Description
Product Overview
The ABB REM543CM216AAAA REV.B is an ABB REM 543 series Machine Terminal designed for protection, measurement, control, and monitoring applications on rotating electrical machines.
The REM 54 series combines measurement functions with protection and control capabilities in a dedicated machine terminal. ABB documentation identifies the REM543C_216 configuration as one of the supported REM 543 hardware configurations.
The unit is intended for applications such as motors and generators where electrical quantities, protection functions, control signals, and machine status need to be handled within one protection and automation device.
Key Features
- Manufacturer: ABB
- Model: REM543CM216AAAA
- Revision: REV.B
- Product Type: Machine Terminal
- Series: REM 543
- Application: Rotating machine protection and control
- Supports electrical measurement and protection functions
- Transformer-input configuration
- Integrated machine monitoring and control functions
- Rear terminal connections for external circuits
- RS-232 and RS-485 interfaces are provided within the REM 54 architecture
- Suitable for motor, generator, and industrial power-system applications
- Exact configuration should be verified from the complete order code
Technical Datasheet
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model / Order Code | REM543CM216AAAA |
| Revision | REV.B |
| Product Series | REM 543 |
| Product Type | Machine Terminal |
| Main Application | Rotating machine protection, measurement & control |
| Hardware Configuration | REM543C_216 |
| Input Configuration | Matching-transformer configuration |
| Sensor Inputs | Not included in the AAAA configuration |
| Communication Interfaces | RS-232 / RS-485 available in REM 54 architecture |
| Installation | Panel / equipment-specific |
| Listing Condition | New – Open Box |
ABB’s technical manual explains that REM 54 order numbers identify the hardware and software configuration. It also distinguishes AAAA configurations from versions with sensor inputs; the AAAA configuration is associated with conventional matching transformers rather than the sensor-input option.
Measurement & Protection
The REM 543 receives electrical measurement signals through its configured matching transformers. ABB documentation describes configurations using current and voltage transformer inputs, with the exact number of CT/VT channels depending on the selected hardware configuration.
These measurement channels provide the electrical information required by the machine terminal’s protection and monitoring functions.
Typical functions in the REM 54 platform include monitoring of:
- Phase currents
- Phase voltages
- Frequency-related quantities
- Active and reactive power
- Machine operating conditions
- Protection-related electrical quantities
- Alarm and trip states
The exact protection function set depends on the installed software and configuration, so individual protection elements should be confirmed from the unit’s software/configuration documentation rather than assumed from the model number alone.
I/O & Communication
The REM 54 architecture uses rear-panel terminal blocks for external connections. ABB documentation identifies connections for transformer inputs, I/O and power-supply modules, sensor interfaces where applicable, and communication interfaces.
The documented REM 543 terminal arrangement includes:
- Transformer input connections
- I/O connections
- Power-supply connections
- RS-232 interface
- RS-485 interface
- External display connection
- Additional module connections depending on configuration
This modular arrangement allows the REM 543 to function as part of a larger machine protection and automation system.
Typical Applications
The REM543CM216AAAA is suitable for legacy ABB machine protection and automation systems, particularly applications involving rotating electrical equipment.
Typical applications include:
- Motor protection
- Generator protection
- Motor control and monitoring
- Generator monitoring
- Industrial power-system protection
- Electrical measurement
- Alarm and trip management
- Machine automation
- Retrofit and replacement projects
- Spare-parts inventory for ABB REM 54 systems
The REM 54 documentation describes the platform specifically as a machine terminal for protection, measuring, and control functions.
Installation & Configuration
Before replacing an existing REM 543, compare the complete order code rather than only the REM543 series designation.
Check:
- Complete order code: REM543CM216AAAA.
- Revision marking: REV.B.
- Hardware configuration.
- Software/version information.
- Power-supply configuration.
- Current and voltage transformer connections.
- I/O module configuration.
- Communication wiring.
- Existing protection settings and application configuration.
The ABB manual states that the REM 54 order number identifies the machine-terminal type together with its hardware and software configuration.
Before wiring, isolate the associated electrical equipment according to the site’s approved protection and maintenance procedure. CT circuits require particular attention because incorrect handling can create hazardous conditions.
After installation, verify the wiring and configuration before placing the machine terminal back into service.
Maintenance & Inspection
For an open-box or previously stored REM 543, inspect:
- Front-panel display and controls
- Housing and mounting points
- Terminal blocks
- Connector condition
- PCB area for contamination
- Signs of corrosion or moisture
- Identification labels
- Revision markings
- Power-supply section
- Communication ports
The current referenced eBay listing is New – Open Box, so it should not automatically be described as factory-new or recently tested.
For an installed unit, protection-function testing should be performed according to the applicable ABB commissioning or maintenance procedure. A visual inspection alone does not confirm correct protection operation.
Replacement & Compatibility Notes
The complete order code is important:
REM543CM216AAAA
Do not substitute another REM 543 model simply because the front panel looks similar. ABB produced multiple REM 543 hardware configurations with different transformer, sensor, power-supply, I/O, and display arrangements.
In particular, the fourth-character configuration information can distinguish conventional matching-transformer versions from units equipped with sensor inputs. The AAAA configuration belongs to the matching-transformer arrangement.
Before ordering a replacement, compare:
- Complete order number
- Revision
- Hardware configuration
- Software version
- Power-supply module
- CT/VT input arrangement
- I/O modules
- Communication configuration
- Existing protection settings
Identification
Manufacturer: ABB
Series: REM 543
Model / Order Code: REM543CM216AAAA
Revision: REV.B
Product: Machine Terminal
Application: Rotating machine protection, measurement and control
The exact eBay listing identifies the product as ABB REM543CM216AAAA REV.B Machine Terminal and lists the condition as New – Open Box.
Recommended eBay SEO Title
ABB REM543CM216AAAA REV.B REM 543 Machine Terminal Motor Generator Protection
Short Chinese Title
ABB REM543CM216AAAA | REM543机端保护终端
