{"product_id":"6es7421-7dh00-0ab0-simatic-s7-400-digital-input-sm-421","title":"6ES7421-7DH00-0AB0 SIMATIC S7-400 Digital Input SM 421","description":"\u003ch2\u003e\u003cstrong\u003e6ES7421-7DH00-0AB0 SIMATIC S7-400 Digital Input SM 421\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e Siemens SIMATIC S7-400, \u003cstrong\u003e6ES7421-7DH00-0AB0\u003c\/strong\u003e (SM 421).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e 16 digital inputs, isolated per channel (groups of 1).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e Rated UC 24 V to 60 V (AC\/DC, 47-63 Hz).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal \"0\" Range:\u003c\/strong\u003e -6 to +6 V DC \/ 0 to 5 V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal \"1\" Range:\u003c\/strong\u003e 15 to 72 V DC; -15 to -72 V DC; 15 to 60 V AC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Current (Signal \"1\"):\u003c\/strong\u003e Typ. 4 mA (4 to 10 mA).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Delay:\u003c\/strong\u003e Parameterizable (0.5 \/ 3 \/ 10 \/ 20 ms).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Loss:\u003c\/strong\u003e Typ. 8 W (3.5 W at 24 V DC; 6.5 W at 48 V DC; 8.0 W at 60 V DC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Current:\u003c\/strong\u003e Max. 150 mA at 5 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Length:\u003c\/strong\u003e Shielded up to 1000 m, unshielded up to 600 m.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Wire Sensor Support:\u003c\/strong\u003e Yes, max quiescent current 0.5 to 2 mA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire-Break Monitoring:\u003c\/strong\u003e Yes (I \u0026gt; 0.7 mA), with fixed current limitation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostics \u0026amp; Alarms:\u003c\/strong\u003e Yes, parameterizable diagnostic and hardware interrupts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation:\u003c\/strong\u003e Between channels (groups of 1) and backplane bus. Tested at 1500 V AC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What input voltage ranges does this module support?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003e6ES7421-7DH00-0AB0\u003c\/strong\u003e accepts UC 24 V to 60 V (AC\/DC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I parameterize the input delay?\u003c\/strong\u003e\u003cbr\u003eA: Yes, you can set the delay to 0.5, 3, 10, or 20 ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does this module support diagnostic alarms?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it provides parameterizable diagnostic and hardware interrupts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can I use 2-wire sensors with this module?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it supports 2-wire sensors with max 0.5 to 2 mA quiescent current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Are all channels isolated from each other?\u003c\/strong\u003e\u003cbr\u003eA: Yes, each channel has full isolation (groups of 1).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you have these in stock?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we have \u003cstrong\u003e6ES7421-7DH00-0AB0\u003c\/strong\u003e modules in stock ready to ship.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eContact Information:\u003c\/strong\u003e For inquiries, please email \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e or call \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e (WhatsApp).\u003c\/p\u003e\n\u003cp\u003ePartner: \u003ca href=\"https:\/\/www.nex-auto.com\/\" target=\"_blank\"\u003eNexAuto Technology Limited\u003c\/a\u003e\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46947192602785,"sku":"6ES7421-7DH00-0AB0","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/6ES7421-7DH00-0AB0.jpg?v=1788161551","url":"https:\/\/www.autonexcontrol.com\/products\/6es7421-7dh00-0ab0-simatic-s7-400-digital-input-sm-421","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}