3BSE008552R1 ABB DI811 Digital Input Module

Product Overview

The ABB DI811 (3BSE008552R1) is a 16-channel 48 V DC digital input module for the S800 I/O system. It provides current-sinking inputs arranged in two isolated groups of 8 channels each, making it suitable for industrial applications requiring higher-voltage digital signal acquisition.

Key Specifications

• Manufacturer: ABB
• Part Number: DI811 (3BSE008552R1)
• Product Type: Digital Input Module
• System: S800 I/O
• Channels: 16 (2 groups of 8)
• Voltage: 48 V DC
• Type: Current sinking
• Isolation: Groupwise isolated (2 groups)
• HART: No
• SOE: No
• Redundancy: No
• High Integrity: No
• MTU Compatibility: TU810, TU812, TU814, TU830, TU833, TU838, TU850
• Dimensions: 45 × 119 × 102 mm (W×H×D)
• Weight: 0.15 kg

Applications

• 48 V DC control circuits
• Heavy industry digital signal acquisition
• Motor control center status feedback
• Legacy 48 V DC interlock systems

FAQ

Q: Why use 48 V DC instead of 24 V DC?
A: 48 V DC inputs are common in heavy industry, railway, and marine applications where longer cable runs and higher noise immunity are required.

Q: Is DI811 compatible with 24 V DC signals?
A: No, DI811 is designed specifically for 48 V DC. For 24 V DC inputs, use DI810 or DI814.

Q: What is the difference between DI811 and DI831?
A: DI831 is a 48 V DC input module with SOE (Sequence of Events) capability. DI811 does not include SOE.

Installation Guide

1. Mount DI811 on a compatible MTU (TU810, TU830, etc.).
2. Wire 48 V DC digital inputs in two groups of 8 channels.
3. Ensure proper group isolation between the two 8-channel sections.
4. Configure input filter times in Control Builder M if needed.

Selection Tips

• Verify your field devices output 48 V DC signals before ordering.
• For SOE capability at 48 V, select DI831 instead.
• Use TU830 Extended MTU for three-wire sensor connections without additional terminals.