S21N1 es un controlador de lotes con un panel frontal de policarbonato de 72×144 mm que incluye 2 pantallas num\u00e9ricas LED rojo de 5 d\u00edgitos de alto brillo, 7 LED que designan el estado de funcionamiento, 6 teclas para la programaci\u00f3n del dispositivo y el comando del ciclo de dosificaci\u00f3n. El dispositivo tiene 3 entradas digitales de control (marcha, parada, reinicio) y 1 entrada de sensor de pulso como contacto libre, contacto red, colector abierto NPN\/PNP BJT, sensor NAMUR, sensor de efecto Hall o sensor fotoel\u00e9ctrico (frecuencia m\u00e1xima 2,2 kHz) . Dos son salidas digitales de rel\u00e9 SPDT (5 A, 250 V, carga resistiva). S21N1 est\u00e1 disponible en versiones est\u00e1ndar, Ex, IP65. A diferencia del modelo S20, el S21N1 tambi\u00e9n est\u00e1 equipado con reloj y memoria flash y puede gestionar la transici\u00f3n del horario de verano al horario de invierno y viceversa.<\/p>\n","protected":false},"excerpt":{"rendered":"
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