DX581-S 1SAP284100R0001 | ABB | S500-S Safety Digital I/O Module

Product Overview

The ABB DX581-S (1SAP284100R0001) serves as a core component of the AC500-S functional safety system. This high-integrity digital input/output module manages critical safety loops in decentralized automation environments. It executes safety functions up to SIL3 (IEC 61508) or PLe (ISO 13849-1), providing a rugged interface for emergency stops, light curtains, and safety valves. We supply this unit as 100% Brand New and Original, ensuring your safety-critical infrastructure utilizes uncompromised, factory-certified hardware.

Technical Specifications

The DX581-S integrates high-density safety points within a compact S500 footprint:

• Safety Digital Inputs (SDI): 8 channels (SIL2) or 4 channels (SIL3), 24V DC

• Safety Digital Outputs (SDO): 8 channels (SIL2/3), 24V DC 0.5A

• Pulse Outputs: 4 channels for sensor monitoring and clocking

• Wiring Method: 1-wire connection

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

• Net Weight: 0.13 kg

• Product ID: 1SAP284100R0001

Engineering Advantages

• Scalable Safety Integrity: The module allows flexible configuration between SIL2 and SIL3 architectures. By pairing input channels, engineers achieve the highest safety integrity level (SIL3) without requiring additional hardware types, optimizing spare parts inventory.

• Integrated Pulse Testing: Four dedicated pulse outputs monitor external wiring for cross-circuits and short-circuits. This proactive diagnostic feature detects cabling faults before they lead to a dangerous failure, maintaining the safety loop's functional integrity.

• High-Density Safety Switching: The 8 safety digital outputs provide 0.5A current per channel. This capacity allows the DX581-S to drive safety contactors and solenoid valves directly, simplifying the control cabinet layout by reducing the need for interposing safety relays.

• Seamless AC500-S Integration: The module utilizes the standard S500 bus interface. It communicates safety data via the PROFIsafe protocol, allowing safety and non-safety I/O modules to coexist on the same terminal base, which saves significant DIN rail space.

• Extreme Diagnostic Coverage: Internal self-tests continuously verify the health of the output transistors and input logic. The module reports any internal discrepancy to the Safety CPU immediately, triggering a safe state to protect personnel and machinery.

FAQs

• Can I mix the DX581-S with standard non-safety S500 modules?

  Yes. The ABB AC500 system architecture allows safety modules like the DX581-S to sit on the same I/O bus as standard modules. However, you must utilize the correct Safety CPU (SM560-S) and a compatible Terminal Base to manage the safety signals.

• What is the purpose of the 4 pulse outputs?

  These outputs generate specific test signals for the safety inputs. The module uses these pulses to distinguish between a valid "High" signal and a short-circuit to a 24V supply, ensuring the input remains functional and reliable.

• Does the unit require specialized software for configuration?

  You configure the DX581-S using the ABB Automation Builder software with the Safety PLC license. This environment provides the necessary libraries and safety-certified function blocks to define your logic and SIL parameters.

• What is the significance of the "1-wire" description?

  It refers to the simplified wiring topology for the I/O signals. While standard safety loops often require complex multi-wire returns, the DX581-S architecture optimizes the terminal connections while maintaining full diagnostic coverage for each channel.