{"product_id":"1756-if8i-allen-bradley-controllogix-analog-input-module","title":"1756-IF8I Allen-Bradley ControlLogix Analog Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-IF8I\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-IF8I\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for high-resolution analog signal acquisition within ControlLogix system platforms.\u003c\/p\u003e\n\u003ch3\u003eModule Variant Identification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Part Number:\u003c\/strong\u003e 1756-IF8I\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries Architecture:\u003c\/strong\u003e ControlLogix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Function:\u003c\/strong\u003e Isolated 8-Channel Analog Voltage\/Current Input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTariff Classification Code:\u003c\/strong\u003e 8537101190\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOperational Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003e1756-IF8I\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\u003e0.35 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e23.3 x 18.2 x 5.3 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e8 channels, individually isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Ranges\u003c\/td\u003e\n\u003ctd\u003e-10 to 10 V, 0 to 10 V, 0 to 5 V, 0 to 20 mA\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\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16 to 21 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1 VDC)\u003c\/td\u003e\n\u003ctd\u003e200 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw (24 VDC)\u003c\/td\u003e\n\u003ctd\u003e150 mA or 400 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type\u003c\/td\u003e\n\u003ctd\u003eOpen-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Integration \u0026amp; Deterministic Network Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1756-IF8I utilizes an internal Sigma-Delta converter to execute analog-to-digital signal conversions with 16 to 21 bits of resolution across high-density channel configurations. Channel-to-channel galvanic isolation prevents ground loop interference across individual loops. Configured inside the standard ControlLogix chassis backplane, the module maintains firmware flash compatibility and supports high backplane bus communication velocity across EtherNet\/IP deterministic networks, delivering stable real-time process variable data directly to the controller without signal crosstalk.\u003c\/p\u003e\n\u003ch3\u003eKit Contents \u0026amp; Packaging\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 1756-IF8I Analog Input Module\u003c\/li\u003e\n\u003cli\u003e1 x Factory Product Documentation insert\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify chassis power is off or adhere to hot-swap safety protocols prior to insertion.\u003c\/li\u003e\n\u003cli\u003eAlign the module housing with the top and bottom chassis guide rails of the target slot.\u003c\/li\u003e\n\u003cli\u003eSlide the unit inward until the top and bottom locking latches fully secure into the backplane.\u003c\/li\u003e\n\u003cli\u003eWire field instrumentation signals to the corresponding Removable Terminal Block (RTB) using shielded twisted-pair cabling.\u003c\/li\u003e\n\u003cli\u003eConnect cable drain wires to the designated chassis ground bus to prevent EMI corruption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Clarifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the 1756-IF8I support mixed voltage and current inputs simultaneously?\u003c\/p\u003e\n\u003cp\u003eYes. Each of the 8 isolated channels can be independently configured in software for voltage (-10 to 10 V, 0 to 10 V, 0 to 5 V) or current (0 to 20 mA) operating modes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat conversion methodology does this module utilize for analog measurements?\u003c\/p\u003e\n\u003cp\u003eThe module utilizes an onboard Sigma-Delta conversion method to achieve selectable measurement resolution ranging between 16 bits and 21 bits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow much backplane current does the 1756-IF8I draw at 5.1 VDC?\u003c\/p\u003e\n\u003cp\u003eThe module draws exactly 200 mA from the 5.1 VDC ControlLogix chassis backplane bus rail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat are the 24 VDC power requirement options for this input card?\u003c\/p\u003e\n\u003cp\u003eDepending on operating conditions and loop power loading, current draw on the 24 VDC backplane supply is rated at either 150 mA or 400 mA.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes each channel require a separate ground isolation path?\u003c\/p\u003e\n\u003cp\u003eYes. The 8 input channels are individually isolated, preventing common-mode voltage differences between loops from degrading input measurement accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the mechanical enclosure rating for the 1756-IF8I module?\u003c\/p\u003e\n\u003cp\u003eThe module features an open-style enclosure design intended for direct installation inside a protective industrial control cabinet or NEMA-rated panel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat type of field connector attaches to the front of the 1756-IF8I?\u003c\/p\u003e\n\u003cp\u003eThe module connects to field wiring using a compatible 1756 ControlLogix Removable Terminal Block (RTB), such as the 1756-TBCH or 1756-TBS6H.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAre the channel ranges user-selectable in Studio 5000 logix designer software?\u003c\/p\u003e\n\u003cp\u003eYes. Each channel range (-10 to 10 V, 0 to 10 V, 0 to 5 V, or 0 to 20 mA) is software-configurable within the module properties dialog.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066414452909,"sku":"1756-IF8I","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-if8i_1.jpg?v=1787192356","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1756-if8i-allen-bradley-controllogix-analog-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}