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Underspeed Relay, underspeed relay,11rvl 8rvl, 11rvlmp, PULSE CONTINUITY relay,

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Simple 8 & 11 pin plug in underspeed relays suitable for all kinds of machinery to detect loss of speed and pulse continuity. These units are useful where an output contact is required to alarm on jamming, loss of speed due to blunt cutting tools or as a "stationary" contact to allow the release of machine guards. Applications also include being used as "watchdog" relays. 11RVL, 8RVL - The input is achieved from either a NAMUR proximity switch or from a clean contact. 11RVLMP - The input is achieved from either a NAMUR proximity switch, PNP sensor or from a clean contact. The 11RVLMP also benefits from a reset input by momentarily closing link S2 between pins 2 & 8. Note that the 8 second run up time will not be applicable and is only achieved by the connection and reconnection of the coil voltage.

UNDERSPEED OR PULSE CONTINUITY "WATCHDOG" RELAY 11RVL, 8RVL (spco) 11RVLMP (spco)
Underspeed Relay, PULSE CONTINUITY relay, underspeed relay, ywrvl, YWRVLS, YWRVLM, YWRVLL

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Din rail mounted underspeed relays suitable for all kinds of machinery to detect loss of speed and pulse continuity. These units are useful when an output contact is required to alarm on jamming, loss of speed due to blunt cutting tools or as a "stationary" contact to allow the release of machine guards. Applications also include being used as "watchdog" relays. The input is achieved from either a NAMUR proximity switch, PNP sensor or from a clean contact. The YWRVL also benefits from a reset input by momentarily closing link S2 between terminals Z1 & Z2.

UNDERSPEED OR PULSE CONTINUITY "WATCHDOG" RELAY ywrvl