IMASI03 | ABB Bailey Analog Input Slave Module

ABB Bailey IMASI03 Analog Input Slave Module

The ABB Bailey IMASI03 is an Analog Input Slave Module for the INFI 90 distributed control system. It provides high-accuracy analog signal acquisition from field transmitters and sensors, converting raw analog signals into digital data for processing by the Multi-Function Processor (MFP) or other INFI 90 controllers.

Key Specifications

• Part Number: IMASI03
• Product Type: Analog Input Slave Module
• Series: INFI 90 / Symphony
• Manufacturer: ABB / Bailey Controls
• Input Types: Current: 4–20 mA; Millivolt: -100 mV to +100 mV, 0 to 100 mV
• Power Requirements: +5 VDC, +15 VDC; 4.0 VA total
• Net Weight: 0.7 kg (1.54 lbs)
• Operating Temperature: 0°C to 60°C
• Storage Temperature: -40°C to 85°C
• Humidity: 5% to 95% non-condensing
• Mounting: INFI 90 MMU rack slot

Features & Benefits

1. Multi-Range Input Support: Accepts both current (4–20 mA) and millivolt signals, providing flexibility for diverse sensor types.
2. High Accuracy: Precision A/D conversion ensures reliable process variable measurement for critical control loops.
3. Backplane Integration: Communicates directly with MFP modules via INFI 90 module bus—no additional wiring required.
4. Modular Design: Hot-swappable in compatible racks for reduced maintenance downtime.

Applications

• Temperature, pressure, and flow transmitter monitoring
• Level and analytical sensor signal acquisition
• Process variable logging and trending

FAQ

Q: What is the difference between IMASI03 and IMASI02?
A: The IMASI03 is an updated revision of the IMASI02 with improved signal conditioning and expanded input range support. Both fit standard INFI 90 racks.

Q: Does IMASI03 support thermocouple inputs?
A: The IMASI03 supports millivolt inputs which can interface with thermocouple transmitters. For direct thermocouple termination, use the NTAI04 RTD Termination Unit with appropriate slave modules.

Installation Guide

1. Install IMASI03 into an available INFI 90 MMU slot.
2. Connect field analog signals to the termination unit (e.g., NTAI02) per wiring diagram.
3. Verify signal polarity and shield grounding.
4. Configure channel scaling in MFP function blocks.
5. Calibrate against known reference signals.

Selection Tips

• Signal Type: Confirm your field devices output 4–20 mA or millivolt signals.
• Termination Unit: Pair with NTAI02 or compatible termination unit for proper field wiring interface.