DI581‑S 1SAP284000R0001 ABB Safety Input Module – 16 SDI SIL2/8 SIL3

 1.0 Core identification

• DI581‑S 1SAP284000R0001 – Safety digital input module
• type : S500‑S series, 24 V DC, 16 SDI channels
• safety levels : 16 SDI SIL2 / 8 SDI SIL3 configurable
• extra function : 8 pulse outputs (1‑wire technology)

 2.0 Technical data – indented tree

• electrical
  • input voltage 24 V DC (max 30 V)
  • input current 7 mA per channel
  • delay time 1…500 ms (programmable)
  • 8 pulse outputs integrated
• safety & environment
  • SIL2 (16 channels) / SIL3 (8 channels)
  • IP20 protection (IEC 60529)
  • CE, RoHS (EU 2011/65/EU) compliant
  • REACH declaration 3ADR980139 (contains substances >0.1%)
• mechanical
  • W 67.5 mm x H 76 mm x D 62 mm
  • net weight 0.122 kg, gross 0.151 kg
  • package 84x72x71 mm (1 carton)
• classifications
  • eClass 27‑24‑22‑02, ETIM EC001419
  • UNSPSC 32151802, CN8 85389091

 3.0 Key features & benefits

• dual safety mode : use as 16 SDI SIL2 or 8 SDI SIL3
• 1‑wire pulse outputs – 8 channels for simple actuator control
• flexible delay : 1‑500 ms per input (software adjustable)
• compact size : fits S500‑S system, saves cabinet space

 4.0 Package, warranty & logistics

• kit includes : 1 x DI581‑S module, product documentation
• warranty : 12 months against defects
• shipping : FedEx, UPS, DHL – express tracked
• inquiries :
  sales@powergearx.com |
  +86 18030005825 (WhatsApp)

 5.0 Professional FAQ (experience + selection guide)

• What is the difference between SIL2 and SIL3 mode?In SIL2 mode you can use all 16 inputs. For SIL3 you must pair inputs – only 8 safe channels.
• Can I use the 8 pulse outputs as standard outputs?They are 1‑wire pulse outputs for counters/sensors, not general‑purpose digital outputs.
• Is this module compatible with older S500 PLCs?Yes. DI581‑S fits S500 and S500‑S safety racks with same backplane bus.
• What does “1‑wire” mean for pulse outputs?It means two channels share one return wire – reduces cabling for pulse encoders.
• Does it come with configuration software?No. You need ABB Automation Builder or similar to set delay and safety parameters.

 6.0 Typical application & diagnostic tip

• use case : safety interlock monitoring, emergency stop, light curtain integration
• diagnostic hint : module LEDs show channel status and pulse activity – first check if input fails

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