The ABB 3BSE008508R1 (DI810) is a high-performance digital input module from the S800 I/O series. It is designed to interface with field-side digital sensors, providing 16 channels of 24V DC input. This module is renowned for its reliability, modularity, and ability to operate in demanding industrial environments, making it a cornerstone for distributed control systems (DCS) like the ABB Ability System 800xA.
Technical Specifications
| Parameter | Detail |
| Product Model | DI810 / 3BSE008508R1 |
| Manufacturer | ABB |
| Number of Channels | 16 Digital Inputs |
| Voltage Rating | 24V DC |
| Current Consumption | 50 mA (typical) |
| Operating Temperature | -40°C to +70°C |
| Mounting | S800 I/O Mounting Base (TU810, TU812, etc.) |
| Dimensions (Approx.) | 119mm x 45mm x 102mm |
| Weight | 0.25 kg |
| Country of Origin | Sweden / Estonia |
Application Fields
- Process Automation: Oil & Gas, Petrochemical, and Chemical plant monitoring.
- Power Generation: Boiler control and auxiliary equipment monitoring in power plants.
- Manufacturing: Automated assembly lines and robotic cell integration.
- Water Treatment: Monitoring flow meters, limit switches, and pressure sensors.
Usage Instructions
- Mounting: Snap the module onto the appropriate S800 terminal unit (MTU). Ensure the module is securely locked in place with the mechanical release lever.
- Wiring: Connect field signals to the corresponding terminals on the MTU. The DI810 supports standard 24V DC sensor signals.
- Addressing: Configure the module via the control system software. Ensure the module address matches the physical slot assigned in the I/O configuration.
- Indicators: Use the front-facing LED indicators (Channel Status and Fault) for real-time diagnostics. Green LEDs indicate active inputs, while red LEDs indicate hardware faults.
- Hot Swapping: The DI810 supports hot swapping, allowing you to replace the module during operation without shutting down the entire control system (when used with appropriate power distribution).

Frequently Asked Questions (Q&A)
- Q: Is the DI810 compatible with all S800 terminal units?
- A: It is compatible with most standard vertical and horizontal mounting bases (e.g., TU810, TU812). Always verify the specific MTU datasheet before installation.
- Q: Does this module require an external power supply?
- A: Yes, 24V DC power is required for the field inputs, typically provided via the terminal unit’s power distribution terminals.
- Q: Can I use this for safety-related applications?
- A: The DI810 is a general-purpose I/O module. For Safety Instrumented Systems (SIS), you should use the designated S800 High Integrity (HI) modules.
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