{"product_id":"siemens-6es7221-1bh32-0xb0-simatic-s7-1200-digital-input-module","title":"Siemens 6ES7221-1BH32-0XB0 SIMATIC S7-1200 Digital Input Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eWhen reliable digital input acquisition is critical, the \u003cstrong\u003eSiemens 6ES7221-1BH32-0XB0\u003c\/strong\u003e delivers robust performance. This SIMATIC S7-1200 SM 1221 module provides 16 digital inputs at 24 V DC, configured as sink\/source. Engineered for industrial environments, the Siemens 6ES7221-1BH32-0XB0 offers parameterizable input delays and diagnostic capabilities, ensuring minimal downtime and long-term cost efficiency.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type Designation\u003c\/td\u003e\n\u003ctd\u003eSM 1221, DI 16x24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Supply Voltage (DC)\u003c\/td\u003e\n\u003ctd\u003e24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20.4 V – 28.8 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current from Backplane Bus\u003c\/td\u003e\n\u003ctd\u003e5 V DC, max. 130 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Digital Inputs\u003c\/td\u003e\n\u003ctd\u003e16 (in groups of 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Characteristic Curve\u003c\/td\u003e\n\u003ctd\u003eIEC 61131, Type 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Input Voltage (DC)\u003c\/td\u003e\n\u003ctd\u003e24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal '0' Voltage\/Current\u003c\/td\u003e\n\u003ctd\u003e5 V DC at 1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal '1' Voltage\/Current\u003c\/td\u003e\n\u003ctd\u003e15 V DC at 2.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay (Parameterizable)\u003c\/td\u003e\n\u003ctd\u003e0.2 ms to 12.8 ms (selectable in groups of four)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Loss (Typical)\u003c\/td\u003e\n\u003ctd\u003e2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n\u003ctd\u003e45 mm x 100 mm x 75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 210 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of Protection\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThese parameters, drawn directly from the Siemens 6ES7221-1BH32-0XB0 datasheet, enable precise integration into automation architectures.\u003c\/p\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eSiemens 6ES7221-1BH32-0XB0\u003c\/strong\u003e excels in applications requiring high-density digital input acquisition. Common use cases include packaging machinery, conveyor systems, and material handling where 24 V DC sensor signals must be reliably captured. Its ability to handle up to 16 simultaneous inputs (up to 40 °C) supports scalable machine designs. The parameterizable input delays allow optimization for diverse sensor types, reducing false triggering and improving process reliability—directly supporting a lower total cost of ownership.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the Siemens 6ES7221-1BH32-0XB0 on a standard DIN rail within an S7-1200 system. Connect the front connector (required) according to wiring diagrams for sink\/source configurations. Use shielded cables up to 500 m or unshielded up to 300 m. Ensure the supply voltage remains within 20.4 V to 28.8 V DC. The module's IP20 rating requires installation in a protected cabinet. No special tools are needed for installation.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eTo maximize ROI, periodically inspect the \u003cstrong\u003eSiemens 6ES7221-1BH32-0XB0\u003c\/strong\u003e for loose connections and environmental factors. The module operates reliably from -20 °C to 60 °C and withstands storage temperatures from -40 °C to 70 °C. With diagnostic alarms and status LEDs, maintenance staff can quickly identify input faults, minimizing downtime. The plastic enclosure ensures durability in standard industrial environments.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Siemens 6ES7221-1BH32-0XB0, verify compatibility with your SIMATIC S7-1200 controller and confirm the required number of input groups. No additional accessories are mandatory beyond the front connector (included in scope). For a reliable source of genuine Siemens 6ES7221-1BH32-0XB0 modules, consider ordering from \u003cstrong\u003ePLC Source PRO\u003c\/strong\u003e (available at ubest101.myshopify.com) to ensure authentic parts and competitive pricing.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default","offer_id":44410378190947,"sku":"6ES7221-1BH32-0XB0","price":234.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/6ES7221-1BH32-0XB0.jpg?v=1785176364","url":"https:\/\/www.plcsourcepro.com\/products\/siemens-6es7221-1bh32-0xb0-simatic-s7-1200-digital-input-module","provider":"PLC Source PRO","version":"1.0","type":"link"}