{"product_id":"allen-bradley-1746sc-ini4i-isolated-analog-input-module","title":"Allen-Bradley 1746SC-INI4I Isolated Analog Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 1746SC-INI4I is a high-performance, 4-channel isolated analog input module engineered by Spectrum Controls for the Allen-Bradley SLC 500 platform. This module is specifically designed for industrial applications requiring high signal integrity in environments prone to electrical noise and ground loop interference. By providing channel-to-channel isolation, the 1746SC-INI4I ensures that surges or faults on one input loop remain isolated, protecting the integrity of the remaining channels and the host PLC system.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour (4) fully isolated, differential analog input channels.\u003c\/li\u003e\n\u003cli\u003e16-bit resolution for high-precision measurement of pressure, temperature, flow, and other process variables.\u003c\/li\u003e\n\u003cli\u003eChannel-to-channel isolation rated at 1500V DC to prevent ground loop issues.\u003c\/li\u003e\n\u003cli\u003eSelectable channel filtering to balance between high-speed updates and maximum noise rejection.\u003c\/li\u003e\n\u003cli\u003eSupports both voltage and current input signals on a per-channel basis.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is ideal for critical process control loops in industrial automation where electrical noise is a significant factor. It is commonly used in water treatment, chemical processing, and manufacturing facilities where sensors are located at varying distances from the PLC rack, necessitating robust isolation to maintain accurate control data.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSpectrum Controls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eIsolated Analog Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e4 (Differential and Isolated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e1500V DC (Channel-to-Channel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Rate\u003c\/td\u003e\n\u003ctd\u003e10 ms per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Impedance\u003c\/td\u003e\n\u003ctd\u003e1 M Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Impedance\u003c\/td\u003e\n\u003ctd\u003e250 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the SLC 500 chassis power is disconnected before installing or removing the module.\u003c\/li\u003e\n\u003cli\u003eUse shielded twisted-pair cabling for all analog inputs to minimize EMI\/RFI interference.\u003c\/li\u003e\n\u003cli\u003eProperly ground the cable shields at the source or the module end as per standard industrial grounding practices, avoiding ground loops.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the module to ensure proper ventilation and prevent overheating.\u003c\/li\u003e\n\u003cli\u003eHandle the module using ESD-safe procedures to prevent damage to sensitive internal components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary advantage of the 1746SC-INI4I over a standard analog input module?\u003c\/h3\u003e\u003cp\u003eThe primary advantage is the channel-to-channel isolation. Standard modules often share a common ground, which can lead to measurement errors or equipment damage in the presence of ground loops. This module isolates each channel at 1500V DC, ensuring superior protection and signal accuracy.\u003c\/p\u003e\u003ch3\u003eCan this module measure both voltage and current?\u003c\/h3\u003e\u003cp\u003eYes, the 1746SC-INI4I is designed to support both voltage and current inputs, providing flexibility for various sensor types within a single I\/O rack slot.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50743467507964,"sku":"1746SC-INI4I","price":57.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_68d70d48-469a-4654-92f6-6658865b77f8.jpg?v=1785472782","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-1746sc-ini4i-isolated-analog-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}