The DI581-S is a high-integrity digital input module engineered for the S500-S distributed safety I/O platform. It provides 16 safe digital inputs (SDI) that can be configured for SIL2 (16 channels) or SIL3 (8 channels) operation, along with 8 pulse output channels for advanced monitoring tasks. With a nominal 24 VDC supply and a 7 mA input current, the DI581-S ensures reliable signal detection across a wide input voltage range of 0 to 30 V. Its adjustable delay time from 1 to 500 ms allows fine-tuning for noise immunity or fast response. The module is housed in a rugged IP20 enclosure measuring 67.5 mm wide, 76 mm high, and 62 mm deep, with a net weight of just 0.122 kg. It is designed for direct mounting on DIN rails and supports 1-wire sensor connection, making it ideal for safety-critical applications in manufacturing, process control, and machinery protection.
| Parameter |
Specification |
| Product Type |
Safety Digital Input Module |
| Model |
DI581-S |
| System Compatibility |
S500-S Distributed I/O |
| Number of Digital Inputs |
16 SDI (SIL2) / 8 SDI (SIL3) |
| Pulse Outputs |
8 |
| Input Voltage Type |
DC |
| Nominal Input Voltage |
24 VDC |
| Maximum Input Voltage |
0 ... 30 V |
| Input Current |
7 mA |
| Delay Time (τ) |
1 … 500 ms |
| Degree of Protection |
IP20 |
| Safety Integrity Level (SIL) |
SIL2 / SIL3 (per IEC 61508) |
| Product Net Weight |
0.122 kg |
| Product Net Width |
67.5 mm |
| Product Net Height |
76 mm |
| Product Net Depth / Length |
62 mm |
| Gross Weight |
0.151 kg |
| Package Level 1 Dimensions (L x W x H) |
84 x 71 x 72 mm |
| Package Level 1 Units |
1 carton |
| Minimum Order Quantity |
1 piece |
| Order Multiple |
1 piece |
| Selling Unit of Measure |
piece |
| eClass |
27-24-22-02 |
| ETIM 8 |
EC001419 – PLC digital I/O-module |
| UNSPSC |
32151802 |
| WEEE Category |
5. Small Equipment (≤50 cm) |
| SCIP |
34c5ffa9-2ff5-4778-8ac9-e57fb41dd664 (DE) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22