In 2025, with the explosive growth of market demand, the number of orders in March surged year-on-year, hitting a record high. In order to ensure the timely delivery of customer orders, the manufacturing department quickly launched the "delivery defense war", held several on-site mobilization meetings, and took lean management as the starting point to carry out a comprehensive "diagnosis" of the production process. By adjusting the process connection of each team, optimizing the personnel allocation, increasing the spare line body and other measures, we can break through the production bottleneck and continuously improve the production efficiency.

The final assembly workshop of the manufacturing department, as the last gateway before the product leaves the factory, bears the brunt of the delivery responsibility. From the beginning of the month, all the staff in the workshop opened the "white + black" combat mode, and the employees were on duty in separate shifts, racing against time to complete the assembly, debugging, quality inspection, packaging and other processes to ensure that the daily delivery target "does not stay overnight".

In the heavy work, the face of difficulties has not flinched, in the final assembly workshop, a batch of cargo equipment to be shipped due to abnormal testing process urgent need to solve. In the face of difficult problems, we are not in trouble, under the coordination of the field team leader, we cooperate with technical personnel to gradually investigate the risk of replacing abnormal devices, and finally they find the root cause, solve the quality hidden dangers, and complete the delivery task with quality and quantity on time, "the problem does not stay overnight, the delivery is not delayed" belief, in this problem investigation, The concept of "customer first" is engraved in every detail.

An SVG special model emergency plug order needs to be delivered the next day, after receiving the task, the station of the secondary wiring group instantly turned into a brightly lit battlefield, grinding tools and optical fiber offline machine ensemble to break the silence of the night, in front of the delivery of military orders they have already forgotten their fatigue, wholeheartedly into the work of ensuring delivery, and finally completed the task with everyone's joint efforts.

In the board workshop, in the face of the superimposed delivery of high-pressure products, energy storage products and low-voltage products, the backbone of the workshop starts from improving the equipment utilization rate, and by optimizing the equipment operation procedure, the unit board hourly production capacity is increased by 15% and the line change time is reduced by 20%. In the unit workshop, the team through the refinement of product production process, reduce process waste, unit Nissan constantly refresh the historical record, this does not depend on, face the difficulties of the striver attitude, not only to ensure the punctual delivery of customer orders, but also highlights the sentence "not in my hands delay, not in my hands wrong" of the core strength!

All staff charge, condense the "centripetal force". ‌ In this delivery battle, the manufacturing department twisted up and down into a rope, Party members and cadres led the charge, and backbone employees took the initiative to undertake urgent tasks. Employees say, "It's hard, but seeing trucks full of products delivered to customers on time makes it all worth it!" Carrying the sun and moon for thousands of miles, stepping down the mountains and rivers can be smooth, this spirit of not afraid of difficulties, hard work, perseverance, is the inheritance of the older generation of FGI pioneers.

Find the P(+) end and N(-) end of the DC power supply inside the frequency inverter, adjust the multimeter to the diode black watch pen on the inverter P(+), and the red watch pen measures R, S, and T three phases respectively with the same and basic balance, indicating that the frequency conversion is good, such as the measured values are not the same, indicating that the frequency invertermodule is damaged.

Find the P(+) end and N(-) end of the DC power supply inside the frequency inverter, adjust the multimeter to the diode red pen on the frequency inverter N(-), and the black pen measures the U, V, and W three-phase numbers in turn and basically balance, indicating that the frequency conversion is good, such as the measured values are not the same, indicating that the frequency converter module is damaged.

Note

Remove the frequency inverter R, S, T terminal U, V, W terminal automatic resistance when detecting the inverter module.

The same method can be used to measure the quality of various inverter.

If the inverter reports overvoltage and undervoltage, check whether the inverter module is damaged and measure the inverter with the above method.

Sometimes the jump switch may be damaged frequency converter module, do not hurry to power on, use the above method to measure the frequency converter is good or bad.

Dc bus voltage measurement

The purpose of measurement: when the frequency inverter reports the lack of phase, undervoltage, the measurement of the input voltage is no problem, measure this voltage, to determine which circuit is the problem inside the inverter.

Inventory: dc voltmeter, choose 1000 v dc block.

Measurement methods: red pens and dc bus point P (with corresponding terminals), black pens and pick N points, read voltage measurement. According to the principle of rectification, the inverter should be measured under load. Only when measured under load can you see if the voltage is low. The voltage under load is lower than 470V, the filter capacitance is reduced to less than 400V, and the phase is missing.

Recently, FGI Technology Center held the "My FGI Story" symposium in Jinan and Wenshang simultaneously, inviting senior employees to tell the story of the frequency inverter in the development process of the enterprise with personal experience, and new employees of the technology center participated through online and offline linkage, and shared the profound meaning of the "FGI spirit".

FGI started from the state-owned wireless power plant in Wenshang County in 1970, FGI people have written a legend in the field of power electronic frequency inverter energy saving control with 54 years. The story of every old employee is a concrete expression of the spirit of enterprise, and I hope that the younger generation will inherit this persistence and innovation.

For the low temperature weather in the northeast, it is suitable for the environment of about minus 40 ° C, and you can choose to use the low temperature frequency inverter. Low temperature frequency inverter is a frequency converter specially designed for normal operation in low temperature environment.

On March 24, 2025, FGI Company held a launch meeting of Lean Safety Management phase I, attended by company leaders, Jiang Ying, General manager of Superior Consulting, project members and key personnel of the company.