During summer I'm going to build an useful device for our theater. Our Cinemeccanica V5 and our endless Kinoton platter are wires so that it is impossibile, in case of failure, know where is the problem. We have just a generic "alarm" condition.

Since we are experiencing some strange problems (the projector stops without reason) I would like to have all the sensor's cable passing throw some relais that, when the failure happens, stop the projector AND light a led. So that every fault can be traced.

Can someone help me on Cinemeccanica V5? Where are all the possibile alarm's wires in the projector?

Is it possibile that something with the lamp circuitry has some problem or that lamp switch off during projection.

Suggestions, ideas?

The wiring for *just* the V5 (at least for the USA market) seems very simple; there's not much to wire to. If I was doing this for myself, I would need to get the wiring drawings (schematics) for the projector, the lamp, the automation and the platter. I would look at how it all should work, then design something to show individual problems. Do you have all the wiring drawings?

A temporary way to trace the problem might be this: rather than design circuits with relays, how about simply buying small regular lamps, and wire them in various places in the projector and automation? For example; connect a lamp across the motor contacts and see if it is on the next time the motor stops. That will tell you the motor is getting power, but the motor's thermal protection device is what shuts off the motor. Connect another lamp across the coil of the relay the makes the motor run. Then you know if the automation is what stopping the motor.