{"product_id":"1756-of8k-controllogix-conformal-coated-8-channel-analog-output-module-allen-bradley","title":"1756-OF8K ControlLogix Conformal Coated 8-Channel Analog Output Module | Allen Bradley","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen Bradley 1756-OF8K serves as a high-density, chassis-based analog output module within the ControlLogix ecosystem. It provides eight high-resolution channels to drive field devices such as control valves, high-speed actuators, and variable frequency drives (VFDs). The \"K\" designation signifies a factory-applied conformal coating, which safeguards the internal circuitry against moisture, salt spray, and corrosive chemical vapors. This module bridges the gap between digital control logic and precise physical actuation in the most demanding industrial environments.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetailed Specification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1756-OF8K\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eControlLogix\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 Voltage or Current Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Voltage Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-10 V to +10 V DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOutput Current Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 20 mA; 4 to 20 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e15 Bits\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Resolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e320 µV per bit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Resolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e650 nA per bit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSettling Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 ms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e250 V (Continuous)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEnvironmental Protection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eConformal Coated (K-Series)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCorrosion Resistance via Conformal Coating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1756-OF8K features a specialized protective film (Conformal Coating). This barrier prevents \"tin whiskers\" and PCB corrosion in wastewater treatment, oil and gas, and chemical processing facilities where corrosive gases like\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$H_2S$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"math-inline\"\u003e$Cl_2$\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003etypically degrade standard electronics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Speed Control Loop Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA settling time of just 2 ms ensures rapid signal response. This minimizes lag in critical PID loops, allowing the controller to maintain precise setpoints during high-speed machine transitions or volatile process fluctuations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Actuation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e15-bit resolution provides granular control over field devices. In voltage mode, the module delivers increments as fine as 320 µV, while current mode offers 650 nA per bit, eliminating stepped movements in modulated control valves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Drive Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module drives current loads up to 750 Ω and voltage loads greater than 2000 Ω. This high drive strength enables long cable runs between the control chassis and the field device without sacrificing signal accuracy or integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhanced Electrical Safety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e250 V isolation protects the sensitive ControlLogix backplane and other chassis modules from electrical noise and ground loops originating in the field. This isolation maintains system uptime by localizing electrical faults to the individual module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 1756-OF8K provided as Brand New?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We supply this module as 100% Brand New in original factory-sealed packaging. This guarantees the integrity of the conformal coating and ensures the hardware contains the latest manufacturing revisions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the 1756-OF8K to replace a standard 1756-OF8?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 1756-OF8K is fully backward compatible with the 1756-OF8. The \"K\" version offers superior environmental protection but shares the same technical performance and software configuration in Studio 5000.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat Removable Terminal Block (RTB) does this module require?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1756-OF8K requires a 20-position RTB. We recommend the 1756-TBNH (Cage Clamp) or 1756-TBSH (Spring Clamp) for secure field wiring. Note that RTBs are typically sold separately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module require external power for the outputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module draws power from the ControlLogix backplane but requires a field-side power supply for the analog loops. Verify your chassis power supply capacity (MOD Power) during system design to accommodate the 5.8 W maximum consumption.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52870120472885,"sku":"1756-OF8K","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1756-OF8I_70c58a01-03ba-4234-b81f-2a7565583032.jpg?v=1778653363","url":"https:\/\/www.5gplc.com\/products\/1756-of8k-controllogix-conformal-coated-8-channel-analog-output-module-allen-bradley","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}