Wago's Model 859-477 Triggered Timer Relay
Model 859-477 triggered timer relay supports E-stop circuitry in space-restricted panels. On E-Stop activation, the falling edge of a trigger signal initiates the relay's off-delay timer for sequential shutdown. The device's four adjustable, time-delay ranges enable a PLC to log the stopped position of all components to help provide smooth and efficient restart of intricate machinery. A 12-turn potentiometer augments two side-mount DIP switches that select time ranges of 0.5–2 s, 1.0–12.0 s, 5.0–90 s and 50 s to 12 min.