Description

Overview

The ABB INBTM01 is a dedicated termination component used in ABB Bailey INFI-90 and compatible distributed control systems. It is installed at the end of communication bus segments to maintain electrical stability and ensure proper signal integrity across the network.

By providing controlled impedance and reducing signal reflections, this module helps maintain clean digital communication in multi-rack and long-distance control architectures. It is a passive yet critical element in ensuring reliable system-wide data exchange.

Functional Characteristics

• Provides end-of-line termination for INFI-90 communication buses

• Matches electrical impedance to prevent signal reflections

• Stabilizes waveform quality across communication lines

• Improves immunity to electrical noise and interference

• Supports reliable operation in extended or multi-rack installations

• Protects communication integrity of upstream modules

Technical Specifications

Electrical Characteristics

• Module Type: Passive termination unit

• Power Consumption: None (passive device)

• Termination Network: Fixed impedance design

• Supported Bus: INFI-90 system communication bus

Signal Integrity Functions

• Impedance Matching: Ensures correct line termination

• Reflection Control: Minimizes signal bounce and distortion

• Noise Suppression: Enhances communication stability

• Signal Conditioning: Passive electrical stabilization

System Compatibility

• Supported Platforms:

• INFI-90

• NET90

• Symphony Harmony systems

• Function: End-of-line bus termination

Environmental Conditions

• Operating Temperature: 0°C to +60°C

• Storage Temperature: –40°C to +85°C

• Humidity: 5% to 95% non-condensing

Mechanical Specifications

• Dimensions: 7.0 × 2.0 × 7.0 in (17.8 × 5.1 × 17.8 cm)

• Weight: 0.4 kg

• Form Factor: Eurocard module

• Mounting: INFI-90 Module Mounting Unit (MMU)

Front Panel Features

• Identification label

• Optional status indicator (revision dependent)

Application Areas

The ABB INBTM01 is used wherever stable bus termination is required in distributed control architectures:

• Power generation plants (thermal, hydro, nuclear)

• Petrochemical and refinery systems

• Pulp and paper production facilities

• Steel and heavy industrial automation networks

• Large-scale distributed control systems with long cable runs

FAQ

What is the main purpose of the INBTM01?
It provides proper electrical termination for the INFI-90 communication bus to ensure stable signal transmission.

Is it an active or passive module?
It is a passive component with no power consumption.

Where should it be installed?
It must be placed at the end of each communication bus segment.

Why is bus termination important?
It prevents signal reflections and maintains communication integrity across the control network.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems