ABB REM543CG212AAAA Process Control Module

ABB REM543CG212AAAA Integrated Protection and Control IED for Rotating Electrical Machines (Process Protection Control Module)

I. Basic Model Information

Complete Model: REM543CG212AAAA

Product Series: ABB Relion® REM543 Machine Protection Terminal

Suffix CG212AAAA Meaning: Hardware power supply specifications, communication interface, RTD analog expansion, and complete factory software configuration

Origin: Sweden

Lifecycle: Officially discontinued by the manufacturer in 2022 (Obsolete). No brand new original mass-produced parts are available; only brand new inventory and salvaged/repaired spare parts are circulating in the market. Replacement/upgrade models are the ABB REG670 / REG650 series motor protection devices.

Equipment Positioning: Integrated relay protection + process monitoring + logic control IED, not a general-purpose DCS. The plug-in card is a local intelligent protection unit for switchgear, often categorized as a power process control module.

II. Core Application Scenarios

Designed specifically for complete protection, measurement, control, and sequential control logic of rotating electrical equipment:

Power Plants: Main protection for small and medium-sized hydroelectric/diesel/steam turbine generators and generator-transformer units

Industrial Power Distribution: Medium-voltage high-power asynchronous motors and synchronous motors (pumps, fans, mills, crushers, compressors)

Marine Engineering and Shipbuilding: Marine generators and propulsion motors (with ship classification certification)

Waste heat cogeneration, self-contained power stations, and underground mobile substation motor protection

III. Hardware I/O and Electrical Specifications

1. Auxiliary Power Supply (CG212 corresponding specifications)

AC/DC universal wide range: 48～250V AC / 24～250V DC

Power Consumption: Standby <15W, Full Load Operation <22W

2. Current Transformer Measurement Input

Current CT: 2 sets of three-phase CT circuits, supporting 5A/1A standard current transformers

Voltage VT: 1 Three-phase voltage input, compatible with PT voltage measurement and synchronization detection.

Supports Rogowski coil and ABB dedicated voltage divider digital sensor access.

3. Switching channels:

15 isolated binary DI channels (circuit breaker position, disconnector, interlock, local/remote switching, fault signal)

12 relay DO channels (trip, close, alarm, interlock, signal relay), with trip circuit monitoring function.

4. Analog expansion (AAAA standard RTD/AI/AO module):

RTD temperature input: supports PT100, monitoring motor stator, bearing, and ambient temperature.

General analog input: 0/4–20mA, 0–10V voltage signal.

4 isolated analog outputs 0–20mA: uploads process data such as power, current, and temperature to PLC and upper-level systems.

IV. Complete protection functions (motor + Generator Dedicated)

Motor Protection

Thermal Overload Inverse Time Protection (49), Locked Rotor Protection, Start-up Timeout Protection, Start-up Count Accumulation Lockout

Phase Imbalance/Phase Loss Protection, Zero Sequence Ground Fault 50N/51N

Overcurrent, Voltage Lockout Overcurrent, Overvoltage 27, Undervoltage 59, Frequency Over-limit

Low Power Reverse Protection (Prevents Motor from Driving Power Generation Backwards)

Generator Dedicated Protection

Differential Protection, Loss of Excitation/Under-excitation Protection, Over-excitation Protection

Low Impedance Backup, Reverse Power Protection, Stator Grounding, Rotor Grounding Protection

Frequency Protection, Voltage Imbalance, Synchronization Grid Connection Logic Control

General Support: 8-channel Programmable Alarm LED, Fault Recording, Time-stamped Event Recording, Disturbance Data Storage

V. Process Control and Logic Capabilities

Built-in Complete Programmable PLC Logic, Replacing Additional Small Controllers:

Circuit Breaker, Disconnect Switch Local/Remote Opening and Closing Control, Electrical Interlocking Logic

Unit Start-up and Stop Sequential Control, Automatic Synchronization, Auxiliary Machine Linkage

32-channel LON Bus Virtual Remote I/O, reducing hardwiring within the cabinet. Customizable alarm logic, trip interlocking, and action condition configuration, with accompanying Relay Mimic Editor configuration software.

VI. Communication Interfaces (CG212 standard configuration)

SPA Bus (ABB dedicated for internal protection)

LONWORKS Bus (interconnection of bay-level devices)

RS485 MODBUS RTU (interfacing with third-party PLCs and SCADA systems)

Expandable SPA-ZC400 gateway to implement IEC 61850 digital substation protocol

Front panel local debugging serial port for downloading configuration and reading fault waveforms.

VII. Environmental and Mechanical Parameters

Installation: Standard 19-inch switchgear embedded installation

Operating Temperature: -20℃ to +70℃, suitable for wide-temperature cabinets

Protection Rating: IP54 (front panel), IP20 (rear terminals)

Protection coating, meeting ISA S71.04 G3 industrial corrosion protection, marine certified

EMC Resistance: Complies with IEC 60255 power relay standards, ensuring stable operation of the strong electromagnetic switchgear.