{"product_id":"allen-bradley-1746-im4-4-channel-240v-ac-input-module","title":"Allen-Bradley 1746-IM4 4-Channel 240V AC Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1746-IM4 is a high-performance discrete AC input module designed for integration with the SLC 500 programmable logic controller (PLC) platform. This module features four (4) independent input channels rated for 200\/240V AC operation. It is specifically engineered to interface high-voltage field devices, such as limit switches, pushbuttons, and motor starter contacts, directly into the SLC 500 system, making it an ideal solution for industrial environments utilizing 230V or 240V control standards.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFour discrete AC input channels for high-voltage monitoring.\u003c\/li\u003e\n\u003cli\u003eElectro-optical isolation rated at 1500V AC to protect the backplane and processor from field-side surges.\u003c\/li\u003e\n\u003cli\u003eHardware-based signal filtering with 35 ms (ON) and 45 ms (OFF) delays to mitigate electrical noise and mechanical contact bounce.\u003c\/li\u003e\n\u003cli\u003eLow backplane power consumption (35 mA at 5V DC).\u003c\/li\u003e\n\u003cli\u003eRobust design suitable for operation in temperatures ranging from 0 to 60 degC.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eThe 1746-IM4 is widely used in industrial automation systems where high-voltage AC signals must be monitored by a PLC. Common applications include machine control, conveyor systems, and process monitoring where 240V AC field devices are standard.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e200\/240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e170–265V AC (47–63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Current\u003c\/td\u003e\n\u003ctd\u003e12 mA @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Off-State Voltage\u003c\/td\u003e\n\u003ctd\u003e50V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Off-State Current\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Inrush Current\u003c\/td\u003e\n\u003ctd\u003e1.6 Amps (500 us duration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V DC)\u003c\/td\u003e\n\u003ctd\u003e0.035 Amps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Heat Dissipation\u003c\/td\u003e\n\u003ctd\u003e1.6W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Down:\u003c\/strong\u003e Always remove power from the SLC 500 chassis before inserting or removing the module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Placement:\u003c\/strong\u003e The module can be installed in any I\/O slot of an SLC 500 chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Use appropriate wire gauges and ensure all terminal connections are secure. Route high-voltage AC wiring away from low-voltage DC or communication cables to minimize EMI.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Ensure the chassis is properly grounded in accordance with local electrical codes and Allen-Bradley installation manuals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironment:\u003c\/strong\u003e Maintain adequate ventilation within the enclosure to ensure ambient temperature remains within the 0 to 60 degC range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch3\u003eWhat is the primary function of the 1746-IM4?\u003c\/h3\u003e\n\u003cp\u003eThe 1746-IM4 serves as an interface module that converts 240V AC field signals into logic-level signals compatible with the SLC 500 PLC processor.\u003c\/p\u003e\n\u003ch3\u003eDoes this module require 24V DC power from the backplane?\u003c\/h3\u003e\n\u003cp\u003eNo, the 1746-IM4 draws 0 mA from the 24V DC backplane supply; it only requires 35 mA from the 5V DC supply.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50733970161916,"sku":"1746-IM4","price":73.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_bf86ab50-f775-47cc-a5cf-25010554a5a9.jpg?v=1785290929","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-1746-im4-4-channel-240v-ac-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}