ABB NIMP01 Multi‑Function Processor Termination Module

‑ Power Supply：Powered via PCU rack back‑plane, +5 VDC；typical power consumption 2.1 W

‑ Mechanical Structure：standard INFI‑90 PCU slot plug‑in module, front‑panel locking handle；weight approx 0.82 kg

‑ On‑board Resources：serial port driving circuit, optical isolation unit, jumper configuration circuit, back‑plane bus interface, module self‑diagnosis circuit

‑ Communication Interface：two RS‑232‑C optically‑isolated interfaces；one port configurable for RS‑485；internal back‑plane interface connecting to MFP processor

‑ Galvanic Isolation：galvanic isolation for serial communication ports, isolation rating 2500 VAC

‑ Core Function：serial signal termination, electrical isolation, physical interface conversion between MFP processor and external serial devices

‑ Protection：serial‑port surge‑suppression protection

‑ Status LED Indicators：Power indicator, Module Fault indicator, communication channel status LED

‑ Weight：approx 0.82 kg

‑ Matches with IMMFP series multi‑function processor, provides physical serial interface channel for DCS controller.

‑ Supports connection to analog control stations (IISAC01), upper‑level host computer, printer and sequence‑of‑event recording equipment via RS‑232‑C / RS‑485 serial link.

‑ Hardware jumper selection: one channel can switch between RS‑232‑C isolated mode and RS‑485 non‑isolated mode for multi‑drop bus connection.

‑ Provides electrical isolation between controller internal logic and external serial equipment, suppresses field electromagnetic interference.

‑ Module self‑diagnosis monitors back‑plane power supply and hardware circuit, reports fault status to MFP processor.

‑ Cannot run independently; must cooperate with MFP multi‑function processor and INFI‑90 PCU rack. NIMP01 belongs to legacy DCS hardware, only compatible with INFI‑90 / Symphony‑Harmony system.

‑ Continuously monitors back‑plane power supply and on‑board hardware status. Fault will trigger fault LED and report fault word to MFP processor.

‑ No local historical‑data storage; module status and fault codes are read through DCS system or commissioning tool.

‑ Module hardware failure will cause loss of external serial communication channel of corresponding MFP processor; DCS internal control logic still runs normally.

‑ Back‑plane connector: inserts into PCU rack slot, communicates with IMMFP multi‑function processor via rack internal bus.

‑ Front‑panel serial ports: RS‑232‑C / RS‑485 interfaces for connecting external field devices.

‑ Mounting：insert into standard INFI‑90 PCU card rack slot

‑ Operating Temperature：‑10 ℃ ~ +60 ℃

‑ Storage Temperature：‑40 ℃ ~ +70 ℃

‑ Relative Humidity：5‑95 %RH, non‑condensing

‑ Protection Class：IP20, cabinet‑internal installation.

‑ Power off PCU rack before inserting or removing this module. Set hardware jumpers according to actual communication mode (RS‑232‑C / RS‑485). Incorrect jumper setting will lead to communication failure.

‑ For spare‑part replacement: verify model NIMP01; after installation check back‑plane power supply, verify serial‑port data interaction with external equipment. Hardware version mismatch may cause communication abnormality.

‑ Module fault results in failure of external serial communication for matched MFP processor.

Thermal‑power plant, chemical‑plant legacy control system; ABB Bailey INFI‑90 / Symphony‑Harmony DCS; industrial spare‑part for MFP processor serial‑interface termination unit.