ABB REM545BG229AABA REV:B｜Machine Protection Terminal｜

REM545BG229AABA REV:B

Temperature Monitoring and Process Interface
Optional RTD/mA I/O Module

An optional analog input/output module supports:

Temperature Monitoring

RTD inputs for:

Stator winding temperature
Bearing temperature
Ambient temperature
Analog Outputs

Provides:

mA outputs
Interface connection to process control systems
Integration with DCS/SCADA systems
Condition Monitoring Functions

The terminal includes equipment health monitoring functions.

Circuit Breaker Monitoring

Monitors:

Breaker operating condition
Trip operation performance
Mechanical wear indicators
Trip Circuit Supervision

Checks:

Trip coil circuit integrity
Breaker trip path availability
Internal Self-Supervision

Continuously monitors:

Hardware status
Software operation
Internal communication
Diagnostic conditions
Communication Interfaces

The machine terminal provides three communication interfaces:

Interface Purpose
Local communication interface Connection to engineering PC for configuration and maintenance
Remote communication interface 1 Communication with substation control systems
Remote communication interface 2 Communication with substation monitoring systems

Communication functions support:

Remote operation
Data acquisition
Event reporting
Engineering access
Functional Summary
Category Functions
Application Generator, synchronous motor, large asynchronous motor protection
Measurement Inputs CT/VT, current sensors, voltage dividers
HMI Integrated graphic display or external display module
Protection Overcurrent, earth fault, voltage, differential, thermal, frequency, power, impedance
Motor Protection Start supervision, unbalance protection, reverse power, underexcitation
Control Local/remote switching control, synchro-check, interlocking
Measurement Current, voltage, power, energy, frequency, power factor
Condition Monitoring Breaker monitoring, trip circuit supervision, self-diagnostics
Process Interface Optional RTD/mA module
Communication Three communication interfaces
Engineering Application Summary

This integrated machine terminal functions as a complete generator and motor protection platform, replacing multiple standalone relays by combining:

High-performance electrical protection
Machine-specific protection algorithms
Local and remote control
Advanced measurement
Condition monitoring
Communication with automation systems

It is typically applied in industrial power plants, utility generation facilities, and large motor-driven process industries where high availability and comprehensive machine supervision are required.