DI880 | ABB 16 Channel SIL3 High Integrity Digital Input Module

Product Overview

The ABB DI880 (3BSE028586R1) is a 16-channel SIL3-certified High Integrity digital input module for the S800 I/O system. It provides 24 V DC current-sinking inputs with extended diagnostics, Sequence of Events (SOE) capability at 1 ms resolution, and individual sensor power supplies per channel, making it ideal for safety instrumented systems (SIS).

Key Specifications

• Manufacturer: ABB
• Part Number: DI880 (3BSE028586R1)
• Product Type: High Integrity Digital Input Module
• System: S800 I/O
• Channels: 16 (1 group of 16)
• Voltage: 24 V DC (18–30 V DC)
• Input Current: 7 mA at 24 V DC
• Type: Current sinking
• Safety Rating: SIL3 certified per IEC 61508
• SOE: Yes, 1 ms resolution, up to 512 × 16 events queue
• Diagnostics: Extended (open wire, short circuit, process voltage supervision)
• Sensor Power: One current-limited transducer power output per input
• Isolation: Optical isolation per channel
• Redundancy: Supported (single or redundant configuration)
• MTU Compatibility: TU810, TU812, TU814, TU818, TU830, TU833, TU842, TU843, TU852
• Dimensions: 45 × 119 × 102 mm (W×H×D)
• Weight: 0.15 kg

Applications

• Safety instrumented systems (SIL3)
• Emergency shutdown (ESD) logic
• Burner management systems
• Critical process interlocks
• Sequence of Events recording

FAQ

Q: What makes DI880 different from DI840?
A: DI880 is SIL3-certified for High Integrity safety applications, while DI840 offers extended diagnostics but is not SIL-rated. DI880 also includes SOE with 1 ms resolution.

Q: Can DI880 be used in redundant configurations?
A: Yes, DI880 supports both single and redundant configurations when mounted on compatible redundancy MTUs (TU842/TU843/TU852).

Q: What MTU should I use for SIL3 applications?
A: Use TU830, TU833, TU842, TU843, or TU852 to leverage the built-in current-limited sensor power supplies required for SIL compliance.

Installation Guide

1. Mount DI880 on a compatible MTU (TU830/TU833 for single, TU842/TU843/TU852 for redundant).
2. Wire 24 V DC digital inputs using the MTU screw terminals.
3. Connect sensor power from the MTU's current-limited outputs to field devices.
4. Enable SOE and configure filter times (0–127 ms) in Control Builder M.
5. Verify SIL3 configuration per ABB Safety Manual requirements.

Selection Tips

• Order DI880 exclusively for safety-critical loops requiring SIL3 integrity.
• Pair with SIL-certified controllers (PM865/PM867 with SM811/SM812) for complete safety loops.
• Use shielded field cables with overall shield for proper EMC compliance.
• For non-safety digital inputs, DI810 or DI840 are more economical alternatives.