Description
Product Description
The ABB IISAC01 Analog Control Station is a panel-mounted, single-loop process controller designed for integration within ABB Harmony, INFI-90, and Net 90 distributed control systems. It combines loop control functionality with a local operator interface, allowing direct interaction with process variables such as temperature, flow, pressure, and level.
This unit supports both automatic and manual control modes, enabling operators to adjust setpoints, monitor loop performance, and override control strategies when required. Communication with the control system is achieved via RS-485 serial links through interface modules such as CIO-100, IMCIS12, or IMQRS12.
The IISAC01 is recognized for its high-visibility display technology and stable analog signal handling, making it suitable for continuous process industries where reliability and operator clarity are essential.
Display and Operator Interface
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Three gas-plasma bar graph indicators for real-time visualization
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Process Variable (PV) and Setpoint (SP): 200-segment resolution (approx. 0.5%)
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Output indication: 100-segment resolution (approx. 1.0%)
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8-character alphanumeric display using 14-segment format
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Local mode selection with manual/automatic switching and bypass capability
Communication Interface
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Serial Communication: RS-485
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Supported Baud Rates: 5 kbaud and 40 kbaud
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High-speed mode (40 kbaud) compatible with IMMFP11 / IMMFP12 controllers (firmware dependent)
Control and Signal Handling
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Control Type: Single-loop analog control
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Output Signal: 3–21 mA current loop
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Maximum Load Resistance: 600 Ω
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Maximum Load Inductance: 600 mH
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Output Accuracy: ±2.0% of span at 25°C
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Digital-to-Analog Resolution: 8-bit
Electrical Characteristics
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Supply Voltage: 21.6 to 27.0 VDC
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Typical Current Consumption: approx. 540–600 mA at 24 VDC
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Power Consumption: approx. 13–14 W
Mechanical Specifications
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Dimensions: approx. 10.2 × 15.2 × 25.4 cm
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Weight: 0.9 kg
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Mounting: Panel or console installation
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Status: Discontinued by manufacturer (legacy support applications)
System Compatibility
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ABB Harmony Rack systems
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ABB INFI-90 distributed control systems
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ABB Net 90 architecture
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Interface modules: CIO-100, IMCIS12, IMQRS12
Typical Applications
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Local loop control in power plants and utilities
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Process variable regulation in chemical and petrochemical facilities
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Operator interface for analog control loops in legacy DCS systems
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Retrofit or maintenance of existing INFI-90 installations
FAQ
What type of control does the IISAC01 provide?
It is designed for single-loop analog control, allowing operators to manage one process loop independently with both automatic and manual modes.
Is the IISAC01 still available from ABB?
No, this model has been discontinued. It is typically available through surplus or refurbishment channels for legacy system support.
How does the module communicate with the control system?
It uses RS-485 serial communication via compatible ABB interface modules.
