EMERSON A6500-UM

1. Overview

The A6500‑UM is the core module of the Emerson AMS 6500 ATG Machinery Protection System. It provides universal measurement and monitoring functions, supports the connection of multiple sensors, and enables real-time collection of key parameters such as shaft relative vibration, rotational speed, key phasor, and displacement.

Adopting a dual-channel design, it supports independent or combined measurement modes, and is widely used in fields such as industrial processes, power equipment, and mechanical manufacturing.

2. Parameters (Main Technical Specifications)

Item	Specification
Sensor Input Channels	2 (independent or combined operation available)
Digital Inputs	5
Digital Outputs	6
Operating Temperature	-20 °C ~ 70 °C
Storage Temperature	-40 °C ~ 85 °C
Relative Humidity	5 % – 95 % (non-condensing)
Weight	Approximately 200 g
Power Consumption	24 mW
Shock Resistance	150 m/s² (4,000 cycles per axis)
Vibration Range	0.15 mm (10‑55 Hz) / 20 m/s² (55‑150 Hz)
Dimensions	3U single-slot plug-in type (saves approximately 50% space compared to traditional 4U cards)

3. Product Features

• Complies with the API 670 standard and is equipped with complete machinery protection functions.
• Integrates predictive technology (PeakVue) and an adjustable band-pass filter to improve the accuracy of fault early warning.
• Multi-protocol communication: Supports OPC UA, Modbus TCP/IP, and Modbus RTU, facilitating integration with upper-level systems.
• Strong sensor compatibility: Can be directly connected to common sensors such as eddy current, piezoelectric, LVDT, Hall, and low-frequency bearing vibration sensors.
• Dual channels work independently, and each channel can separately measure parameters such as shaft displacement, shaft eccentricity, or rotational speed.
• Compact 3U design saves cabinet space and is compatible with 19-inch standard racks.

4. Structure and Composition

• Front Panel: Two groups of green (OK) and red (Alarm) indicator lights for displaying operating status.
• Sensor Interfaces: Two analog signal input ports marked 1 and 2, supporting the connection of multiple sensors.
• Digital I/O Area: 5 digital input terminals and 6 digital output terminals.
• Internal Bus: Transmits measurement data to the A6500‑CC communication card via the RS‑485 bus to achieve system-level data aggregation.
• Power Supply and Processing Unit: Powered by an internal power module, with an embedded DSP responsible for signal collection, filtering, and diagnostic calculations.

5. Application Fields

• Industrial Process Monitoring: Monitoring of key parameters in continuous production processes such as chemical engineering, petroleum, and iron and steel industries.
• Power Systems: Monitoring of the operating status of transformers, generators, and power distribution cabinets.
• Mechanical Manufacturing: Monitoring of shaft vibration and displacement of machine tools and CNC centers.
• Automated Production Lines: Real-time status detection of sensors and actuators.
• Rotating Equipment Protection: Monitoring of shaft relative vibration, rotational speed, and key phasor of steam turbines, gas turbines, compressors, and water turbines.

6. Installation and Maintenance

• Installation: Adopts the 19-inch rack standard, with a single-slot 3U specification for the card slot. Sensor signals need to be connected through corresponding converters (e.g., A6500‑LC). Ensure that the temperature and humidity of the working environment are within the specified range.
• Wiring: Connect sensors, digital I/O, and corresponding ports of the card in accordance with the marks in the manual. Use shielded wires to reduce electromagnetic interference.
• Commissioning: Set the measurement mode, threshold, and alarm logic through the configuration software provided by Emerson. Measurement data can be viewed in real time on the OPC UA/Modbus client.
• Maintenance: Regularly check the connection terminals and remove dust. Perform anti-corrosion and moisture-proof treatments according to the operating environment. It is recommended to conduct calibration and firmware updates every 12 months to maintain measurement accuracy and function compatibility.
• Fault Diagnosis: The status of the indicator lights (OK/Alarm) provides quick fault indication. Detailed diagnostic information can be queried in the upper-level system via the RS‑485 bus.

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