IMASM02 | ABB Bailey Isolated Analog Input Module

Overview

The ABB Bailey IMASM02 is an Analog Input Slave Module designed for INFI 90 process control systems. It acquires low-level analog signals from field instruments such as thermocouples, millivolt sources, and resistance inputs, and transmits the measured data to the Analog Master Module for processing and control.

Technical Specifications

• Product Type: Analog Input Slave Module
• Part Number: IMASM02
• System Compatibility: ABB Bailey INFI 90 / Network 90
• Power Supply: +5 VDC (±5%)
• Additional Supply: +15 VDC / -15 VDC / +24 VDC (via TU/TM)
• Power Consumption:
  • +5 VDC: 400 mA
  • +15 VDC: 80 mA
  • -15 VDC: 45 mA
  • +24 VDC: 5 mA
• Power Dissipation:
  • +5 VDC: 2.0 W
  • +15 VDC: 1.2 W
  • -15 VDC: 0.7 W
  • +24 VDC: 0.015 W
• Input Channels: 8 low-level analog inputs
• Supported Signal Types:
  • Thermocouple: E, J, K, R, S, T (including Chinese E, S)
  • Millivolt: -100 mV to +100 mV
  • Resistance: up to 200 kΩ
• Normal Mode Rejection: ≥ 80 dB at 60 Hz
• Common Mode Voltage: ±250 V (maximum)
• Common Mode Rejection: ≥ 120 dB at 60 Hz
• Termination Modules:
  • NTAI02
  • NTTA01
  • NIAI02
• Installation: Standard INFI 90 Module Mounting Unit

Key Features

• Supports multiple types of low-level analog input signals
• Provides high accuracy signal acquisition for process control
• Integrates with IMAMM series Analog Master Modules
• Supports industrial noise rejection for stable measurement
• Compatible with standard INFI 90 termination units
• Designed for distributed analog input applications
• Supports high isolation common-mode voltage handling

Installation Notes

• Install the module in a standard INFI 90 module mounting unit
• Connect field wiring through approved termination units (NIAI02 / NTAI02 / NTTA01)
• Verify power supply rails before energizing the system
• Ensure proper grounding and shielding of analog signal wiring
• Perform system calibration according to ABB INFI 90 procedures
• Confirm signal integrity during commissioning and startup