Technical Specifications Supported Signal Type: 4‑20mA, 0‑10V Module Power Supply: 24VDC Maximum Operating Current: 50mA Measurement Accuracy: ±0.05% full scale Operating Temperature: -25℃ to +85℃ Wiring Mode: Screw terminal block Mounting Type: Standard DIN‑rail Bus Compatibility: AC31 backplane bus
Functional Features Supports analog signal acquisition from field sensors and transmitters. Provides complete analog‑to‑digital conversion function. Delivers digital process data to PLC CPU via backplane bus. Implements channel signal configuration through programming software. Provides internal circuit filter to suppress field electromagnetic interference.
Application Scenarios
Signal acquisition of temperature, pressure, flow, and level transmitters in process automation. Deployed in power generation, oil and gas, chemical, and water treatment plants running ABB Advant OCS / INFI 90 DCS. Suitable for both new installations and legacy system modernization projects.
Installation and Usage Notes
Insert the module into a compatible INFI 90 Multi-Bus rack until the mechanical latch locks. Wire field signals to the terminal block observing polarity and signal type. Configure each channel via the DCS engineering software (e.g., Control Builder). Verify the RUN LED is illuminated and the FAIL LED is off after power-up. When replacing an IMASI23, confirm firmware compatibility with the Process Manager (PM) module if module revision is below 04.
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