{"product_id":"1734-ob8s-allen-bradley-point-guard-i-o-8-point-24vdc-digital-safety-output-module","title":"1734-OB8S | Allen-Bradley POINT Guard I\/O | 8-Point 24VDC Digital Safety Output Module","description":"\u003ch2\u003e\u003cstrong\u003eModule Overview\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-reliability POINT Guard I\/O module designed for safety-critical applications within the Allen-Bradley (Rockwell Automation) ecosystem. Functioning as a specialized 8-point digital safety output module, it provides the deterministic control required for emergency stops, light curtains, and safety gate interlocks. When integrated into a GuardLogix or SmartGuard controller system via EtherNet\/IP or DeviceNet, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures that safety functions are executed with SIL 3, PLe, and Cat. 4 compliance. Its compact POINT I\/O form factor allows for localized safety control, reducing complex wiring runs to the main control cabinet.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDetailed Engineering Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis engineered to provide fail-safe switching of 24V DC field loads while continuously performing internal diagnostics to detect short circuits or ground faults.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePOINT Guard I\/O Safety Output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Output Points:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8 Points (Sourcing)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNominal Supply Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Voltage Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e19.2 to 28.8V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Output Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8.0A total per module (1.0A per point @ 40°C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.5 Watts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThermal Dissipation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e15.38 BTU\/hour\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Ratings:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSIL 3 (IEC 61508), PLe (ISO 13849-1), Category 4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Current Draw:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e175 mA @ 5V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePoint-Level Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eShort-circuit detection, overload protection, and pulse testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting Orientation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHorizontal or Vertical\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.25 lbs (0.11 kg)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Rating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOpen-style (IP20)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eAdvanced Safety and Diagnostic Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eexcels in identifying potential hardware failures before they lead to a dangerous state. Each output is capable of performing \"Pulse Testing,\" which momentarily switches the output off and back on (too fast to affect the load) to verify that the switching circuitry is functional and that no external cross-circuit exists. In the event of a detected fault, the module transitions to a safe \"Off\" state and reports the specific error code back to the safety controller for rapid troubleshooting.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Requirements and Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTo utilize the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e, the module must be seated in a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-TB\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-TBS\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eremovable terminal base. It requires a 1734-AENTR (Ethernet) or 1734-PDN (DeviceNet) adapter that supports CIP Safety protocol. During configuration in Studio 5000 Logix Designer, the user must define the Safety Network Number (SNN) and ownership to ensure that the safety data is securely and uniquely identified across the network.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTechnical FAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1734-OB8S be used in a standard (non-safety) POINT I\/O rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhile it can physically fit in the rack, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003erequires a Safety Controller (like a GuardLogix) and a safety-rated communication adapter to function. It cannot be controlled by a standard non-safety PLC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum current I can draw at high temperatures?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt 55°C (131°F), the total module current is typically derated. While the maximum per point is 1.0A at 40°C, always consult the 1734-OB8S derating curves if your enclosure ambient temperature exceeds 45°C to prevent thermal shutdown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this module support bipolar output wiring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1734-OB8S\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides sourcing outputs. For applications requiring dual-channel (bipolar) switching where one side is sourced and the other is sunk, you would typically pair this with a safety input or use specialized wiring configurations as defined in the Guard I\/O safety manual.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52457417769269,"sku":"1734-OB8S","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1734-OB8S.jpg?v=1773978391","url":"https:\/\/www.5gplc.com\/products\/1734-ob8s-allen-bradley-point-guard-i-o-8-point-24vdc-digital-safety-output-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}