{"product_id":"allen-bradley-1756-oa8-controllogix-digital-ac-output-module","title":"Allen-Bradley 1756-OA8 ControlLogix Digital AC Output Module","description":"\u003cp\u003eThe \u003cstrong\u003e1756-OA8\u003c\/strong\u003e is an 8-channel discrete AC output module designed for the Allen-Bradley ControlLogix platform, featuring two independent groups of four outputs each. Operating across a voltage range of 74 to 265 VAC (nominal 120\/240 VAC), this module provides reliable switching control for industrial loads with flexible grouping options for separate AC supply levels.\u003c\/p\u003e\n\u003ch3\u003eModule Overview and Specifications\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-OA8\u003c\/strong\u003e module delivers dependable AC load control with dual-group architecture, enabling flexible integration into standard ControlLogix chassis and remote I\/O configurations.\u003c\/p\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-OA8\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\u003eSeries \/ Product Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital AC Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 discrete outputs (2 groups of 4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e74–265 VAC (47–63 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Output Voltage\u003c\/td\u003e\n\u003ctd\u003e120 \/ 240 VAC (50–60 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent per Point (Max)\u003c\/td\u003e\n\u003ctd\u003e0.5 A @ 60 °C (140 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent per Group (Max)\u003c\/td\u003e\n\u003ctd\u003e2 A @ 60 °C (140 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Current per Module (Max)\u003c\/td\u003e\n\u003ctd\u003e5 A @ 30 °C (86 °F) linear derating; 4 A @ 60 °C (140 °F) linear derating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Load Current per Point\u003c\/td\u003e\n\u003ctd\u003e10 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Current per Point\u003c\/td\u003e\n\u003ctd\u003e20 A for 43 ms (repeatable every 2 s at 60 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOFF-State Leakage Current\u003c\/td\u003e\n\u003ctd\u003e3 mA per point (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Delay Time\u003c\/td\u003e\n\u003ctd\u003e9.3 ms @ 60 Hz; 11 ms @ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e200 mA @ 5.1 VDC; 2 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation (Max)\u003c\/td\u003e\n\u003ctd\u003e5.1 W @ 60 °C (140 °F)\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\u003eCompatible Removable Terminal Blocks (RTB)\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH, 1756-TBSH, 1756-TBCH, 1756-TBSH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.50 lbs (0.68 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eGroup Architecture and Power Management\u003c\/h3\u003e\n\u003cp\u003eThe eight output channels are split into two independent I\/O groups (Group 0 and Group 1) with four points each. Because the terminal commons are not internally connected between groups, you can power each group with different AC voltage levels (for example, operating Group 0 at 120 VAC and Group 1 at 240 VAC), provided both fall within the 74 to 265 VAC operational threshold.\u003c\/p\u003e\n\u003ch3\u003eWiring and Chassis Compatibility\u003c\/h3\u003e\n\u003cp\u003eField wiring is terminated using compatible Removable Terminal Blocks such as the \u003cstrong\u003e1756-TBNH\u003c\/strong\u003e, \u003cstrong\u003e1756-TBSH\u003c\/strong\u003e, or \u003cstrong\u003e1756-TBCH\u003c\/strong\u003e. The modular RTB design allows wires to be terminated securely without wiring directly to the module itself, simplifying installation and hardware replacement. The module fits into a single slot of any standard ControlLogix chassis (such as 1756-A4, 1756-A7, 1756-A10, 1756-A13, or 1756-A17) in either local or distributed I\/O architectures.\u003c\/p\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: Can the two groups on the 1756-OA8 operate at different AC voltages simultaneously? A: Yes, because the two output groups feature separate terminal commons that are not internally connected, one group can operate at 120 VAC while the other operates at 240 VAC.\u003c\/p\u003e\n\u003cp\u003eQ: Are the output channels internally fused? A: No, the module does not include internal channel fusing. It is recommended to install external fuses matched to the continuous point current rating to protect field wiring and connected loads.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":53255957414168,"sku":"1756-OA8","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1756-OX8I_1__Cocoai.jpg?v=1794448125","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1756-oa8-controllogix-digital-ac-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}