{"product_id":"allen-bradley-1738-ib4m12-digital-input-modules","title":"Allen Bradley 1738-IB4M12 Digital Input Modules","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1738-IB4M12\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1738-IB4M12\u003c\/strong\u003e DC Input Module, operates as a dedicated hardware component for 24 VDC discrete signal ingestion and field device monitoring within Allen-Bradley ArmorPoint I\/O platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1738-IB4M12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.00 lbs (0.91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e120 mm x 72 mm x 42 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 60 deg C (-4 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e75 mA max @ 5 VDC (PointBus power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003e4 non-isolated sinking inputs (1 group of 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eM12 (Micro)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal On-State Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Off-State Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal On-State Current\u003c\/td\u003e\n\u003ctd\u003e4 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Power Bus Voltage\u003c\/td\u003e\n\u003ctd\u003e10 to 28.8 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V RMS continuous (1250 VAC RMS for 60 s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003e0.5 ms hardware + 0 to 63 ms selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP 67, Sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Ethernet\/IP Networks and I\/O Density Scaling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtherNet\/IP Deterministic Networks:\u003c\/strong\u003e Transfers discrete input state transitions over the PointBus backplane to ArmorPoint network adapters, executing real-time cyclic polling without deterministic latency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling:\u003c\/strong\u003e Integrates four sinking input channels using standard M12 micro connections, maximizing local channel density in IP 67 washdown environments without secondary enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility:\u003c\/strong\u003e Supports synchronized execution profiles and hardware diagnostics through status LED indicators for module, network, and channel conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the PointBus backplane current draw for the 1738-IB4M12 module? A: The module draws a maximum backplane current of 75 mA at 5 VDC from the PointBus power supply.\u003c\/p\u003e\n\u003cp\u003eQ: What input filtering configuration is available on the 1738-IB4M12 input channels? A: The hardware enforces a fixed 0.5 ms hardware delay, supplemented by a user-configurable software filter delay ranging from 0 to 63 ms.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1738-IB4M12 require a protective external enclosure for wet environments? A: No, the module features a sealed IP 67 housing designed for direct machine mounting in industrial environments.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecure the sealed unit directly to machine structures using provided mounting hardware, ensuring flush seating against the mounting surface to maintain IP 67 integrity.\u003c\/li\u003e\n\u003cli\u003eTorque M12 micro cable connectors onto the module receptacles to hand-tight torque specifications to guarantee fluid sealing and prevent moisture intrusion.\u003c\/li\u003e\n\u003cli\u003eMaintain separate routing paths for sensor signal cables away from high-voltage AC conductors to reduce electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eVerify field supply power remains within the 10 to 28.8 VDC window prior to connecting input circuits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45327720579187,"sku":"1738-IB4M12","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-08-07_10-10-27_1200x1200_4bdde427-5186-4a25-bbbd-85651cc380e0.jpg?v=1786068747","url":"https:\/\/www.dcssupplier.com\/ar\/products\/allen-bradley-1738-ib4m12-digital-input-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}