{"product_id":"allen-bradley-1756-if6cis-controllogix-analog-input-module","title":"Allen-Bradley 1756-IF6CIS ControlLogix Analog Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IF6CIS ControlLogix Analog Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IF6CIS\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IF6CIS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAnalog Input Module, operates as a dedicated hardware component for acquisition of 0…20 mA sourcing current loop signals within ControlLogix backplane I\/O structures. The module provides 6 individually isolated input channels with sigma-delta conversion and fixed 16-bit resolution processing.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\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\u003e1756-IF6CIS\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\u003e0.79 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e1.3 in x 6.0 in x 5.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5.1 W (max at 60 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e6 isolated current sourcing channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Range\u003c\/td\u003e\n\u003ctd\u003e0…20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16 bits (0.34 uA\/bit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConversion Method\u003c\/td\u003e\n\u003ctd\u003eSigma-Delta\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eInteger (2's complement), IEEE 32-bit floating point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e250 mA at 5 VDC, 275 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel isolated current loops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH \/ 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eControlLogix chassis mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Current Sourcing Loop Architecture\u003c\/h3\u003e\n\u003cp\u003eThe module implements independent current sourcing per channel, where each input loop is electrically isolated and driven through internal sourcing circuitry. This configuration allows direct interface with passive field transmitters requiring excitation from the module side rather than external loop power supplies.\u003c\/p\u003e\n\u003cp\u003eSigma-delta conversion is used to sample low-level current variations across all six channels, with digital filtering applied prior to backplane data transfer. Each channel maintains a fixed 0.34 uA\/bit quantization step within the 0…20 mA range.\u003c\/p\u003e\n\u003cp\u003eBackplane loading is distributed across 5 VDC logic rail (250 mA) and 24 VDC field interface rail (275 mA), with total module dissipation limited to 5.1 W under maximum thermal condition.\u003c\/p\u003e\n\u003cp\u003eChannel isolation prevents inter-loop current coupling during mixed load conditions, preserving measurement separation under multi-transmitter configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can all six channels operate simultaneously in sourcing mode?\u003cbr\u003eA: Yes, all 6 channels operate independently with dedicated sourcing circuits and no shared current path.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module require external loop power supplies?\u003cbr\u003eA: No external loop supply is required for passive devices; current sourcing is provided per channel by the module.\u003c\/p\u003e\n\u003cp\u003eQ: What happens to resolution under high filtering settings?\u003cbr\u003eA: Sigma-delta conversion resolution remains fixed at 16-bit, while effective update rate is reduced by digital filtering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eThe module must be installed into a ControlLogix chassis with proper backplane alignment to avoid connector stress. Terminal blocks (1756-TBCH \/ 1756-TBS6H) must be fully seated prior to energizing field loops.\u003c\/p\u003e\n\u003cp\u003eShielded current loop wiring is required for all 0…20 mA channels. Shields should be terminated at a single chassis ground reference to avoid loop-induced measurement drift.\u003c\/p\u003e\n\u003cp\u003eSeparation between sourcing loop wiring and high-voltage conductors must be maintained to preserve channel isolation integrity during operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43601662836826,"sku":"1756-IF6CIS","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IF6CIS2.jpg?v=1783310311","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-if6cis-controllogix-analog-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}