ABB Bailey NAMM01 Analog Master Module

The NAMM01 functions as a dedicated analog master module for ABB Bailey INFI 90 platforms. This ABB unit coordinates analog I/O processing across distributed control networks. We engineered this module to deliver precise signal acquisition and loop control in process applications.

Technical Specifications and Design Features

This analog master module weighs approximately 0.58 kilograms. Its dimensions measure 280 millimeters in height, 35 millimeters in width, and 280 millimeters in depth. The unit features a durable metal housing with integrated edge connectors for backplane installation.

Parameter	Specification
Manufacturer	ABB
Model	NAMM01
Category	Analog Master Module
Product Line	Bailey INFI 90
Processor Type	16-bit dedicated I/O processor
Analog Channels	Up to 64 (with expansion)
Communication Protocol	Module Bus
Scan Rate	10 ms per channel group
Power Supply	5V DC, 12V DC from backplane
Power Consumption	3.5 W maximum
Memory	32 KB RAM, 64 KB EPROM
Operating Temperature	0°C to 60°C
Dimensions (H x W x D)	280 mm x 35 mm x 280 mm
Weight	0.58 kg

Engineers will appreciate the master-slave architecture of the NAMM01. This module manages up to 64 analog channels through connected slave modules. Consequently, users can scale analog I/O capacity without modifying the main controller configuration.

Furthermore, the dedicated 16-bit processor handles all analog scanning independently. This design offloads I/O processing from the system master. The NAMM01 then communicates processed data to the controller via the Module Bus.

Interface and System Architecture

The NAMM01 installs directly into INFI 90 rack systems. This module connects to analog slave modules through the backplane bus. Each slave module provides local signal conditioning for field devices.

The unit operates from 5V and 12V DC power supplied through the backplane. It consumes a total of 3.5 watts during normal operation. For reference, other Bailey INFI 90 modules share this same form factor and installation method.

Data Processing and Storage

The NAMM01 includes 32 kilobytes of RAM for real-time data storage. This memory holds current analog values and status information for all connected channels. An additional 64 kilobytes of EPROM stores firmware and configuration parameters.

The module scans each channel group in 10 milliseconds. This scan rate supports fast process control loops and time-critical monitoring applications. Engineers can rely on this performance for demanding regulatory control tasks.

Diagnostics and Operational Reliability

The NAMM01 includes comprehensive diagnostic features for system monitoring. Status LEDs indicate power, communication activity, and fault conditions. The module performs continuous self-checks to detect configuration errors. These diagnostics simplify troubleshooting and ensure reliable system operation.