{"product_id":"di581-s-1sap284000r0001-abb-safety-digital-input-module","title":"DI581-S 1SAP284000R0001 ABB Safety Digital Input Module","description":"\u003ch2\u003eABB DI581-S S500-S Safety Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB DI581-S\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eDI581-S\u003c\/strong\u003e Safety Digital Input Module, operates as a dedicated hardware component for safety-critical state acquisition within AC500-S functional safety platforms. The module executes direct electrical monitoring of discrete safety field devices by processing 16 safety digital inputs alongside 8 integrated test pulse outputs, transmitting deterministic binary logic profiles across safety-certified backplane networks without software loop interference.\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\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\u003eDI581-S (Part Number: 1SAP284000R0001)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.122 kg net (0.151 kg gross)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e67.5 mm x 76.0 mm x 62.0 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C (horizontal mounting), 0 to +40 deg C (vertical mounting)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e~0.18 A at 24 VDC (internal base load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Digital Inputs\u003c\/td\u003e\n\u003ctd\u003e16 channels (1-wire configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest Pulse Outputs\u003c\/td\u003e\n\u003ctd\u003e8 integrated channels for sensor loop diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e0 to 30 VDC continuous (24 VDC rated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current Draw\u003c\/td\u003e\n\u003ctd\u003e~7 mA per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003eConfigurable from 1 to 500 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eSIL2 (utilizing 16 inputs), SIL3 (utilizing 8 paired inputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eElectrical galvanic isolation per module block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated Protection\u003c\/td\u003e\n\u003ctd\u003eReverse polarity, reverse supply, short circuit, and continuous overvoltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInrush Current Profile\u003c\/td\u003e\n\u003ctd\u003e0.06 A at 24 VDC (2 s duration), 0.1 A at 30 VDC (2 s duration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDegree of Protection\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Reliability Safety Control (SIS) Technical Attributes\u003c\/h3\u003e\n\u003cp\u003eThe hardware architecture satisfies SIL3 certification parameters by employing a dual-channel structure internally, enabling fail-safe state execution during critical process faults or line abnormalities. When paired for SIL3 operations, the 16 physical points collapse into 8 redundant pairs, providing the cross-channel diagnostics needed to calculate high-demand loop safety integrity.\u003c\/p\u003e\n\u003cp\u003eCross-talk suppression and line fault detection rely on the 8 integrated test pulse outputs; these circuits inject microsecond-level low periods into the field loops to expose cross-connections, short circuits to external potentials, or open wires before a safety demand occurs. Galvanic isolation matrices isolate the field-side electrical circuits from the internal logic components, containing field transients and preventing localized overvoltage faults from damaging the safety processor bus or destabilizing concurrent safety networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How do the safety integrity constraints affect total channel availability on the module?\u003c\/p\u003e\n\u003cp\u003eA: For SIL2 configurations, all 16 safety digital inputs operate as independent, single-wire channels. For SIL3 configurations, internal cross-checking requirements mandate dual-channel evaluation, reducing the usable allocation to 8 paired safety inputs.\u003c\/p\u003e\n\u003cp\u003eQ: What is the mechanical orientation restriction when deploying the DI581-S in high-temperature panels?\u003c\/p\u003e\n\u003cp\u003eA: Horizontal DIN-rail mounting permits operation up to +60 deg C. If the module is mounted vertically, natural convection cooling efficiency drops, necessitating a mandatory ambient temperature derating down to a maximum of +40 deg C.\u003c\/p\u003e\n\u003cp\u003eQ: Can standard non-safety inputs be routed through the DI581-S module?\u003c\/p\u003e\n\u003cp\u003eA: While the hardware can physically read standard 24 VDC digital signals, the module processes all inputs using safety-certified firmware logic. Non-safety variables handled by this module must be mapped in accordance with the safety manual guidelines to prevent systemic compromise.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Mounting Stability:\u003c\/strong\u003e Snap the chassis onto a standard TH35-15 or TH35-7.5 symmetric DIN rail. Verify the mechanical locking tab snaps securely into place to prevent high-vibration environments from disrupting backplane logic pin continuity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding Standards:\u003c\/strong\u003e Use twisted-pair shielded cabling for all low-voltage safety input loops. Terminate cable shields exclusively at the central functional earth bar at the enclosure entrance; do not use module common points for shield grounding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercurrent Protection:\u003c\/strong\u003e Install a 10 A fast-acting fuse in series with the main 24 VDC process supply loop to protect the internal transistor matrices from thermal degradation during field short-circuit distribution faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvective Thermal Clearance:\u003c\/strong\u003e Ensure an unobstructed clearance of at least 50 mm above and below the module housing to facilitate standard natural convection cooling vectors.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":44406801760355,"sku":"DI581-S 1SAP284000R0001","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/540_e6d97a36-8bec-4357-b06a-cb7244b59c70.jpg?v=1785141818","url":"https:\/\/www.autocontrolglobal.com\/products\/di581-s-1sap284000r0001-abb-safety-digital-input-module","provider":"AutoControl Global","version":"1.0","type":"link"}