INT-04 Series

Sentrol Industrial INT-04-024 or INT-04-120 Safety Relay is intended for use as a part of a safety circuit in emergency-stop of safety floor mat sensing applications. It is a safety relay which used positive-guided relays, configured for self-checking, to inhibit machine start-up in the event of an internal component failure. The INT-04 Relay can also monitor contracts on external relays for controlling expansion block relays (INT-05 and INT-06). Both contacts on E-stop buttons are monitored to ensure both have opened and closed to allow machine restart. Multiple contacts can be wired in series. Upon failure of either contact, the relay will prevent restart. The INT-04 monitors both loops of a safety floor mat. The safety outputs of the INT-04 turn off when an operator steps on the mat. The relay incorporates loop break detection to turn off if one of the loops breaks or becomes disconnected.

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