ABB IMASI23 Symphony Harmony INFI 90 Universal Analog Input Module
Product Overview
The ABB IMASI23 is a high-performance Universal Analog Input Slave Module designed for the Symphony Harmony and INFI 90 distributed control system (DCS) environments. This module is engineered to interface up to 16 independent analog signals from field instrumentation to the Harmony controller. Its "Universal" architecture allows it to handle a diverse range of inputs—including 4-20 mA current loops, ±10 VDC, thermocouples, and RTDs—on a single hardware platform. By offloading complex A/D conversion, cold junction compensation, and linear correction factors from the main controller, the IMASI23 ensures high-speed, accurate signal acquisition for critical industrial processes.
Technical Specifications
The following specifications define the electrical and functional performance of the IMASI23:
| Parameter | Specification Details |
| Model Number | IMASI23 |
| Product Family | Symphony Harmony / INFI 90 |
| Input Channels | 16 Channels (Universal) |
| Supported Inputs | 4–20 mA, ±10 V, 0–5 V, 1–5 V, Thermocouples (all types), mV, RTD |
| Accuracy | ±0.1% of Full Scale |
| Resolution | 15-bit Plus Sign |
| Isolation Voltage | 2000 V RMS (Input to Logic) |
| CMRR | 120 dB @ 60 Hz |
| Data Transfer | I/O Expander Bus (P2 Connector) |
| Power Consumption | 10 W (Typical) |
| Operating Temp | -20 °C to +60 °C (-4 °F to 140 °F) |
| Weight | 0.4 kg (Module) / 1.5 kg (Shipping) |
| Dimensions | 269.24 mm x 360.68 mm x 73.66 mm |
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