{"product_id":"allen-bradley-1791ds-ib8xob8-guard-i-o-safety-i-o-module","title":"Allen-Bradley 1791DS-IB8XOB8 Guard I\/O Safety I\/O Module","description":"\u003ch2\u003eAllen-Bradley 1791DS-IB8XOB8 Guard I\/O Safety I\/O Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for safety signal acquisition and output switching in Guard I\/O 1791ES and 1791DS DeviceNet platforms, the \u003cstrong\u003eAllen-Bradley 1791DS-IB8XOB8\u003c\/strong\u003e (\u003cstrong\u003e1791DS-IB8XOB8\u003c\/strong\u003e Safety I\/O Module) provides direct physical\/electrical execution through eight sinking safety inputs and eight sourcing safety outputs.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1791DS-IB8XOB8\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.93 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 70 deg C (-40 to 158 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e110 mA @ 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eGuard I\/O 1791ES and 1791DS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eGuard I\/O DeviceNet Safety I\/O Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eDeviceNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Inputs\u003c\/td\u003e\n\u003ctd\u003e8 sinking inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Outputs\u003c\/td\u003e\n\u003ctd\u003e8 sourcing outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Outputs\u003c\/td\u003e\n\u003ctd\u003e4 sourcing outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eSingle-channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eCurrent sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20.4-26.4 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications Power Supply\u003c\/td\u003e\n\u003ctd\u003e11-25 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications Current Consumption\u003c\/td\u003e\n\u003ctd\u003e110 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Input Voltage\u003c\/td\u003e\n\u003ctd\u003e11 VDC minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Input Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Output Current\u003c\/td\u003e\n\u003ctd\u003e0.7 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eDIN rail mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Specification\u003c\/td\u003e\n\u003ctd\u003eCopper 0.2-2.5 mm2 (AWG 24-12) solid wire, 0.34-1.5 mm2 (AWG 22-16) flexible wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and DeviceNet Safety Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1791DS-IB8XOB8 operates as a CompactBlock Guard I\/O DeviceNet safety module with integrated input and output processing. The module supports I\/O density scaling by combining safety input monitoring and solid-state safety output control in a single field-mounted block.\u003c\/p\u003e\n\u003cp\u003eAllen-Bradley Guard I\/O modules require compatible safety controllers and configured DeviceNet safety communication parameters. Firmware flash compatibility and network configuration must be verified before integration into an existing safety control architecture.\u003c\/p\u003e\n\u003cp\u003eThe module provides current sinking input channels, current sourcing safety outputs, and dedicated test outputs for safety device diagnostics. Output channels are designed for controlled DC switching with a rated output current of 0.7 A per safety output.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many safety input and output channels are available on the 1791DS-IB8XOB8?\u003cbr\u003eA: The module provides 8 sinking safety inputs and 8 sourcing safety outputs, with 4 additional sourcing test outputs.\u003c\/p\u003e\n\u003cp\u003eQ: What DC supply range is required for I\/O operation?\u003cbr\u003eA: The I\/O power supply operates within 20.4-26.4 VDC, based on a 24 VDC nominal supply.\u003c\/p\u003e\n\u003cp\u003eQ: Does the module support SIL3 safety applications?\u003cbr\u003eA: The module is specified as a Guard I\/O DeviceNet Safety module suitable for applications requiring SIL3-level safety requirements when applied within an approved safety system configuration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1791DS-IB8XOB8 on a compatible DIN rail structure and verify mechanical retention before wiring field devices. Confirm that power supply polarity, DeviceNet communication connections, and safety I\/O terminal assignments match the system design documentation.\u003c\/p\u003e\n\u003cp\u003eUse appropriate cable routing practices to separate safety signal wiring from high-voltage power conductors and sources of electrical interference. Cable shielding and grounding methods should follow the control panel and safety system installation standards.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, verify each safety input transition, safety output response, and test output diagnostic function. Confirm DeviceNet node configuration, safety communication status, and field device wiring integrity before placing the module into operational service.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43763016728666,"sku":"1791DS-IB8XOB8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1791DS-IB8XOB82.jpg?v=1785397163","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1791ds-ib8xob8-guard-i-o-safety-i-o-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}