UEBERWACHUNGSEINRICHTUNG FÜR EINE ANTRIEBSSTEUERUNG FÜR AUFZÜGE

摘要

The monitoring equipment (1) monitors the ac or dc operated safety circuit (4) which is provided with contacts (7). The monitoring equipment consists of a safety circuit sensor system (2) and a motor and/or brake operating circuit (3) and employs exclusively electronic components. The supply frequency of ac operated safety devices has to be different from that of the power supply, e.g., 200 Hz.