Emerson A6500-UM Mechanical Protection System Universal Measurement Card

Channel configuration: Equipped with 2 sensor input channels, which can be selected for independent or combined use according to the measurement mode. It supports a variety of sensors such as eddy current, piezoelectric (accelerometer or speedometer), seismic (electrodynamic), LF (low-frequency bearing vibration), Hall effect and LVDT (used in combination with A6500-LC). In addition, it also includes 5 digital inputs and 6 digital outputs, which can meet various monitoring and control requirements.

Signal transmission and output: The measurement signal is transmitted to the A6500-CC Com card through the internal RS 485 bus and can be converted into Modbus RTU and Modbus TCP/IP protocols, facilitating transmission to the host or analysis system. Meanwhile, the measurement results can be obtained through 0/4-20mA analog output. These outputs have a common ground and are electrically isolated from the system power supply, which can effectively reduce interference.

Functional features: It can measure absolute vibration of the shaft, relative vibration of the shaft, shaft eccentricity, and piezoelectric vibration of the housing. It can also monitor parameters such as thrust and rod position, differential and housing expansion, and valve position. Meanwhile, it supports speed and key signal input.

Size and standard: It adopts a dual-channel, 3U size, 1-slot plug-in module design. Compared with the traditional four-channel 6U card, it can reduce the cabinet space requirement by half. It complies with the API 670 standard. The module supports hot plugging, facilitating maintenance and replacement during the system operation process.

Self-check function: It has a complete self-check capability, which can monitor hardware, power input, hardware temperature, sensors and cables in real time, etc. It can promptly detect its own faults and ensure the stable operation of the system.

Remote control: Supports remote selection of limit doubling and tripping bypass. Operators can make relevant Settings and controls for the card remotely, enhancing the convenience and flexibility of operation.

Technical parameters: The voltage range of the eddy current input signal and the original signal is -1V to -22V, the frequency range is 0 to 18750Hz, and the attenuation is less than 0.1db. The power supply voltage is -23.25V /-26.0V DC selectable. It has short-circuit protection, the maximum power supply load is 35mA, and the power supply accuracy is ±1%. The operating temperature range is from -20 °C to + 70°C. The ADC resolution is 24 bits.

Application scenarios:

Power industry: It can be used for monitoring steam turbines and gas turbines, measuring parameters such as shaft vibration and shaft displacement in real time, ensuring the stability of the shaft system during the operation of the turbine, avoiding shutdown accidents caused by shaft system failures, and guaranteeing the stable supply of power. It can also be applied to boiler feed water pumps to monitor their operating status, promptly detect abnormal vibration of the pump body or changes in shaft displacement, prevent pump failures from affecting the normal water supply of the boiler and subsequently the entire power generation system.

Chemical industry: It is often used for monitoring compressors in the chemical industry. By connecting eddy current, piezoelectric and other sensors, it monitors the vibration, eccentricity and other conditions of the compressor, ensuring the stable operation of the compressor, preventing the interruption of the chemical production process due to compressor failure, and avoiding safety risks and economic losses. In addition, it can also be used for equipment such as turbine exhaust machines and blowers to monitor the operation status of the equipment in real time, providing a basis for the maintenance and upkeep of the equipment and ensuring the continuity and safety of the chemical production process.

Petroleum industry: In the process of petroleum production, it can be applied to various rotating mechanical equipment, such as oil pumping units, oil transfer pumps, etc. By measuring parameters such as the vibration and position of these devices, problems during their operation can be detected in a timely manner, reducing the downtime due to equipment failures and ensuring the smooth progress of the oil extraction and transportation process.

Steel and metallurgy industry: It can be used for vibration monitoring of equipment such as fans, water pumps, coal mills, and gearboxes. For instance, during the operation of a coal mill, monitor the vibration of its shaft and bearings to promptly detect abnormal vibrations caused by wear, imbalance and other reasons, thereby preventing equipment damage and affecting the steel production process.

Aerospace industry: It is applicable to the monitoring of key rotating components such as aero engines. By precisely measuring parameters such as vibration and displacement, it helps technicians promptly understand the operating status of the engine, ensuring the reliability and safety of the aero engine and providing a guarantee for the smooth implementation of aerospace missions.