Overview
The DI814 Digital Input Module is part of ABB’s S800 I/O system, which integrates with System 800xA and AC 800M controllers. It provides 16 channels for 24 VDC digital inputs, divided into two isolated groups of eight channels each, with one voltage supervision input per group. This design ensures fault detection, galvanic isolation, and reliable signal acquisition from field devices such as sensors, switches, and interlocks.
Moreover, each input channel includes current limiting components, EMC protection, optical isolation, and LED indicators for state monitoring. The module reports error signals through the ModuleBus if voltage supervision detects a fault, enhancing system diagnostics and reliability.
Technical Data
| Specification | Description |
|---|---|
| Product Type | Digital Input Module |
| Model Reference | DI814 |
| Operating Temperature | –25 °C to +60 °C |
| Dimensions | 100 × 50 × 30 mm |
| Weight | 0.1 kg |
Typical Applications
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Power generation: Acquires digital signals from turbine sensors, excitation systems, and auxiliary equipment.
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Process industries: Monitors limit switches, interlocks, and sensors in chemical, oil & gas, and pharmaceutical plants.
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Water treatment facilities: Reads pump status, valve positions, and monitoring equipment signals.
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Manufacturing automation: Captures inputs from robotic systems, conveyors, and machine interlocks.
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Infrastructure systems: Applied in building automation and utility monitoring networks.
Example: In a refinery, the DI814 module collects redundant sensor signals, ensuring safe and fault‑tolerant operation of distributed control systems.
FAQ
Q1: How many channels does the DI814 provide?
A1: It offers 16 digital input channels, divided into two isolated groups.
Q2: What is the input voltage range?
A2: The module accepts 18 to 30 VDC signals, with approximately 6 mA current at 24 V.
Q3: Does it include diagnostics?
A3: Yes, it features LED indicators and voltage supervision error reporting.
Q4: Which MTUs are compatible?
A4: It works with TU810V1, TU812V1, TU814V1, TU830V1, and TU838 termination units.
Q5: What industries typically use this module?
A5: It is widely applied in power generation, process industries, water treatment, and manufacturing automation.
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