Safety Relay Modules
EP Editorial Staff | November 14, 2019
Dold UH6932 speed monitor relay modules have two PNP or NPN sensor inputs and two N.O. positively driven and two semiconductor monitoring outputs.
The Dold UH6937 frequency-monitoring relay modules require no external sensors and provide two N.O. positively driven and two semiconductor outputs for monitoring. The relays provide overspeed, under speed, and/or standstill detection for single- or three-phase motors by monitoring either external proximity sensors mounted on a rotating element of the motor or load, the frequency of the motor power signal, or the remanence voltage (back EMF) of the motor signal.