SIDOOR functions3.4 Safety functionsATD4xxW Door Controller for Industrial ApplicationsSystem Manual, 01/2017, A5E38080677-AB 1013.4.2.10 Concept of fail-safe digital control (door OPEN/CLOSE) with emergency stop via 3digital inputsThis concept describes one implementation variant of the emergency stop function inaccordance with stop category 1 as specified in EN ISO 13850:2008, with fail-safe control (inaccordance with PLd) of door OPEN/CLOSE drive orders via 3 digital inputs.Safe motor shutdownSIDOOR controllers have an internal, cyclically tested and monitored second shutdown routeaccording to PLd. This ensures safe shutdown of the motor (emergency stop).The following figures show examples of safe OPEN/CLOSE door control (in accordance withPLd) with emergency stop in accordance with stop category 0 via 3 digital inputs viaredundant antivalent channel safeguarding.Figure 3-21 Interfacing safe (PLd) digital door control (OPEN/CLOSE) with emergency stop (encoder type 1) via 3 digitalinputsDoor commandsThe door command with the highest priority is STOP → ramp stop.The status following the ramp stop can be defined using the "special" door commandexpansion bit as either "source voltage brake activated" or "coasting down" (deenergized orno current). In the case of ATD401, the door command expansion bit is permanently set to"coasting down".
