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ABB 3BSE028586R1 DI880

ABB DI880 (3BSE028586R1) is a High Integrity Digital Input Module from the ABB S800 I/O family, designed for safety-critical process automation applications. It provides 16-channel 24 V DC digital inputs and supports both single and redundant configurations.

1. General Information

2. Technical Specifications

3. Key Features

• 16 independent 24 V DC input channels
• High-integrity safety design
• Supports redundant operation
• SIL3 certification according to IEC 61508
• Category 4 capability according to EN 954-1
• Built-in input status LEDs
• Advanced onboard diagnostics
• Optical isolation and EMC protection
• Current-limited sensor supply for each input
• Sequence of Events (SOE) recording with 1 ms resolution

4. SOE Function (Sequence of Events)

The DI880 includes a high-speed event recording function suitable for safety and trip analysis:

• Event resolution: 1 ms
• Event accuracy: -0 ms / +1.3 ms
• Event queue capacity: 512 × 16 events
• Supports event filtering (shutter filter)
• Reports channel status, queue status, synchronization jitter, uncertain time, and channel errors

5. Diagnostics and Indicators

Front panel indicators include:

• Fault (F)
• Run (R)
• Warning (W)
• Primary (P)
• Channel status LEDs (1–16)

Diagnostic monitoring includes:

• Process power supervision
• Internal circuit monitoring
• Module errors
• Channel errors
• Warning status

6. Compatible Module Termination Units (MTU)

The DI880 can be used with ABB S800 I/O MTUs including:

• TU810
• TU812
• TU814
• TU818
• TU830
• TU833
• TU838
• TU842
• TU843
• TU852

7. Mechanical Data

8. Typical Applications

ABB DI880 is commonly used in:

• Safety Instrumented Systems (SIS)
• Emergency shutdown systems (ESD)
• Burner management systems
• Turbine and power plant protection
• Oil & gas process safety systems
• Chemical and petrochemical plants
• High-availability industrial automation systems

Conclusion

The ABB DI880 3BSE028586R1 is a SIL3-rated high-integrity 16-channel 24 V DC digital input module for ABB S800 I/O and System 800xA environments. Its combination of redundancy support, SOE capability, diagnostics, and safety certification makes it suitable for critical protection and process-control applications where reliable signal acquisition is required.