{"product_id":"siemens-6es7421-1bl01-0aa0-s7-400-sm-421-32di-24v","title":"Siemens 6ES7421-1BL01-0AA0 SIMATIC S7-400 SM 421 32DI 24V DC Digital Input PLC I\/O Module","description":"\u003cp\u003eThe Siemens 6ES7421-1BL01-0AA0 is a SIMATIC S7-400 digital input module SM 421 with 32 isolated inputs rated 24 V DC, IEC 61131 Type 1 characteristic. It draws 20 mA from the backplane bus, dissipates 6 W typical, and isolates the 32 channels from the backplane bus and from each other in one group.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrder Number\u003c\/td\u003e\n\u003ctd\u003e6ES7421-1BL01-0AA0\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\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage for Signal 0\u003c\/td\u003e\n\u003ctd\u003e-30 V DC to +5 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage for Signal 1\u003c\/td\u003e\n\u003ctd\u003e13 V DC to 30 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\u003e7 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\u003e1.2-4.8 ms \/ 1.2-4.8 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. 1.5 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 32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Test Voltage\u003c\/td\u003e\n\u003ctd\u003e500 V AC \/ 707 V DC, type test\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\u003e20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Loss, typ.\u003c\/td\u003e\n\u003ctd\u003e6 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\u003e0.77 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eAll 32 channels share a single isolation group, so this variant fits applications where the field-side 24 V DC supply is common across the whole module rather than segmented by group. The Type 1 IEC 61131 characteristic and 1.2-4.8 ms input delay match standard 24 V sensors and switches; where field devices run on 120 V AC\/DC instead, the 120 V-rated SM 421 in the same family is the correct module, not this 24 V version.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960589639963,"sku":"6ES7421-1BL01-0AA0","price":563.34,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7421-1bl01-0aa0-s7-400-sm-421-32di-24v.png?v=1789782152","url":"https:\/\/stoklink.com\/products\/siemens-6es7421-1bl01-0aa0-s7-400-sm-421-32di-24v","provider":"Stoklink","version":"1.0","type":"link"}