{"product_id":"1791ds-ib12-allen-bradley-guard-i-o-12-point-digital-combination-module-devicenet-safety-compactblock","title":"1791DS-IB12 Allen-Bradley Guard I\/O 12 Point Digital Combination Module DeviceNet Safety CompactBlock","description":"\u003cp\u003eConfigured for safety input monitoring and test output control in DeviceNet Safety CompactBlock networks, the \u003cstrong\u003eAllen-Bradley 1791DS-IB12\u003c\/strong\u003e (\u003cstrong\u003e1791DSIB12\u003c\/strong\u003e Guard I\/O Digital Combination Module) provides direct physical and electrical execution for distributed safety I\/O signal processing.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1791DS-IB12 is a Guard I\/O module containing 12 digital safety inputs and 4 test outputs. It is designed for connection within Allen-Bradley DeviceNet Safety architectures where field devices require monitored input acquisition and safety-rated output testing functions.\u003c\/p\u003e\n\u003cp\u003eThe module operates from a 24 VDC supply and communicates through the DeviceNet Safety network interface. It supports single-channel input configurations with defined on-state and off-state voltage thresholds.\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-IB12\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eGuard I\/O 12 Point Digital Combination Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eDeviceNet Safety CompactBlock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e17 x 6.7 x 7.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 to +50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e110 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20.4 to 26.4 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eSingle-Channel Digital Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Outputs\u003c\/td\u003e\n\u003ctd\u003e4\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\u003eNetwork Interface\u003c\/td\u003e\n\u003ctd\u003eDeviceNet Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and PLC I\/O Integration Characteristics\u003c\/h3\u003e\n\u003cp\u003eAs part of the Allen-Bradley industrial control platform family, the 1791DS-IB12 follows structured I\/O density scaling concepts used in distributed automation systems. The module provides compact field-level signal collection by combining multiple safety inputs and test outputs in a single hardware node.\u003c\/p\u003e\n\u003cp\u003eDeviceNet Safety communication allows the module status and safety I\/O data to be exchanged with compatible safety controllers. Proper network configuration requires matching node addressing, safety parameters, and controller firmware compatibility.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cp\u003eThe standard package contents include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1791DS-IB12 Guard I\/O Digital Combination Module\u003c\/li\u003e\n\u003cli\u003e1 x Product identification label\u003c\/li\u003e\n\u003cli\u003e1 x Hardware unit with integrated terminal connection interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional components may be required depending on installation requirements:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDeviceNet Safety communication cable\u003c\/li\u003e\n\u003cli\u003e24 VDC field power wiring\u003c\/li\u003e\n\u003cli\u003eCompatible safety controller or scanner module\u003c\/li\u003e\n\u003cli\u003eField device terminal accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Requirements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module inside an enclosure suitable for industrial electrical equipment.\u003c\/li\u003e\n\u003cli\u003eVerify the 24 VDC supply polarity before applying power.\u003c\/li\u003e\n\u003cli\u003eSeparate safety signal wiring from high-voltage power cables to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eConnect cable shields according to the grounding method specified for the control system.\u003c\/li\u003e\n\u003cli\u003eConfirm DeviceNet Safety node configuration before placing the module into operation.\u003c\/li\u003e\n\u003cli\u003eCheck field input devices for correct voltage levels matching the module input thresholds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the main function of the 1791DS-IB12 module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module collects 12 digital safety input signals and provides 4 test outputs for DeviceNet Safety CompactBlock applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat supply voltage does the 1791DS-IB12 require?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module operates from a 24 VDC supply with an allowable operating range of 20.4 to 26.4 VDC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow many safety inputs are available on this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1791DS-IB12 provides 12 single-channel digital safety inputs for connected field devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of network does this module use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module is designed for DeviceNet Safety communication within compatible Allen-Bradley safety control systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the module include test outputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The unit provides 4 test outputs used for safety input device monitoring functions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the operating temperature range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specified operating temperature range is -10 to +50 deg C for normal installation conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the input voltage thresholds be configured by firmware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module uses defined electrical input thresholds. Configuration depends on the connected safety controller and system parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs hot swapping supported for this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHot swapping capability is not specified in the provided technical data. Power removal before replacement is recommended.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066454134957,"sku":"1791DS-IB12","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1791DS-IB12_135.jpg?v=1785742225","url":"https:\/\/www.maxwellplc.com\/ga\/products\/1791ds-ib12-allen-bradley-guard-i-o-12-point-digital-combination-module-devicenet-safety-compactblock","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}