Switching multi-safety circuits from one E-stop

摘要

A common problem confronting machine builders is the need to switch several safety circuits or different voltages with a single E-stop command. If the required number of safety contacts are not provided by the safety relay itself, then expansion modules must be added. These have to be physically wired to be activated from the safety relay, and to facilitate monitoring within its feedback loop - a costly and time-consuming procedure that also results in an overall loss of safety contacts.