Product Overview

The NTMP01 is a specialized Multi-Function Processor Termination Unit manufactured by ABB (formerly Bailey Controls) for the INFI 90® and Symphony Plus distributed control systems (DCS) . This PC board serves as the critical communication and wiring interface between high-performance controllers—including the Multi-Function Processor (MFP), Bridge Controller (BRC), and various interface modules like the IET and ICT—and plant equipment . As an integral component of the Bailey INFI 90 architecture, the NTMP01 provides the physical termination point for serial communication links, enabling data exchange between the control system and external devices such as computers, printers, and sequential events recorders .

The NTMP01 termination unit is designed to interface with IMMFP01, IMMFP02, and IMMFP031 Multi-Function Processors, providing the serial interface connection required for system configuration and field device communication . It features two isolated RS-232-C ports, one of which can be configured as a non-isolated RS-485 port, operating as either Data Communication Equipment (DCE) or Data Terminal Equipment (DTE) . The NTMP01 also provides the connection for a station serial communication link, allowing the MFP module to communicate with an IISAC01 Analog Control Station or NDCS03 Digital Control Station through an NTCS04 Control I/O Termination Unit . With its robust board-level design incorporating optical isolators, voltage regulators, and jumper-configurable ports, the NTMP01 ensures signal integrity and reliable data routing in demanding industrial environments .

 

Technical Specifications

Parameter Name	Parameter Value
Product Model	NTMP01
Assembly Number	6638919A1
Manufacturer	ABB (Bailey Controls)
Product Type	Multi-Function Processor Termination Unit
System Compatibility	ABB INFI 90, Symphony Plus, Network 90
Compatible Processors	IMMFP01, IMMFP02, IMMFP031, BRC, IET, ICT
Serial Ports	2x RS-232-C (isolated) OR 1x RS-232-C + 1x RS-485 (non-isolated)
Port Configuration	DCE or DTE configurable via jumpers
Control Station Link	One dedicated serial link (via NTCS04)
On-board Components	RS-232/RS-485 drivers/receivers, optical isolators, voltage regulators, DB-25/DB-9 connectors, fuse, LEDs, jumpers
Operating Temperature	0°C to 70°C
Relative Humidity	5% to 90% (non-condensing)
Dimensions	18.2 cm × 17.8 cm × 2.8 cm
Weight	0.3 kg (net)
Country of Origin	Sweden / Switzerland

 

Main Features and Advantages

Versatile serial communication capability: The NTMP01 provides two jumper-configurable serial ports that support either dual RS-232-C operation or a combination of RS-232-C and RS-485, offering flexibility for diverse field device connectivity requirements . When both ports are configured as RS-232-C, the NTMP01 provides isolation between the INFI 90 system and connected equipment, protecting against ground loops and electrical noise . The RS-485 configuration enables long-distance communication for distributed applications, making the NTMP01 suitable for installations where controllers and field devices are physically separated .

Comprehensive system integration support: The NTMP01 interfaces with multiple processor types including IMMFP01, IMMFP02, and IMMFP031 Multi-Function Processors, as well as BRC controllers and IET/ICT interface modules . This broad compatibility allows the NTMP01 to serve as a unified termination solution across diverse INFI 90 and Symphony Plus system configurations, simplifying spare parts management and reducing system complexity . The station serial communication link enables connection to IISAC01 Analog Control Stations and NDCS03 Digital Control Stations through the NTCS04 termination unit, extending the NTMP01 functionality to operator interface and control station applications .

Redundancy and diagnostic support: The NTMP01 features two LEDs that identify which MFP module (primary or redundant) is the active module, providing valuable diagnostic information for troubleshooting and maintenance . This indication capability is essential for high-availability systems where redundant processor configurations are deployed to ensure continuous operation. The NTMP01 also interfaces with the INIIT02 INFI-NET to INFI-NET Transfer Module and INICT03 INFI-NET to Computer Transfer Module, supporting bidirectional communication through the serial ports for system data and diagnostic functions .

Rugged PC board construction: The NTMP01 is built as a robust PC board assembly designed to fit standard Bailey INFI 90 cabinets, incorporating optical isolators for signal integrity, voltage regulators for stable operation, and high-quality connectors for reliable field wiring . The board is designed for passive cooling, ensuring long-term reliability without the need for internal fans . The NTMP01 is constructed with PVC or non-PVC cable insulation rated for 80°C to 90°C, suitable for installation in industrial environments with varying temperature conditions .