ABB DI581-S 1SAP284000R0001 Safety Digital Input Module

Product Description

The DI581-S (1SAP284000R0001) is a high-integrity Safety Digital Input Module developed by ABB as part of the specialized AC500-S Functional Safety PLC and Distributed Automation I/O system. Engineered for high-risk industrial environments, this 24V DC module can be configured dynamically to support either 16 Safety Digital Inputs (SDI) up to SIL2 or 8 Safety Digital Inputs up to SIL3. 

Technical Specifications

• Manufacturer: ABB

• Product Series: AC500-S Safety PLC / DI581 Series

• Model Identification: DI581-S

• ABB Order Code: 1SAP284000R0001

• Safety Integration Level Options: 16SDI for SIL2 Protection / 8SDI for SIL3 Protection

• Operational Input Voltage: 24 V DC nominal (Maximum range: 0 to 30 V DC)

• Wiring Topology: 1-wire implementation layout

• Safety Pulse Array: 8 integrated pulse output channels

• Nominal Input Current: 7 mA

• Adjustable Filter Delay Time ($\tau$): 1 ms to 500 ms

• Enclosure Protection Level: IP20

• Meets Safety Category: Category 2

• International Commodity Tariff Code (CN8): 85389091

• Standard Classifications: ETIM 8/9/10 (EC001419 - PLC digital I/O-module), UNSPSC 32151802

• Environmental & Standards Compliance: CE (EU & UK), RoHS Directive 2011/65/EU (Amendment 2015/863), REACH Declarations

• Product Net Weight: 0.122 Kg

• Product Dimensions (W x H x D): 67.5 mm x 76 mm x 62 mm

• Gross Packaged Weight: 0.151 Kg

• Level 1 Packaging Dimensions: 71 mm W x 72 mm H x 84 mm L

Industrial Application Scenarios

The DI581-S (1SAP284000R0001) module is primarily deployed in high-risk automated areas, including robotic assembly cells, emergency shutdown (ESD) stations, wind turbine pitch controls, and material handling cranes. When integrated with an AC500-S safety CPU, it constantly monitors critical fail-safe hardware interfaces like dual-channel emergency stop buttons, safety light curtains, and interlocking gate switches. By grouping the inputs into SIL3 combinations, it guarantees that single component faults or wire breaks are instantly flagged, safe-state machinery is brought to an immediate halt, and field operators remain protected.