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ABB IISAC01

ABB IISAC01 is an Analog Control Station (SAC) used in ABB’s INFI 90 / Symphony distributed control system (DCS). It is designed for single-loop process control and operator interaction in industrial automation systems.

1. Core Function

The IISAC01 is mainly used as an operator control panel / single-loop controller station, providing:

• Single-loop process control (e.g., pressure, flow, temperature)
• Manual/Auto (MAN/AUTO) mode switching
• Display of process variables (PV), setpoint (SP), and output (OUT)
• Communication with higher-level controllers (e.g., Harmony / INFI 90 controllers)

2. System Position

This module is typically part of:

• ABB Bailey INFI 90 / Net 90 DCS system
• Early ABB Symphony control architecture

It communicates with I/O modules such as:

• CIO-100
• IMCIS12
• IMQRS12

3. Key Features

• Three high-resolution bargraph displays (PV / SP / OUT)
• 8-character numeric display
• RS-485 serial communication (5 or 40 kbaud)
• Automatic bypass function
• Flush-mounted panel design
• Single-loop control station capability

4. Electrical & Physical Data (Typical)

• Operating voltage: 21.6–27 VDC
• Power consumption: approx. 540 mA @ 24 VDC
• Analog output: 3–21 mA
• Mounting: panel-mounted (flush mount)
• Dimensions: approx. 72 × 144 × 381 mm
• Operating temperature: 5°C–40°C (typical range may vary)

5. Applications

• Petrochemical and chemical process control
• Power plant monitoring systems
• Metallurgy and industrial automation
• Legacy DCS operator control systems