board.  It’s not designed to hold red until the train passes. Instead they only use the sensor as a trigger and then cheat using a time delay.  So I need a whole new board and sensor set up.

Dave C.  I’ll give that a look.