Panasonic servo drive repair

Panasonic drive
Panasonic servo drive is a controller used to control Panasonic servo motors. Its function is similar to that of a frequency converter on ordinary AC motors. Currently, mainstream Panasonic servo drives use digital signal processors (DSPs) as the control core, which can implement relatively complex control algorithms and make things digital, networked and intelligent. Power devices generally use drive circuits designed with intelligent power modules as the core. The drive circuit is integrated inside and has fault detection and protection circuits such as overvoltage, overcurrent, overheating, and undervoltage. A soft-start circuit is also added to the main circuit to reduce The impact of the small boot process on the drive. The power drive unit first rectifies the input three-phase power or mains power through a three-phase full-bridge rectifier circuit to obtain the corresponding direct current. The rectified three-phase power or mains power is then driven by a three-phase sinusoidal voltage inverter to drive a three-phase permanent magnet synchronous AC servo motor. The entire process of the power drive unit can simply be said to be the process. The main topological circuit of the rectifier unit (
) is a three-phase full-bridge uncontrolled rectifier circuit.
Several driving modes of Panasonic servo drives:
Panasonic servo drives can generally adopt three control modes: position, speed and torque. They are mainly used in high-precision positioning systems and are currently the high-end of transmission technology.
The control objects of Panasonic servo drives are position loop, speed loop and current loop from outside to inside. The corresponding servo drives can work in position control mode, speed control mode and torque control mode.
When the Panasonic servo driver works in the torque control mode, its torque given value can be given in three ways: using analog given and internal given communication given by parameter settings.
When the Panasonic servo driver works in speed control mode, its speed given value can be given in three ways: using analog given, internal given set by parameters 3. Communication given.
When the Panasonic servo driver works in position control mode, its position given value can be given in three ways: pulse input given, internal given communication given by parameter setting.
There are relatively few internal given applications for parameter settings, which are limited step-by-step adjustments.
The advantage of using analog input is fast response, which can be used in many high-precision and high-response situations. The disadvantage is that there is zero drift, which makes debugging difficult. Pulse control is compatible with common signal modes: (forward and reverse pulse), pulse/direction, /B-phase signal. The disadvantage is that the response is slow, and Japanese and domestic products mostly use this method.
The communication is usually provided by bus communication, but also by point-to-point communication and network communication.