ABB REX640_COM1004 Multi-Port Communication Module for Relion REX640 All-in-One Protection & Control IED
ABB REX640_COM1004 Multi-Port Communication Module for Relion REX640 All-in-One Protection & Control IED
Manufacturer Background: ABB Relion series modular communication card COM1004, dedicated expansion communication module for REX640 medium voltage integrated protection control relay; supports multi-protocol substation automation, IEC61850, Modbus, IRIG-B time synchronization, fiber serial communication, widely used in feeder, transformer, generator, busbar protection cabinet systems, fully compliant with IEC 60255, IEC 61850 standards, built-in industrial cyber security protection.
Part Number Breakdown: REX640_COM1004
- REX640 = Host IED platform: Relion all-in-one medium voltage protection relay
- COM = Communication module series
- 1004 = Module hardware variant No.4, rich multi-port mixed Ethernet + serial + fiber interface configuration
Product Type: Hot-swappable modular communication plug-in card for REX640 relay slot; hybrid multi-media communication board integrating copper Ethernet, SFP fiber protection channel, RS485 time sync, fiber UART serial port, LHMI local human-machine interface dedicated port, multi-protocol concurrent operation support.
Matching Host Device: ABB Relion REX640 standard / narrow cabinet protection IED, compatible with all REX640 firmware versions PCL1/PCL2; matches PCM600 configuration software for parameter setting and commissioning.
Core Hardware Overview:
1. Integrated Port Layout Definition (COM1004 Exclusive):
- 1 × RJ45 LHMI dedicated local HMI port (100BASE-TX, for front panel touch screen connection)
- 2 × General RJ45 copper Ethernet ports (100BASE-TX, station bus, IEC61850 MMS/GOOSE/SMV, Modbus TCP)
- 1 × LD-SFP pluggable fiber slot (100BASE-FX, single/multi-mode SFP for differential protection pilot channel)
- 1 × RS485 dual-function terminal: Modbus RTU serial + IRIG-B time synchronization input
- 1 × FO UART fiber optic serial port (fiber Modbus RTU, remote serial communication isolation)
2. Electrical Interface Spec: All Ethernet ports 10/100M auto-negotiation; SFP slot supports LC single/multimode fiber transceivers; RS485 isolated 2kV galvanic isolation; FO UART optical isolation eliminates ground loop interference.
3. Supported Communication Protocols: IEC 61850 Ed2.0 (MMS, GOOSE, Sampled Values), Modbus TCP, Modbus RTU (wired RS485 / fiber FO UART), IEC 60870-5-104, IEC 60870-5-103, IRIG-B DC time sync, DNP3 optional license.
4. Mechanical Feature: Standard REX640 rear slot pluggable module, hot-swap supported without powering off the whole relay; metal shielding housing, anti-EMI design for substation heavy interference environment.
5. Environmental Ratings: Operating temperature -5℃ ~ +50℃ inside cabinet; storage -25℃ ~ +70℃; relative humidity 5%–95% non-condensing; IEC 60068 vibration & shock certified for power plant substation cabinets.
6. Safety & Insulation: Communication circuit withstand voltage 1kV 50Hz 1min; surge protection 1kV 1.2/50μs; cyber security functions: access control, communication data encryption, port filtering, audit log record.
7. Interchangeability: COM series modules interchangeable between same-size REX640 chassis; COM1004 can replace COM1001/1002/1003/1005 via reconfiguration in PCM600 software.
1. Product Overview
REX640_COM1004 is the full-function multi-media communication expansion module for ABB Relion REX640 protection relay, equipped with the most complete mixed copper/fiber Ethernet and serial interfaces among COM series variants. It integrates local HMI port, dual general Ethernet, dedicated fiber differential protection SFP slot, RS485 Modbus & IRIG-B time synchronization, and fiber serial UART port, realizing all mainstream substation automation communication functions on single plug-in card.
Dual copper Ethernet ports support parallel operation of IEC61850 station bus and Modbus TCP, realizing separation of protection data and monitoring data to improve system reliability. Independent LD-SFP fiber slot provides dedicated optical channel for line differential pilot protection, avoiding bandwidth occupation of station bus. The dual-purpose RS485 terminal realizes both Modbus RTU remote monitoring and IRIG-B unified time synchronization for whole station IEDs. FO UART fiber serial port offers fully isolated long-distance serial communication, eliminating ground potential difference interference in large substations.
All communication ports support concurrent multi-protocol operation, compatible with mainstream substation SCADA, remote control center, fault recorder and synchronization devices. Hot-swap plug-in design enables module replacement without stopping relay protection function, greatly shortening on-site maintenance downtime. Equipped with industrial multi-layer EMI shielding and built-in surge suppression circuit, stable operation under strong electromagnetic interference environment of high-voltage switchgear room, fully compliant with modern digital substation construction standards.
