3BHB003688R0101

Product Details

Product Description

brand	model	QQ email	Personal official website
ABB	3BHB003688R0101	2797820256@qq.com	/
weight	Specifications	Telephone
10kg	15cm	+86 18030177759

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Bently 3500 vibration monitoring of the unit, state monitoring and measuring point configuration requirements
Keyphasor: each shaft system with the same speed of the compressor unit is equipped with a Keyphasor measuring point; Bentley 3300xl series eddy current sensor is used for measurement.
Shaft vibration: each sliding support bearing is equipped with a pair of shaft vibration measuring points in the X / Y direction (perpendicular to each other), and Bentley 3300xl series eddy current sensors are used for measurement.
Axial displacement: each thrust bearing of the compressor unit is equipped with double redundant axial displacement measuring points; Bentley 3300xl series eddy current sensor is used for measurement.
Pad vibration: each rolling support bearing is equipped with two pad vibration measuring points (installed in horizontal and vertical directions), and Bently 330500 series velomitor piezoelectric vibration speed sensor is used for measurement.
Bearing temperature (if applicable
Sensor output mechanical angle θ The signal enters the CTR main control board from the system interface XIO board, and is converted into θ r. Then at the rotor angular velocity ω R form, directly feed back the speed to the speed regulator.
Torque given (T)_ R will come from SFC of speed regulator_ T_ R performs torque limit processing and di / dt calculation to obtain the final torque reference IQ_ R signal. ID_ R is the magnetic flux given signal, which has the following functions: keep the magnetic flux constant below the base speed, and adjust the speed of the motor with constant torque; Above the base speed, keep the voltage constant, reduce the magnetic flux in a certain proportion, and adjust the speed with constant power.After inputting the pulse command, it occurs during high-speed operation: the pulse frequency output by the controller is too high, and the correction program adjusts the frequency of the pulse output; The electronic gear ratio is set too large; The servo gain setting is too large. Adjust the servo gain manually or actively from the beginning
5. ABB Robot Servo motor repairs several faults without overload with load. How to deal with them?
If the servo run signal is connected and no pulse is sent, it will occur:
Check the servo motor power cable wiring to see if there is poor contact or cable damage; If it is a servo motor with a brake, the brake must be turned off; Whether the speed loop gain is set too large; Whether the integration time constant of the speed loop is set too small.
If the servo only occurs during operation:
Whether the azimuth loop gain is set too large; Whether the positioning completion amplitude is set too small; Check whether the servo motor shaft is locked and adjust the machine from the beginning.
6. How to deal with abnormal sound or vibration when ABB Robot Servo motor repairs several faults?
Servo wiring:
Check whether the power cable, encoder cable, control cable and cable are damaged; Check whether there is interference source near the control line and whether it is parallel to or too close to the nearby high current power cable; Check whether there is any sudden change in the potential of the grounding terminal to ensure excellent grounding.
Servo parameters:
The servo gain setting is too large, and it is suggested to manually or actively adjust the servo parameters from the beginning; Acknowledge the setting of the time constant of the speed response filter. The initial value is 0, and the set value can be tested to increase; The electronic gear ratio setting is too large, and it is suggested to restore to the factory setting; Resonance of servo system and mechanical system, test and adjust the frequency and amplitude of notch filter.
Mechanical system:
The coupling connecting the motor shaft and the equipment system is offset, and the mounting screws are not tightened; Poor engagement of pulley or gear will also lead to load torque change. Test the no-load operation. If the no-load operation is normal, check whether the joint part of the mechanical system is abnormal; Confirm whether the load inertia, torque and speed are too large, and test the no-load operation. If the no-load operation is normal, reduce the load or replace the driver and motor with larger capacity. Application of Bently 3500 in steel, electric power, chemical and petrochemical industries and measuring points for vibration monitoring
The compressor belongs to the general equipment category and is preferably used in iron and steel, electric power, metallurgy, chemical industry, petrochemical and other enterprises. The following is a configuration example of the Bentley vibration protection system used by the compressor unit driven by the motor through the gearbox for your reference.
Compressor unit: motor, gearbox, compressor
Typical vibration measuring points of Bently 3500 are arranged as follows:
The front and rear bearing housings of the motor are equipped with shell vibration sensors to measure the j-pair vibration of the motor bearings. The low-speed end and Gao speed end of the gearbox are respectively equipped with shell vibration sensors to measure the j-pair vibration of the gearbox. The X-Y direction eddy current sensor system at the front and rear of the compressor is used to monitor the shaft vibration. In addition, a set of eddy current sensor system is used to measure the displacement of the compressor shaft, and a set of eddy current sensor system is used to measure and monitor the Keyphasor. The system configuration of vibration monitoring products is as follows:
Centrifugal compressor – driven by steam turbine
For units working in hazardous areas, Bentley sensors and monitoring system shall be provided with multi agency approval unit option. However, there is no requirement for the unit working in the safe area.
1. Measurement point configuration requirements
Keyphasor: each shaft system with the same speed of the compressor unit is equipped with a Keyphasor measuring point; Bentley 3300xl series eddy current sensor is used for measurement.
Shaft vibration: each sliding support bearing is equipped with a pair of shaft vibration measuring points in the X / Y direction (perpendicular to each other), and Bentley 3300xl series eddy current sensors are used for measurement.
Axial displacement: each thrust bearing of the compressor unit is equipped with double redundant axial displacement measuring points; Bentley 3300xl series eddy current sensor is used for measurement.
Pad vibration (optional)

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