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Looking for an annunciated safety relay into which several devices can be input, and (depending on wiring) in addition to providing category 1 through 3 operation, will indicate what device caused the trip.
This thingamabob would have force guided relays, and other amenities of a 'standard' safety relay. Instead of monitoring only a single string of devices it would have multiple inputs (say, in groups of 4 or 8).
LED indicators or some other form of display would indicate which of the monitored devices caused the safety circuit to open up, or indicate if the trip was due to an internal problem (stuck FGR, etc.).
My particular application is a trimpress. This type of machine has cyclic shock loads, and, after time, safety switches in the (currently) traditional series e. stop string become intermittent in ways that aren't always easy to test.
It's kinda possible to do what I want using a whole slew of single safety relays (one for each device), but, at least in this application, way too expensive to consider.
Any thoughts?
This thingamabob would have force guided relays, and other amenities of a 'standard' safety relay. Instead of monitoring only a single string of devices it would have multiple inputs (say, in groups of 4 or 8).
LED indicators or some other form of display would indicate which of the monitored devices caused the safety circuit to open up, or indicate if the trip was due to an internal problem (stuck FGR, etc.).
My particular application is a trimpress. This type of machine has cyclic shock loads, and, after time, safety switches in the (currently) traditional series e. stop string become intermittent in ways that aren't always easy to test.
It's kinda possible to do what I want using a whole slew of single safety relays (one for each device), but, at least in this application, way too expensive to consider.
Any thoughts?