{"product_id":"allen-bradley-1756-on8-controllogix-ac-digital-output-module","title":"Allen-Bradley 1756-ON8 ControlLogix AC Digital Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-ON8\u003c\/strong\u003e is a ControlLogix chassis-based AC digital output module designed for switching low-voltage AC industrial loads. Operating across a range of 10-30 V AC, it provides 8 triac outputs arranged in two individually isolated groups of 4 points. The module is well-suited for controlling low-voltage AC solenoids, indicators, and small contactor coils within standard ControlLogix automation architectures.\u003c\/p\u003e\n\u003ch3\u003eFunctional Operation and Output Configuration\u003c\/h3\u003e\n\u003cp\u003eThe module uses solid-state triac switching outputs designed for low-voltage AC circuits operating between 47 Hz and 63 Hz. Output points are configured into two separate groups (4 channels per group), enabling distinct field-side AC supply connections or phase isolation between groups.\u003c\/p\u003e\n\u003cp\u003eEach channel supports up to 2 A continuous load current at maximum operating temperature (60 deg C). System integrators must manage total chassis thermal dissipation, as the entire module current capacity is rated at 5 A at 30 deg C and derated to 4 A at 60 deg C.\u003c\/p\u003e\n\u003ch3\u003eSystem Integration and Wiring Accessories\u003c\/h3\u003e\n\u003cp\u003eThe 1756-ON8 mounts directly into any slot of a standard ControlLogix 1756 chassis. It communicates across the backplane using producer\/consumer technology, broadcasting output state information and diagnostic data without polling overhead.\u003c\/p\u003e\n\u003cp\u003eField connections require a dedicated 20-pin Removable Terminal Block (RTB) or a pre-wired 1492 Interface Module (IFM) cable assembly. RTBs are available in both cage-clamp (1756-TBNH) and spring-clamp (1756-TBSH) terminal styles and must be ordered separately.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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-ON8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eAC Digital Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 points (4 points per group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Category\u003c\/td\u003e\n\u003ctd\u003e24 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-30 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd\u003e47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating per Point\u003c\/td\u003e\n\u003ctd\u003e2 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating per Module\u003c\/td\u003e\n\u003ctd\u003e5 A at 30 deg C, 4 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e200 mA at 5.1 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Backplane Power\u003c\/td\u003e\n\u003ctd\u003e1.07 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (Max)\u003c\/td\u003e\n\u003ctd\u003e5.1 W at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.39 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\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\u003ctr\u003e\n\u003ctd\u003eCompatible RTBs\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH, 1756-TBSH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C (-40 to 185 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5-95% noncondensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.23 kg (0.50 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1756-ON8 module be used to switch 120 V AC loads? A: No, the 1756-ON8 is designed specifically for low-voltage AC applications with an operating range of 10-30 V AC. For 120 V AC switching applications, a standard 120 V AC output module such as the 1756-OA8 or 1756-OA16 should be selected instead.\u003c\/p\u003e\n\u003cp\u003eQ: Are the removable terminal blocks (RTBs) supplied with the module? A: No, removable terminal blocks such as the 1756-TBNH (cage clamp) or 1756-TBSH (spring clamp) are not included with the module and must be purchased separately.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":67106501197939,"sku":"1756-ON8","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1756-OW16I_1__Cocoai.jpg?v=1793780556","url":"https:\/\/www.dcssupplier.com\/ar\/products\/allen-bradley-1756-on8-controllogix-ac-digital-output-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}