The ABB Bailey IISAC01 Analog Control Station is a front‑panel operator interface designed for real‑time monitoring and manual control within Infi 90 distributed control systems. It provides high‑visibility gas‑plasma bar graph displays, analog input/output handling, and RS‑485 communication with controlling modules, making it suitable for turbine, boiler, and process control applications requiring precise local interaction.
Technical Specifications
Display & Interface
Bar Graph Displays:
Three gas‑plasma bar graphs
200‑segment indicators for process variable and setpoint (0.5% resolution)
100‑segment indicator for output (1.0% resolution)
Alphanumeric Display:
8‑character, 14‑segment display
Bypass Mode:
Automatic or operator‑selected from faceplate
Communication
Protocol: RS‑485 serial link
Baud Rates: 5 kbaud or 40 kbaud
40 kbaud Compatibility: Requires IMMFP11/IMMFP12 with firmware revision E_0 or later
Power & Electrical
Supply Voltage (at termination device): 21.6–27.0 VDC
Power Consumption: 540 mA at 24 VDC
Analog Output
Current Range: 3–21 mA
Load: 600 Ω maximum
Inductance: 600 mH maximum
Accuracy: 2.0% of span at 25°C
D/A Resolution: 8 bits
Analog Input
Voltage Range: +0.75 to +5.25 VDC
Input Impedance: >10 MΩ
Accuracy: 1.5% of span at 25°C
A/D Resolution: 8 bits
Normal Mode Rejection: ≥75 dB at 60 Hz
Common Mode Rejection: ≥90 dB at 60 Hz
Common Mode Voltage: ±5 VDC maximum
Electric Drive Outputs
R/L Contact: 100 mA max (sink or source)
M/A Signal: 100 mA max (sink or source)
M/A Power: 21.6–27 VDC
Environmental Ratings
Operating Temperature: 5–40°C
Humidity:
Operating: 20–80% non‑condensing
Storage: 10–95% non‑condensing
Atmospheric Pressure: Sea level to 3 km
Air Quality: Non‑corrosive
EMI/RFI Guidance: Keep communication equipment at least 2 m away
Certification: CSA certified for ordinary (non‑hazardous) locations
