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Electrical equipment such as PLC servo drive inverter during use may occur some damage or unexpected problems, so that these problems can be quickly fixed, requiring a team of electrical maintenance staff. Must have basic knowledge and professional experience to quickly handle errors to help machines work again, today we will introduce some basic faults of PLC servo drives for customers to see. reference.
Some signs such as powering the inverter input but the inverter is not powered on, the screen is not lit. You should use a power meter (VOM) to measure the input voltage, if you determine that there is still a source and the inverter still does not light up the screen, the inverter may be damaged, to carefully check this error. Should measure some components such as fuses, capacitors, resistors and diode fuses. If the inverter powers on but reports an error, you must check if the error is related to hardware or software.
Some common errors such as overload, over current, over voltage. For these errors, the inverter screen will display some symbols, look up the symbols in the manual to see what error message the inverter shows? Often in the manufacturer's documentation will also guide you on how to fix these errors.
As for the servo driver, the error states are similar to the inverter, but because it is a precise control device, the servo driver may also suffer from other errors such as incorrect control, unable to read the encoder feedback from the engine. The servo driver has a very complex structure, so it is necessary to have an expert on this device to check and repair it quickly. For drivers you should use a cable connected to the computer to save the settings on the computer as well as track the driver error history.
As for the motor, when the encoder error is reported, if you do not have experience, you should not remove the inspection because if inserted incorrectly, the encoder disc will be damaged immediately, causing more difficulties in repairing.
Old PLCs often suffer from inter-source, input, output errors, communication loss. For power failure, it is imperative to have an expert check it, for the output fault is the relay, it is easy to replace another relay as long as the foot type and size are appropriate. In addition, for communication errors, you should not interfere with the program, check the wires, the devices are connected to the communication line. In addition, when testing the plc related to communication, you absolutely must not interfere with the parameters of these devices because the wrong address can not connect to the communication.
Above, I have introduced some common errors of inverters, servo drivers, plc. If you need support and quotation, please contact the information below of the website.