{"product_id":"siemens-6es7421-1fh20-0aa0-s7-400-sm-421-16di-230v","title":"Siemens 6ES7421-1FH20-0AA0 SIMATIC S7-400 SM 421 16DI 120\/230V AC\/DC Digital Input PLC I\/O Module","description":"\u003cp\u003eThe Siemens 6ES7421-1FH20-0AA0 is a SIMATIC S7-400 digital input module SM 421 with 16 isolated inputs rated 120\/230 V AC\/DC, IEC 61131 Type 2 characteristic. It draws 80 mA from the backplane bus, dissipates 12 W typical, and isolates the 16 channels from the backplane bus in groups of 4.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrder Number\u003c\/td\u003e\n\u003ctd\u003e6ES7421-1FH20-0AA0\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\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Characteristic (IEC 61131)\u003c\/td\u003e\n\u003ctd\u003eType 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120\/230 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\u003e0-40 V AC; -40 to +40 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage for Signal 1\u003c\/td\u003e\n\u003ctd\u003e74-264 V AC; 80-264 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\u003e10 mA (120V: 10mA AC\/1.8mA DC; 230V: 14mA AC\/2mA DC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay, 0 to 1 \/ 1 to 0, max.\u003c\/td\u003e\n\u003ctd\u003e20 ms \/ 30 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. 5 mA quiescent current (AC)\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 4\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\u003e80 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Loss, typ.\u003c\/td\u003e\n\u003ctd\u003e12 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\u003e0.776 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eSelection Notes\u003c\/h2\u003e\u003cp\u003eHalf the channel count of the 32 DI SM 421 modules trades density for a wider rated voltage window (120\/230 V AC\/DC) and finer isolation grouping (4 channels per group versus 8 or 32 on the other SM 421 variants), which suits mixed 120 V\/230 V field wiring on the same module. The Type 2 IEC 61131 characteristic and 264 V max signal-1 rating fit high-voltage discrete field devices directly; for pure 24 V DC or 120 V DC\/AC wiring at higher channel density, the 32 DI SM 421 variants in the same family are the better fit.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":53960590721307,"sku":"6ES7421-1FH20-0AA0","price":623.25,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/7722\/4475\/files\/siemens-6es7421-1fh20-0aa0-s7-400-sm-421-16di-230v.png?v=1789782164","url":"https:\/\/stoklink.com\/products\/siemens-6es7421-1fh20-0aa0-s7-400-sm-421-16di-230v","provider":"Stoklink","version":"1.0","type":"link"}