ABB AI02 16 Channel Analog Input Module

The ABB AI02 is a high-density 16-channel analog input module belonging to the ABB S500 I/O family. It accepts standard analog signals including 4-20 mA and 0-10 V, converting them with 16-bit resolution for precise monitoring and control in PLC-based systems.

General Description

Designed for use with ABB's AC500 PLCs and S500 remote I/O stations, the AI02 module enables seamless acquisition of analog process variables such as pressure, temperature, flow, and level. Each of the 16 differential or single-ended inputs can be individually configured via software, offering flexibility in signal adaptation. The module communicates with the bus coupler via the S500 backplane bus, ensuring fast and deterministic data exchange.

Key Characteristics

• Channel Count: 16 analog inputs, electrically isolated in groups.

• Input Signal Ranges: 0-20 mA, 4-20 mA, ±10 V, 0-10 V, 0-5 V (selectable per channel).

• Resolution: 16-bit A/D converter, providing high measurement accuracy.

• Sampling Rate: 10 ms per channel (typical) for fast process updates.

• Diagnostics: Wire-break and short-circuit detection for 4-20 mA loops; LED indicators per channel.

• Galvanic Isolation: 500 V AC between channels and backplane bus.

Technical Data

• Power Consumption: 120 mA @ 5 V DC (from backplane), 80 mA @ 24 V DC (external if loop-powered).

• Input Impedance: > 1 MΩ (voltage mode), 250 Ω (current mode with internal resistor).

• Accuracy: ±0.1% of full scale at 25°C, ±0.3% over temperature range.

• Temperature Drift: < 50 ppm/°C.

• Operating Temperature: -25°C to +60°C.

• Terminals: Removable spring-cage connectors, suitable for 0.2-2.5 mm² wire.

• Dimensions: 102 x 67 x 72 mm (H x W x D) (12.5 mm wide module).

Configuration and Integration

Using ABB Automation Builder or Control Builder Plus, the AI02 can be parameterized with scaling, filtering, and alarm limits. The module supports both raw data and engineering unit conversion. It is fully compatible with CODESYS libraries, enabling straightforward programming. Redundant bus operation is possible when used with appropriate S500 bus extensions.

Typical Applications

The AI02 is ideal for applications requiring numerous analog inputs in a compact footprint, such as water treatment plants, chemical processing, HVAC systems, and machine monitoring. Its high channel density reduces panel space and overall system cost.

Compliance and Certifications

• CE, UL, cUL, and marine certifications (DNV, GL, ABS) upon request.

• RoHS compliant.

• Protection class: IP20 (installed in enclosure).

Note: This technical description is for informational purposes; it does not imply availability or commercial conditions.