EMERSON A6500-UM Universal Measurement Card

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EMERSON A6500-UM

Emerson Electric Co. A6500-UM is a Universal Measurement Card used in the AMS 6500 ATG Machinery Protection System. It is designed for online condition monitoring and protection of critical rotating equipment, providing measurement functions for vibration, position, speed, and other machine health parameters.

Product Description

The Emerson A6500-UM is a 2-channel universal monitoring module that supports a wide range of industrial sensors, including eddy-current displacement probes, piezoelectric accelerometers, velocity sensors, seismic sensors, Hall-effect sensors, LVDT sensors (with A6500-LC converter), and dynamic pressure sensors.

It is installed in the AMS 6500 ATG system rack and communicates measurement data through the internal RS-485 bus to the A6500-CC communication card for integration with higher-level monitoring systems via Modbus RTU, Modbus TCP/IP, and related interfaces.

Technical Specifications

Parameter	Description
Manufacturer	Emerson
Model	A6500-UM
Product Type	Universal Measurement Card
System	AMS 6500 ATG Machinery Protection System
Channel Number	2 sensor input channels
Module Size	3U, 1-slot plug-in module
Sensor Compatibility	Eddy-current, piezoelectric, seismic, Hall-effect, LVDT, pressure sensors
Digital Inputs	5
Digital Outputs	6
Communication	Internal RS-485 bus to A6500-CC
Protocol Support	Modbus RTU / Modbus TCP/IP
Analog Output	0/4–20 mA isolated outputs
Operating Temperature	-20°C to +70°C
Compliance	API 670 compliant

Main Functions

1. Shaft Vibration Monitoring

• Relative shaft displacement measurement
• Peak, peak-to-peak, RMS and Smax measurement
• Supports turbine and rotating machinery protection applications

2. Case Vibration Monitoring

Supports:

• Displacement measurement
• Velocity measurement
• Acceleration measurement

3. Position Monitoring

Used for:

• Axial position
• Rod position
• Rod drop
• Eccentricity measurement

4. Speed & Keyphasor Monitoring

Provides rotational speed and phase reference monitoring for rotating machinery.

Applications

The A6500-UM is widely used in industries requiring continuous machinery protection and predictive maintenance, including:

• Power generation plants
• Steam turbines
• Gas turbines
• Compressors
• Pumps
• Large motors
• Petrochemical equipment
• Oil & gas rotating machinery

It is especially suitable for critical rotating assets where vibration monitoring and automatic protection are required.

Key Advantages

• Universal sensor compatibility
• Two-channel high-performance monitoring
• Compact 3U design reduces cabinet space
• Hot-swappable module design
• API 670 compliant protection capability
• Built-in self-diagnostics for hardware, sensors, cables, and power supply
• Flexible integration with plant monitoring systems

Conclusion

The Emerson A6500-UM Universal Measurement Card is a core monitoring module of the AMS 6500 ATG Machinery Protection System, providing accurate vibration, position, speed, and condition monitoring for high-value rotating equipment. Its flexible sensor support, compact design, and API 670 compliance make it a reliable solution for turbine and machinery protection applications.