Description

Emerson  A6500-UM  ATG 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 (needs to be used in combination with A6500-LC). In addition, it also includes 5 digital inputs and 6 digital outputs.

Signal transmission and conversion: 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 for transmission to the host or analysis system. The measurement results can also be output through 0/4-20 mA analog output, and the output has a common ground and is electrically isolated from the system power supply.
Functional features: It can be used to measure absolute vibration of the shaft, relative vibration of the shaft, piezoelectric vibration of the housing, thrust and rod position, differential and housing expansion, valve position, as well as speed and key signals, etc.

Physical specifications: It is a dual-channel, 3U size, 1-slot plug-in module. Compared with the traditional four-channel 6U card, it can reduce the cabinet space requirement by half.
Other features: Complies with the API 670 standard and supports hot plugging. It has a self-checking function and can monitor hardware, power input, hardware temperature, sensors and cables, etc. The operating temperature range is from -20 °C to + 70° C. The power supply voltage is selectable as -23.25V / -26.0V DC. It has short-circuit protection function and the maximum power supply load is 35 mA.

Specific application:
Vibration monitoring: It can be connected to various sensors such as eddy current and piezoelectric sensors to monitor parameters such as absolute vibration and relative vibration of the shaft of large and medium-sized rotating machinery such as steam turbines, compressors, fans and water pumps. It can promptly detect abnormal vibration caused by imbalance, misalignment, bearing wear and other reasons, so as to take maintenance measures and avoid equipment failure.

Displacement measurement: It can be used in conjunction with sensors such as LVDT to measure physical quantities such as thrust and rod position, differential and shell expansion, and valve position. For instance, in a steam turbine, the axial displacement of the turbine rotor can be monitored to prevent the friction of moving and stationary parts due to excessive displacement and ensure the safe operation of the equipment.
Rotational speed monitoring: By receiving signals output by Hall effect sensors and other sensors, the rotational speed of rotating machinery can be measured. It can be used to determine whether the operating speed of the equipment is normal, and whether there are abnormal situations such as overspeed or low speed. It can also provide a rotational speed reference for other measurements and controls.

Equipment fault diagnosis The measured signal can be converted into Modbus RTU and Modbus TCP/IP protocols and transmitted to the host or analysis system. Combined with relevant analysis software, the collected data can undergo spectrum analysis, waveform analysis, etc., to help technicians accurately determine the type and location of equipment faults, such as bearing faults, gear faults, etc. Provide a basis for equipment maintenance.
System integration and remote monitoring: It can be integrated with distributed control systems such as DeltaV, and data can also be sent to other third-party systems through protocols such as OPC UA. It can also be combined with Emerson’s ATG View mobile application to achieve remote monitoring, facilitating operators to understand the operating status of the equipment anytime and anywhere and improving the efficiency of equipment management.