The ABB DI840 (3BSE020836R1) is a specialized 16-channel digital input module designed for the S800 I/O system. It is engineered for high-availability applications, supporting redundancy and Sequence of Events (SOE) recording with high-precision time tagging.
ABB DI840 | 3BSE020836R1 | 16-Channel Digital Input Module
| Feature | Specification |
| Model | DI840 |
| Part Number | 3BSE020836R1 |
| Origin | Estonia / Sweden |
| Dimensions | 119mm x 45mm x 102mm |
| Weight | 0.20 kg |
| Power Consumption | 50mA (at 24V DC) |
| Input Channels | 16 Channels (Isolated) |
| Rated Voltage | 24V DC |
Operating Precautions
- Redundancy Setup: Ensure the module is correctly seated in a redundant MTU (Module Termination Unit) if being used for bumpless failover.
- SOE Configuration: To utilize Sequence of Events recording, ensure the system clock is synchronized via the controller.
- Signal Integrity: Use shielded cables for input signals to prevent electromagnetic interference in high-voltage environments.
- Firmware Matching: Verify that the module firmware version is compatible with your existing S800 I/O station.
Common Questions (Q&A)
Q: Does the DI840 support input signal filtering? A: Yes, the module features configurable hardware and software filters to eliminate contact bounce and electrical noise.
Q: What is the main difference between DI840 and DI810? A: The DI840 supports redundancy and high-resolution time-tagging (SOE), whereas the DI810 is a standard, non-redundant module.
Q: Can this module detect wire breaks? A: Yes, when used with specific field equipment, it can be configured for line monitoring to detect open or short circuits.
Recommended Similar Models
- ABB DI810 (Standard 16-ch Digital Input)
- ABB DI830 (24V DC Digital Input, 16-ch)
- ABB DI880 (High-integrity Safety Input)
- ABB DO840 (Redundant Digital Output equivalent)
- ABB AI845 (Redundant Analog Input module)
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