{"product_id":"siemens-6es7421-1el00-0aa0-s7-400-sm-421-32di-120v","title":"Siemens 6ES7421-1EL00-0AA0 SIMATIC S7-400 SM 421 32DI 120V AC\/DC Digital Input PLC I\/O Module","description":"\u003cp\u003eThe Siemens 6ES7421-1EL00-0AA0 is a SIMATIC S7-400 digital input module SM 421 with 32 isolated inputs rated 120 V AC\/DC, IEC 61131 Type 1 characteristic. It draws 200 mA from the backplane bus, dissipates 6.5 W typical, and isolates the 32 channels from the backplane bus in groups of 8.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrder Number\u003c\/td\u003e\n\u003ctd\u003e6ES7421-1EL00-0AA0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSIMATIC S7-400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Designation\u003c\/td\u003e\n\u003ctd\u003eSM 421\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Digital Inputs\u003c\/td\u003e\n\u003ctd\u003e32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Characteristic (IEC 61131)\u003c\/td\u003e\n\u003ctd\u003eType 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120 V AC\/DC, 47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage for Signal 0\u003c\/td\u003e\n\u003ctd\u003e0 to 20 V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage for Signal 1\u003c\/td\u003e\n\u003ctd\u003e79-132 V AC; 80-132 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current for Signal 1, typ.\u003c\/td\u003e\n\u003ctd\u003e2 mA (2-5 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay, 0 to 1 \/ 1 to 0\u003c\/td\u003e\n\u003ctd\u003e5-25 ms \/ 5-25 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length, Shielded \/ Unshielded, max.\u003c\/td\u003e\n\u003ctd\u003e1,000 m \/ 600 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-Wire Sensor Connection\u003c\/td\u003e\n\u003ctd\u003eYes, max. 1 mA quiescent current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotential Separation Between Channels\u003c\/td\u003e\n\u003ctd\u003eYes, in groups of 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Test Voltage\u003c\/td\u003e\n\u003ctd\u003e1,500 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current from Backplane Bus 5V DC, max.\u003c\/td\u003e\n\u003ctd\u003e200 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Loss, typ.\u003c\/td\u003e\n\u003ctd\u003e6.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e25 mm x 290 mm x 210 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.773 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eGrouping isolation in blocks of 8 rather than a single 32-channel group lets separate 120 V field circuits share this module without cross-loading each other's return path, which the 24 V SM 421 variant (isolated as one group of 32) does not offer. The 120 V AC\/DC rating and 79-132 V signal-1 window fit legacy 120 V field wiring directly; for 24 V DC sensors, the 24 V-rated SM 421 in the same family is the correct module.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960589836571,"sku":"6ES7421-1EL00-0AA0","price":1129.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7421-1el00-0aa0-s7-400-sm-421-32di-120v.png?v=1789782158","url":"https:\/\/stoklink.com\/products\/siemens-6es7421-1el00-0aa0-s7-400-sm-421-32di-120v","provider":"Stoklink","version":"1.0","type":"link"}