ABB NIMP01 | INFI 90 MFP Termination Module

Description

Product Overview

The ABB Bailey NIMP01 is a Multi-Function Processor Termination Module used with the Bailey INFI 90 control-system architecture. Its job is to provide the external termination and interface circuitry required by Multi-Function Processor modules and related serial communication functions. It is therefore not an analog I/O card or a standalone processor; it is a supporting termination device that connects controller/interface electronics to external communication wiring. ABB documentation specifically identifies the NIMP01 as the termination module associated with MFP and related interface applications.

The ABB NIMP01 is also used in communication arrangements involving INFI-NET transfer modules and control stations. ABB documentation for the INFI-NET computer interface shows the IMMPI01 Multi-Function Processor Interface connecting through an NIMP01 Multi-Function Processor Termination Module, while separate documentation identifies the NIMP01/NIMP02 as termination hardware for INFI-NET-to-INFI-NET transfer applications.

The ABB Bailey NIMP01 is particularly important in older INFI 90 installations because an apparently simple termination fault can interrupt otherwise healthy controller or serial-communication hardware. The module should therefore be evaluated together with its associated MFP/interface module, NKTU cable, jumper configuration, and connected field or station equipment rather than treated as an isolated replacement component.

Technical Specifications

ABB’s documentation confirms that is used with MFP modules and that its serial interfaces and operating configuration depend on the specific application.

Main Features and Advantages

Multi-Function Processor Termination

The defining role of the is termination of the external connections associated with Bailey Multi-Function Processors. This allows the MFP’s communication ports to be connected to external devices without placing those termination functions directly on the processor board.

ABB’s MFP documentation specifically states that the processor’s serial ports require NTMP01 or termination devices for connection.

Serial Communication Support

The module can participate in serial communication arrangements using RS-232-C and, depending on the configuration, RS-485-related connections. This makes the relevant to control-station communication, diagnostic connections, and INFI-NET transfer applications.

INFI-NET Interface Applications

The is used with INIIT02 INFI-NET-to-INFI-NET Transfer Modules in certain system architectures. ABB documentation shows the transfer module connected through P3 to an termination module.

Control Station Communication

The also provides the serial station connection associated with MFP communication to devices such as the IISAC01 Analog Control Station and NDCS03 Digital Control Station.

System-Level Compatibility

The module’s usefulness is determined by the surrounding Bailey architecture. It is therefore best considered a system-specific interface component rather than a generic serial breakout device.

NIMP01

Application Scenarios

• Bailey INFI 90 DCS
• Network 90 control systems
• MFP controller communication
• IISAC01 analog control stations
• NDCS03/NDIS01 control stations
• INFI-NET-to-INFI-NET interfaces
• INFI-NET-to-computer interfaces
• Legacy DCS maintenance
• Serial diagnostic interfaces

Engineer’s Guide: Field Pitfalls

WARNING 1 — is not the processor

The is a termination module. Do not confuse it with the MFP itself.

The MFP contains the processor and control logic; provides the external interface/termination functions. ABB’s MFP documentation clearly distinguishes the two.

WARNING 2 — Check jumper configuration

The communication-port behavior can depend on hardware jumper/dipshunt settings. ABB documentation for INFI-NET interfaces specifically references configuration for determining DTE/DCE and port functions.

A replacement unit should therefore be configured to match the removed module before commissioning.

WARNING 3 — Cable type matters

The is normally connected to the associated module through an NKTU-series cable. ABB documentation identifies NKTU02 for IMMPI01-to- applications.

Do not assume a visually similar cable has the same pinout.

WARNING 4 — Do not confuse with NTMP01

Both are termination devices used with Bailey MFP/interface equipment, but they are not interchangeable by model number alone. The installed interface, cable, jumper arrangement, and application should determine the correct replacement.

WARNING 5 — A failed termination module can look like a controller failure

If an MFP loses serial communication, do not immediately condemn the processor. Check:

• condition
• NKTU cable
• Connector seating
• Jumper/dipshunt settings
• RS-232/RS-485 wiring
• DTE/DCE configuration
• Associated MFP port
• Control-station wiring

This is especially important with older INFI 90 systems.

Frequently Asked Questions

What is ABB ?

The is a Multi-Function Processor Termination Module used in Bailey INFI 90/Network 90 control architectures.

Is a communication module?

It is more accurately a termination/interface module supporting serial communication from MFP and related interface modules. It is not the primary network processor.

What does connect to?

Depending on the application, it can connect to MFP-related modules, INFI-NET transfer hardware, computer-interface hardware, and control stations.

Does support IISAC01?

Yes. Bailey documentation identifies the as part of the serial station communication arrangement used for devices such as the IISAC01 Analog Control Station.

Is interchangeable with NTMP01?

Do not assume so. Both are termination devices, but the correct choice depends on the specific MFP/interface, cable, and system configuration.

What should be checked before purchasing a replacement?

For a used or refurbished , verify:

1. Exact model.
2. Hardware revision.
3. Connector condition.
4. Jumper/dipshunt configuration.
5. RS-232/RS-485 configuration.
6. DTE/DCE setting where applicable.
7. NKTU cable compatibility.
8. Associated MFP/interface module.
9. Control-station communication.
10. INFI-NET transfer communication where applicable.
11. Insulation/continuity of external wiring.
12. Successful communication under actual system conditions.

Bottom line: ABB Bailey is a Multi-Function Processor Termination Module, not an I/O or processor card. Its main job is to provide the external serial/interface termination required by MFP and related INFI 90 communication hardware. The , associated NKTU cable, jumper configuration, and connected MFP/interface module should be treated as one communication chain when troubleshooting or replacing the part.