Picked this up from eBay, at the time I didn’t really have anything to work with is distribution board, as it will require a Chronopher as the Master Clock to drive the board. Andy Sims was kind enough to advise here. Is it a 60 seconds alternate polarity salves or 30 seconds. And would have to have the right Chronopher for your panel. 60 sec or 30 sec.
I have yet to determine if this is a 60 or 30 secs system! Any advise would be most welcome.
I was told by the seller it was installed in the old building of Birmingham Hospital but have no paperwork to suggest this.
Simon
Andy Sims
Simon .
It’s a very interesting board. You could test a clock with a 24V DC supply .quickly apply a supply then reverse the supply and check if the clock advances half a segment or one whole segment. That would tell you if it’s 30 sec or 60 sec. The board appears very over complicated ,if it does what we think it does just drive slave clocks. What I find strange is 2 sets of Switch controls for each circuit. On a clock circuit it’s not normal to be able to advance + or – the clocks.
The other thing is why is there a package of weights inside . That would indicate a traditional master clock was used and not a Chronopher. More likely the weights don’t belong to the system. As it’s got lots of electronic parts that’s easy damaged or could already be faulty I would try and make a circuit diagram first. I appreciate that’s a not a easy task. It’s possible the panel could In fact work at a higher voltage . Possibly 48Volt AC . The clue is wire wound resistors and plenty of diodes. Again I might not be correct and I wouldn’t recommend trying without being sure..
This might not be much help but it’s a nice board and a big challenge. Andy