

The DX581-S is a versatile and safety-rated digital input/output module from the S500-S series, engineered for distributed automation and process control. This module combines 8 safe digital inputs (SDI) with SIL2 capability and 4 SDI with SIL3 rating, along with 8 safe digital outputs (SDO) rated for SIL2/3 at 24 VDC and 0.5 A per channel. Additionally, it features 4 pulse output channels, making it suitable for applications requiring precise timing or frequency control. With a nominal supply voltage of 20.4 to 28.8 VDC and a compact footprint (product net weight only 0.13 kg), the DX581-S is designed for easy integration into existing control systems. Its IP20-rated enclosure ensures protection in indoor industrial environments, while the configurable delay time (1 to 500 ms) allows fine-tuning of input filtering. Backed by a minimum order quantity of 1 piece and available as a standard stock item, this module offers both performance and availability for safety-critical installations.
| Parameter | Specification |
|---|---|
| Product Model | DX581-S |
| Product Type | Digital Input/Output Module (S500-S Series) |
| Function | 8 SDI SIL2 / 4 SDI SIL3, 24 VDC; 8 SDO SIL2/3, 24 VDC, 0.5 A; 4 pulse outputs |
| Number of Digital Inputs | 8 |
| Number of Digital Outputs | 8 |
| Number of Configurable I/Os | 8 |
| Input Voltage Type | DC |
| Input Current | 7 mA |
| Maximum Input Voltage | 0 to 30 V |
| Delay Time (τ) | 1 to 500 ms |
| Output Type | Transistor |
| Output Voltage Type | DC |
| Output Current | 0.5 A |
| Output Voltage Maximum | 20.4 to 28.8 V |
| Supply Voltage | 20.4 to 28.8 V DC |
| Safety Integrity Level (SIL) | SIL 2 (per IEC 61508) |
| Degree of Protection | IP20 |
| Product Net Weight | 0.13 kg |
| Product Net Dimensions (W x H x D) | 67.5 mm x 76 mm x 62 mm |
| Package Level 1 Dimensions (L x W x H) | 84 mm x 71 mm x 72 mm |
| Package Level 1 Gross Weight | 0.159 kg |
| Minimum Order Quantity | 1 piece |
| Order Multiple | 1 piece |
| Selling Unit of Measure | Piece |
| HS Code (CN8) | 85389091 |
| eClass | 27-24-22-02 |
| ETIM 8 | EC001419 – PLC digital I/O-module |
| UNSPSC | 32151802 |
| Product Main Type | DX581 |
| Product Name | Distributed Automation I/Os |
| Made To Order | No |
| WEEE Category | 5 – Small Equipment (No External Dimension More Than 50 cm) |
| SCIP | 5916c970-096a-4753-a46e-f309240b87af Germany (DE) |

What Does Our Clients Say
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Great product!
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Original and fast!
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