(1) About the synchronous switching function. Now, in addition to the off-line UPS power supply with an additional output power of less than 500VA, the off-line UPS power supply with square wave output is still selected for conversion control without mains synchronization function, all UPS power supplies with an output power of 1KVA and above should have the mains synchronous switching function when performing the mains power supply to the inverter power supply conversion operation, so as to ensure that the inverter and the bypass power supply have the same phase and frequency output characteristics. Because the perfection of the phase-locked synchronization circuit of each manufacturer's products is appropriately different, users should pay attention to the operating characteristics of its phase-locked synchronization circuit when purchasing UPS power supply.
The phase-locked synchronous control circuit has a strong ability to synchronize the phase-locked synchronization capture of the mains input voltage, which is mainly manifested in the wide range of the mains input voltage change of the UPS power supply, and the mains sine wave can synchronously control the sine wave output by the inverter.
When the UPS power supply is switching, the phase difference between the communication bypass power supply and the inverter power supply is as small as possible. The frequency stability of the power supply grid in the context of the use should be considered. If the mains power is used, the same control circuit of the general on-line UPS power supply can meet the requirements. For small power grids with large frequency fluctuations, in order to successfully complete the synchronous switching operation, it is necessary to choose a UPS power supply with corresponding functions.
(2) Ability to resist the impact of capacitive loads. For rectifier filter loads, because there are large capacitance filter capacitors connected to the rear of the rectifier, it requires that the peak current supplied by the UPS power supply is much greater than the peak current required to drive the resistive load. The target for measuring the size of a capacitive load is the peak factor. It is defined as the ratio of the maximum capacitive peak current with the same sine wave communication power supply with a rectified filtered load to the maximum peak current with a pure resistive load. The condition for the above comparison is that the capacitive load and the resistive load have the same impedance value.
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Delta's inverter product recommendation
Delta was established in 1971 to provide power supply and heat dissipation treatment programs for the world. Over the past 20 years, Delta's development in Chinese mainland has become increasingly deep-rooted, and its business operations cover development, production, sales and service. With innovative skills, we will continue to strengthen engineering research and development equipment and sophisticated testing ...
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Correct use of Delta inverter in operation
(1) When the speed of the motor is controlled by the Delta inverter, the noise and temperature rise of the motor are higher than that of the frequency of the motor. When the motor is running at low speed, because the speed of the motor blades is low, the temperature rise of the motor becomes high.
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The inverter has a function – a Delta inverter
1. Soft start is energy-saving
The hard start of the motor will cause a serious impact on the power grid, and it will also require too high the capacity of the power grid, and the large current generated when the motor is started and the sensation will cause great damage to the baffle and valve, and the service life of the equipment and pipeline will be extremely unlucky. And the use of inverter energy-saving devices ...
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Regular diagnosis and repair method of Delta servo motor
1. Common faults of motor heating up too high or smoke motor
Causes: 1. Excessive load; 2. Two-phase operation; 3. Blocked air duct; 4. The working temperature is too high; 5. Interphase or inter-turn short circuit fault of motor stator winding; 6. Motor stator winding grounding device; 7. The power supply voltage is too high or too low;
Overhaul...
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Analysis and correction of the cause of Delta servo drive alarm
Analyze and correct the cause of Delta servo drive alarms.
Control current and undervoltage protection.
Alert Number: 11.
Reason: The voltage at the end of the dynamic DC bus is lower than the specified value. Due to the instantaneous shortage of power supply capacity, the control voltage is too low.
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Delta's servo protection parameters are written
A3, B3 servo
P5-97 Motion Control Mobilization Commands
0x0003 Maintenance Activation (Successful Return 0x1003)
0x0004 Maintenance Waiver (Successful Return 0x1004)
If the wrong cipher code is entered, the error code Ennn will be sent back to exempt the loss, during which nnn indicates that there is a ...
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Delta's M300 series inverters are used in primary and auxiliary frequency applications
I. Introduction
Some devices will have many transmission organizations, and it is impossible for the transmission organization to achieve 100% speed synchronization, so it is necessary to introduce ------ The final motor speed of the pendulum roller is *** := main speed + (+-auxiliary correction change)
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Delta's B2 series servo motor parameter setting
Automatic:
P0-02 Drive Status Display Parameter Function: 07Motor Speed (r/min)
P1-01 Control form and control command input source setting parameter function: 02 Select S form (r/min)
P1-38: Zero speed detection accuracy (no response below set speed)
P1-4 ...
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Inverter maintenance is easy to ignore the problem - Delta
1. After the inverter is repaired, the power number needs to be corrected, don't forget it
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The inverter has a built-in PLC function - Delta
PLC progressive scanning standard work preparation.
Abundant programming language: instruction statements; ladder diagram; SFC。
Abundant instruction statements: 45 instruction varieties, including 28 root instructions and 17 usage instructions.
350 step law capacity.
uS-level root directives ...
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Delta has always been the shipment champion in Taiwan's inverter market
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1. According to the requirements of the device parts, the method and the maintenance function are required, and the type of motor maintainer and its various maintenance action parameter settings are reasonably selected;
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Misunderstandings in the application of Delta inverters
The capacity selection of the inverter is based on the rated power of the motor
Myth: The capacity selection of the inverter is based on the rated power of the motor
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After the inverter is installed, disconnect the output of the inverter, use the diode file of the digital meter to measure the input and output of the inverter before the power is not turned on, ensure that there is no short circuit, and then turn on the working power supply of the inverter.
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Analysis of misunderstandings in the application of Delta inverters
The capacity selection of the inverter is based on the rated power of the motor
Myth: The capacity selection of the inverter is based on the rated power of the motor
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