Library for Building Automation Function Block Descriptions ... - Wago

Function Description:The function block Latching Relay with Feedback is identical to that of a toggle flipflop. The function block reacts on the switching signal at the “xSwitch“ input with achange over function. The input is protected by a debounce time of approx. 30msThe output signal “xActuator“ changes its value with every positive switching signalat the input.The function block can only be used if a feedback signal of the actuator is available.If the values of the output signal xAktor and the input signal “xFeedback“ differlonger than 1 second, the output signal will be set equal to the feedback input signal.A typical application is the control of an external actuator using several distributedsensors (see example below).The output signal can be switched via the input objects “xCentON“ or “xCentOFF“.Controller Sensor 1Actuator externalController Sensor 2Subject to design changes WAGO Kontakttechnik GmbH & Co. KG Postfach 2880 • D-32385 Minden Tel.: 05 71 / 8 87-0 E-Mail: info@wago.comCopyright © 2009 Hansastr. 27 • D-32423 Minden Fax.: 05 71 / 8 87-169 Web:http://www.wago.com48