ABB Machine Terminal REM 545

The ABB Machine Terminal REM 545 is an integrated rotating-machine protection and control terminal designed for generator and motor applications. It combines protection, measurement, control, supervision and condition-monitoring functions within a single machine terminal.

The REM 545 was designed for the protection of generator and generator-transformer units in small and medium-power diesel, hydroelectric and steam power plants, as well as large or important medium-voltage synchronous and asynchronous motors. ABB also identifies the REM 545 as certified for marine and offshore use.

ZE MARINE supplies used and refurbished marine automation, electrical protection and control equipment, subject to current stock and condition.

ABB REM 545 Specifications

The exact REM 545 configuration depends on its hardware and software order number. ABB’s technical documentation shows that REM 543 and REM 545 configurations can differ according to available inputs and outputs, power-supply options, functionality level and other configuration details.

ABB REM 545 Machine Protection Terminal

The REM 545 is designed as an integrated protection system for rotating electrical machines. It can provide protection against abnormal electrical and operating conditions affecting generators and motors.

Documented protection applications include:

• Short-circuit protection
• Earth-fault protection
• Overcurrent protection
• Unbalanced-load protection
• Over-temperature protection
• Over-voltage protection
• Under-voltage protection
• Over-frequency protection
• Under-frequency protection
• Over-excitation protection
• Under-excitation protection
• Motor starting supervision
• Stall protection
• Generator motoring protection

The exact protection functions available depend on the configured functionality level and application.

Generator Protection and Control

The ABB REM 545 can be used as the main protection system for generator and generator-transformer units. Its integrated design combines measurement and protection functions with control and automation capabilities.

The terminal can measure parameters including:

• Phase currents
• Phase-to-phase voltages
• Phase-to-neutral voltages
• Neutral current
• Residual voltage
• Frequency
• Power factor
• Active power
• Reactive power
• Energy

These measurements can be used by the configured protection, control and monitoring functions of the machine terminal.

ABB REM 545 Marine Applications

The REM 545 is particularly relevant to marine equipment sourcing because ABB’s product information identifies the REM 54 series as suitable for marine environment solutions, and the current ABB legacy page specifically lists marine and offshore certification for REM 545.

Potential applications include:

• Marine generator protection
• Shipboard generator control
• Marine power management systems
• Generator-transformer protection
• Medium-voltage motor protection
• Propulsion-related electrical systems
• Marine switchgear protection
• Offshore power systems
• Diesel generator installations
• Industrial rotating machinery

REM 545 Control and Monitoring Functions

In addition to protection functions, the REM 545 provides control and monitoring capabilities.

The machine terminal supports local and remote control of switching objects, including synchro-check, status indication and interlocking functions. It also includes PLC functionality that can be configured for automation and sequence logic applications.

The terminal’s communication capabilities include SPA bus, LON bus and MODBUS, depending on the configuration.

REM 545 HMI and Display

The REM 545 includes a fixed man-machine interface designed for local operation and monitoring. ABB documentation describes an HMI with a large graphic display and control buttons.

The HMI can be used for everyday measurements and monitoring, while technical-level functions provide access to more advanced machine-terminal programming and configuration.

ABB REM 545 Inputs and Outputs

The exact I/O configuration depends on the selected hardware version.

ABB technical documentation shows that the REM 545 can include multiple digital inputs and outputs together with measurement channels and optional RTD/analog functionality.

An optional RTD/analog module can provide additional channels for applications such as:

• Stator winding temperature
• Bearing temperature
• Ambient temperature
• Analog measurement signals

The correct I/O arrangement should therefore be confirmed from the complete REM 545 order number before replacement.

ABB REM 545 Communication

Communication is an important part of the REM 54 machine-terminal architecture.

Depending on configuration, the REM 545 supports:

• SPA bus
• LON bus
• MODBUS
• Optical serial communication
• Higher-level monitoring systems
• Inter-terminal communication

ABB documentation also describes the use of LON inter-bay communication together with PLC functions to reduce hardwiring between machine terminals.

REM 545 Replacement and Compatibility

The ABB REM 545 is a legacy product, so replacement compatibility should be checked carefully before purchase. ABB states that the REM 545 is not an active product since 2022.

When sourcing a replacement unit, buyers should provide:

• Complete REM 545 nameplate photograph
• Full order number
• Hardware version
• Software revision
• Functionality level
• Auxiliary power-supply specification
• I/O configuration
• Existing system photographs
• Required quantity

The order number is particularly important because ABB documentation indicates that the REM 54 order number identifies the machine-terminal type together with hardware, software, power-supply and functionality information.

ABB REM 545 Legacy Equipment

Because the REM 545 is no longer an active product, used and refurbished equipment can be relevant for operators maintaining existing installations.

A replacement unit may be considered for:

• Existing marine generator protection systems
• Ship electrical maintenance
• Offshore electrical systems
• Industrial generator protection
• Legacy ABB protection systems
• Motor protection installations
• Spare-parts inventory
• Emergency replacement requirements

Compatibility should always be confirmed using the complete product identification before purchase.

Official ABB REM 545 Reference

For additional technical information, refer to the official ABB REM 545 Machine Protection Terminal page.

The ABB page confirms the REM 545 application, protection functions, PLC capabilities, communication features and marine/offshore certification. It also identifies the product as not active since 2022.

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Related ABB Marine Automation Products

ZE MARINE also supplies ABB automation, control and electrical equipment that may be relevant to generator protection and marine automation requirements:

• ABB SYNPOL D CMA-120 Basic Controller Panel
• ABB Unitrol 1000 Automatic Voltage Regulator
• ABB ICMK14F1-L13.0 Advant Controller 31 Remote Unit
• ABB TC50 Control Panel
• ABB XI16E1-E4.0 Extension Input Module
• ABB XO08R1 Relay Extension Output Module

Explore additional equipment in our Ship Automation Products category.

Used & Refurbished ABB Marine Automation Equipment

ZE MARINE supplies used, reusable and refurbished ABB marine automation and electrical equipment for shipowners, ship managers, shipyards, marine engineers, repair companies and marine equipment traders.

Available equipment may include generator protection terminals, control panels, automation modules, relay equipment, voltage regulators, input/output modules and other marine electrical and automation components.

Product condition and availability vary according to current stock. Buyers are encouraged to request photographs, nameplate details and technical information before ordering.

Request Price and Availability

For the ABB Machine Terminal REM 545, contact ZE MARINE with your required quantity and complete equipment details.

Manufacturer: ABB
Model: REM 545
Product Type: Machine Protection Terminal
Application: Generator & Motor Protection
Functions: Protection, Control, Measurement & Monitoring
Communication: SPA / LON / MODBUS, depending on configuration
Marine Use: Marine & Offshore Certified
Product Status: Legacy / Not Active Since 2022
Condition: Used / Refurbished, subject to available stock

Contact ZE MARINE for current availability, photographs, price and shipping information.