Technical Instructions
During operation, servo hydraulic systems may experience various types of faults, making hydraulic system fault diagnosis a complex technical task. Accurate troubleshooting helps reduce downtime, optimize maintenance costs, and ensure stable equipment performance. Below is a commonly applied procedure for diagnosing and handling electrical faults in servo hydraulic systems. 1. On-site inspection and information collection […]
During the operation of the motor, the operating current exceeds the rated value, which is called overload. Overload is reflected in the fact that although the current exceeds the rated value, the extent of the excess is not large and generally does not form a large inrush current. 3 causes of inverter overload The mechanical […]
In actual work, the current of the machine and equipment is normal when it starts running. After a period of time, the current becomes larger. After a long time, the frequency converter will be reported as overloaded. First make sure the inverter is selected correctly, and then confirm whether the parameters in the inverter have […]
Motor tripping means that when the motor or line fails, the current suddenly changes, causing the protective switch to automatically disconnect. Observe whether there are any abnormalities in the motor and what are its main symptoms 1. When the stator coil winding is short-circuited, you may see smoke coming from the motor. 2. When the […]
In the actual production process, why do motors driven by frequency converters overheat? This is because the voltage driven by the inverter contains rich high-frequency components. The voltage waveform of the inverter-driven motor is not a sine wave voltage, but a pulse width modulation (PWM) voltage. According to Fourier analysis, this waveform contains rich high-frequency […]
During the use of the frequency converter, if it is found that the frequency converter is subject to signal interference, it is necessary to first determine the source of the interference signal, and take appropriate methods to block the signal interference based on the actual situation. Certain methods can also be adopted to prevent the […]
1. What is inertia? Inertia: the amount of inertia of the movement of a substance (object). Moment of inertia: A measure of the inertia of a rigid body when it rotates around an axis (the characteristic that a rotating object maintains its uniform circular motion or is at rest). 2. Low inertia and high inertia […]
Generally, servo motors have three control methods: speed control, torque control, and position control. The speed control and torque control of the servo motor are controlled by analog quantities, and the position control is controlled by sending pulses. The specific control method used in actual industrial production depends on the requirements of the customer’s machine equipment […]
During industrial production, mechanical equipment is often affected by various environmental and operating conditions. As a result, servo motors can encounter several common issues. Below, Song Nguyen shares some frequently observed servo motor faults along with their causes and corrective actions. 6 Common Servo Motor Issues Abnormal Motion This issue typically occurs during feeding or […]
What Is an HVAC System? HVAC stands for Heating, Ventilating, and Air Conditioning, commonly referred to as air conditioning and ventilation systems. An HVAC control system regulates temperature, humidity, and air quality within indoor spaces or vehicles. Providing acceptable indoor air quality and thermal comfort is the fundamental requirement of an HVAC system. The system […]
Converting the Nidec C200 3-Phase 380V Inverter into a 3-Phase 220V Inverter The discovery that the Nidec C200 3-phase 380V inverter can control 3-phase 220V motors and operate with 220V input voltage is an interesting finding that came from a real customer request. In the Vietnamese market, very few inverter suppliers have 3-phase 220V inverters […]
Heavy load start and deceleration – High inertia In applications with heavy loads and high inertia, such as long conveyors, crushers, or fully loaded extruders during startup, as well as centrifuges and compressors, a large starting torque is often required. This can easily cause the inverter to trigger overcurrent faults and usually necessitates extending the […]
Does the overcurrent error occur after replacing the servo bearing, and does the installation of the encoder have any impact? Let’s answer this question together with Song Nguyen: When replacing bearings or removing the rotor, it is necessary to perform auto-tuning to recalibrate the motor parameters when reassembling. Replacing the bearing itself will not cause […]