{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SAP284100R0001","brand":"ABB","brandSlug":"abb","productSlug":"1SAP284100R0001","canonicalUrl":"https://aoctrl.com/abb/1SAP284100R0001","factsUrl":"https://aoctrl.com/api/mcp/products/1SAP284100R0001","rawCanonicalId":null},"summary":{"shortDescription":"ABB DX581-S distributed automation digital I/O module, 1SAP284100R0001, 8 SDI SIL2 / 4 SDI SIL3, 8 SDO SIL2/3 24 VDC at 0.5 A, plus 4 pulse outputs, IP20, 20.4 to 28.8 V DC supply.","salesMarkdown":"## What the card is The ABB 1SAP284100R0001 is a DX581-S distributed automation digital input/output module that combines safe digital I/O and pulse outputs on one carrier, intended as an expansion drop on an ABB distributed I/O backbone rather than as a standalone PLC. It is positioned under PLCs and HMIs / PLCs and Accessories / PLC Expansion Modules, which is the line a panel builder browses when a safety-relevant I/O island has to sit next to the controller rather than on a remote bus. ## Channel layout and SIL class The card carries 8 digital inputs that satisfy SIL2 and 4 of those 8 also satisfy SIL3, with the same dual-rating logic on the 8 digital outputs at 24 VDC, and a configurable I/O count of 8 — meaning half the DIO block can be re-tasked per channel in the engineering tool. Pulse outputs number 4, and that pulse capability is what makes the DX581-S a fit for frequency or counter applications that a plain DI/DO cannot service. The input budget sits at 7 mA per channel and supports a configurable input delay of 1 to 500 ms, which covers debounce on mechanical contacts down to fast event capture on solid-state sensors without an external conditioning relay. ## Power, output drive, and signal envelope Supply is 20.4 to 28.8 V DC; output drive is transistorized at 0.5 A per channel over the same 20.4 to 28.8 V DC window. Inputs are DC with a maximum input voltage span of 0 to 30 V, and the I/O type is DC on both sides — there is no AC handling on the outputs of the DX581-S. The enclosure is IP20, which places the module in the cabinet-mount class only; field cabinet selection has to provide the IP54 or better environment that the surrounding wiring and terminations need. ## Where it sits against same-class siblings For applications that need 230 VAC outputs, the 1SAP245200R0001 (DX522) provides 8 digital inputs plus 8 relay outputs at 3 A and 195.5 to 276 V output — a relay-output alternative that is functionally different in switching element, not in channel count, and is not a pin-for-pin swap with the DX581-S. The 1SAP212000R0001 (TU516) is a terminal unit for analog and 24 VDC digital modules with spring terminals and a 0 to +60 °C operating envelope — a carrier accessory rather than a functional substitute, used as the backplane the DX581-S mounts onto. ## Integration and sourcing note Mechanical and software integration follows the standard ABB distributed I/O recipe: the DX581-S drops into the matching terminal unit, and the 20.4 to 28.8 V DC supply feeds the carrier within the rated window. Hold the unit on the grid applies in the safety sense: because the SDIs are rated SIL2 (four of them SIL3) and the SDOs are rated SIL2/3, the same card can serve a single SIL2 loop without an extra safety relay — provided the application safety case is built on that dual-rating rather than assumed. For a BOM line keyed to 1SAP284100R0001, the part is specified to order against an RFQ; the active lifecycle status and the regular channel both keep the line on a standard replenishment path, and a panel builder specifying a replacement against the DC532 or DX522 needs to re-check the SIL and output-type assumptions before sign-off.","metaTitle":"ABB 1SAP284100R0001 DX581-S 8 SDI/SDO 24 VDC, SIL2/3","metaDescription":"Active ABB DX581-S distributed I/O module: 8 SDI SIL2 / 4SDI SIL3, 8 SDO SIL2/3 at 24 VDC 0.5 A, 4 pulse outputs. Specified to RFQ for the 1SAP284100R0001 BOM line.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"CN8":"85389091","Output":"Transistor","Function":"8 SDI SIL2 / 4SDI SIL3, 24VDC. 8 SDO SIL2/3 24VDC 0.5A. 4 pulse outputs","Input Current":"7 mA","WEEE Category":"5. Small Equipment (No External Dimension More Than 50 cm)","Output Current":"0.5 A","Supply Voltage":"20.4 ... 28.8 V DC","WEEE B2C / B2B":"Business To Business","Delay Time (τ)":"1 ... 500 ms","lifecycle_stage":"current","Input Voltage Type":"DC","Output Voltage Type":"DC","Degree of Protection":"IP20","Maximum Input Voltage":"0 ... 30 V","Output Voltage Maximum":"20.4 ... 28.8 V","Number of Digital Inputs":"8","Number of Digital Outputs":"8","Safety Integrity Level (SIL)":"2","Certificates and Declarations/SCIP":"5916c970-096a-4753-a46e-f309240b87af Germany","Additional Information/Product Name":"Distributed Automation I/Os","Number of Digital Configurable I/Os":"8","Additional Information/Product Main Type":"DX581","Certificates and Declarations/REACH Date":"20241206","Certificates and Declarations/RoHS Information":"Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019","Certificates and Declarations/REACH Information":"True - contains substances > 0.1 mass percentage"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,317.99","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/1SAP284100R0001/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 1SAP284100R0001 — 1SAP240100R0001?","answer":"1SAP240100R0001 (DC532) is the higher-density digital cousin with 16 digital inputs and 16 configurable DI/DO at the same 0.5 A output class, but it is a different card in the same family rather than a pin-for-pin alternate — the SIL-rated safe I/O and pulse outputs of the DX581-S are not duplicated on the DC532."},{"question":"Will 1SAP284100R0001 drop into a panel specified around 1SAP240100R0001 without rewiring?","answer":"No. 1SAP240100R0001 (DC532) is a different card in the same family with 16 DI and 16 configurable DI/DO; the DX581-S brings safe-rated digital I/O and four pulse outputs that the DC532 does not provide, so a swap is a re-spec, not a rewire."},{"question":"What compliance documentation does ABB provide for 1SAP284100R0001?","answer":"ABB supplies a RoHS statement under EU Directive 2011/65/EU and Amendment 2015/863 of July 22, 2019, a REACH declaration dated 20241206 with SCIP notification on file for the Germany reference, and WEEE category 5 (business-to-business) for end-of-life handling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SAP284100R0001","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/1SAP284100R0001 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}