@Dtrainmaster posted:From the beginning, my only goal was to solve the original problem that the OP (remember him?) presented. To be able to use more than one of these to control 2-aspect signals, or accessories requiring two powered positions (within the power limits of this device), without adding relays, etc.
The problem inherent in these is that using multiple 153 IRs to control the same signal cause it to change from GRN to GRN and RED when only one detector is activated. The modification enables signals to change from GRN to RED whenever any detector in the string is triggered.
This of course is exactly what is causing my newly added ROWI block signal to want to show green, even when the red is activated. One of the tandem 153IR's has tripped to close the NO contacts, but the other still has the NC contacts closed; thus green still powered. When a train passes it activates the first 153, then if it gets to the second 153 before the first times out, there is a brief time period when the green extinguishes. Might need to re-examine your suggested mod, or just add a local spdt relay to isolate the block signal.
I'm going to see if there is any popcorn left, and maybe a beer or two! (I think the new trailers are still coming up.)
Rod
