Name:Major elevator manufacturers of electronic equipment technicians
Tools:雷竞技appFluke MDA - 550 motor driven analyzer
Problem:Oscilloscope for variable speed drive for quick setup and troubleshooting.
The solution:雷竞技appFluke MDA - 550 motor driven analyzer provided on how to use the right setting, the predefined test procedures and step-by-step instructions clear charts, in order to save analysis time and helps to simplify the troubleshooting of the elevator motor drives.
One of the world famous elevator company in western Germany maintains more than 5000 elevator facilities.The elevator is located in the of all kinds enterprise and commercial buildings, including offices, hospitals, schools and high-rise apartment buildings.Staff and residents use the elevator every day.Downtime must be down to a minimum.
The company's maintenance team hired a large number of general-purpose technical personnel to carry out preventive maintenance, and eliminate and repair fault, even after failure to study, to learn how to prevent in the future.In addition to the universal technical personnel, and a team of five people electronic experts, they are responsible for the whole area.They mainly for keeping the elevator running smoothly the increasingly complex control system, load weight of the equipment and troubleshoot a variable speed drives.
The elevator maintenance the suffering and joy
The elevator in the motor drive is also known as variable frequency drives (VFDS), frequency converter or adjustable speed drive (ASD).Their future independent ac power constant voltage conversion is used to control the motor torque and speed variable voltage, very suitable for use in through the driver to move up and down the elevator wire rope or belt system of motor.
The elevator company said a senior electronics technician, he usually useFluke oscillographic table(125 b and 190) to exclude drive failure.But recently雷竞技app, he switched to the new Fluke MDA - 550 motor driven analyzer.The technicians, skilled, has 25 years of experience, including the army's experience in electronics and telecommunications, and have technical college degree.
He said, the new motor drive analyzer for skilled or less skilled technologists are great.
"It is suitable for everyone, because it can provide guidance.User interface will guide you to complete the measurement process.The elevator electronics technician said.
Easy troubleshooting
MDA combining hand-held oscillograph and multimeter, and increased the easy to read charts and test it step by step guide.
"The benefits of the MDA is that for highly skilled technical personnel, is here to show you how to set the tool.This saves the time of each test, "he said," lower level of technical personnel, can be set before they start testing to confirm, and gradually complete the test."
MDA with all key test process, including:
- Drive input
- Dc bus - ripple
- Driver output
- The motor input
- The motor shaft voltage
"MDA has all these features, it is a great upgrade.For me, it simplifies the my job.Oscilloscope can complete all of the measurement, can be done with it, and easier to use.You just need to choose test types, corresponding Settings will be ready."
雷竞技appFluke motor drive analyzer to guide you through these tests, and automate many necessary calculations, enabling you to have confidence in the results.In addition, you can in almost any test case data saved in the report, so that you can upload documents to computerized maintenance management system (CMMS) or share with colleagues or consultants.
"When using oscilloscope, I can use manually to test, but MDA test has been set up, you can use directly.If one day you are going to have a lot of measurements, this will save a lot of time."
Identify suspicious place and solve problems
In a recent service over the phone, the electronics technician for the large elevator fault diagnosis of a hospital."Because of the running for 14 years, shows the load ripple motor drives.They are ripple dc link.We think it may be associated with the aging of capacitor.As the growth of the use of time, they will become more and more "dry".
"This is a problem - due to the current capacitor needs more and more, so the elevator also need to be more and more current.Is the result of a capacitor is becoming more and more weak, caused the energy waste.
Using MDA, I test and dc to dc bus ripple test, and can quickly complete the test, to confirm our doubt problem."He said.
They eventually replaced the capacitor Banks to solve the problem.
"When using oscilloscope, I can use manually to test, but MDA test has been set up, you can use directly.If one day you are going to have a lot of measurements, this will save a lot of time."
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