There are substantial differences between servos and inverters in terms of application intention and function. Which one to choose depends on factors such as operating mode, load conditions, price, etc. Basically, the performance of the servo is superior to that of the inverter. Therefore, when changing from an inverter to a servo, there is generally no operation problem. However, it is necessary to consider the following points.
Rigidity on the mechanical side
The highest torque of the servo is about 2 times that of the inverter. Therefore, if the mechanical structure is fragile, oscillation (oscillation phenomenon) may occur during acceleration and deceleration. In this case, it is necessary to adopt measures such as strengthening the mechanical structure and reducing the gain (control sensitivity) of the servo system.
Load inertia (inertia) converted to motor shaft
Compared to frequency converters, servos are sensitive to the size of the load inertia. In relation to the moment of inertia of the motor itself, if the moment of inertia of the load is too large, the motor shaft will be dragged and rotated by the load, resulting in unstable handling. Therefore, it is important to select the right servo capacity for the mechanical load.
Oscillation of the motor shaft
When mechanical oscillations occur in the part where the motor is mounted, the shaft of the motor is affected. Especially for servo motors with built-in encoders, it is sometimes necessary to reduce oscillation.
Slowing down the slippage of the tissue
The basic concept of servo is accurate, accurate, and fast positioning. Frequency conversion is a necessary internal link of servo control, and frequency conversion (stepless speed regulation) also exists in the servo drive. However, the servo closes the current, speed, or position loops for operation. In addition, the structure of the servo motor is different from that of the ordinary motor, and it is necessary to satisfy the fast response and accurate positioning. Now the communication servo motor circulating on the market is mostly permanent magnet synchronous communication servo, but this motor is subject to process constraints, it is difficult to achieve a lot of power, more than ten KW synchronous servo price and its preciousness, so that in the case of on-site use of the agreement, the communication asynchronous servo is selected, then the control system becomes the closed-loop control of the inverter with encoder reaction, that is, the high-end frequency conversion control. The so-called servo is to be satisfied with accurate, accurate and fast positioning, as long as it is satisfied, there is no dispute over servo frequency conversion.
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The common sense principle of the inverter - Delixi inverter
The fuses should be installed on the lines of each phase. It is strictly forbidden to install fuses on the neutral line of the two-phase three-wire or three-phase four-wire circuit.
Fuses are mainly used for short-circuit maintenance.
When the fuse is used for blocking purposes, the fuse must be installed.
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The impact of inverter cable design on the life of the motor and cable - Delixi
Reflected waves caused by a cable-motor impedance mismatch are prevalent in all AC VFD uses. The severity of the problem depends on the length of the cable, the rise time of the PWM (Pulse Width Modulation) carrier, the voltage of the VFD, and the magnitude of the impedance difference between the motor and the cable.
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Delixi inverter built-in bypass soft starter CDRA-K3
Delixi built-in bypass soft starter CDRA-K3 series is a set of soft start, soft parking and multi-functional protection in one of the motor control equipment. Realize a smooth starter motor without impact during the entire starting process. CDRA-K3 series has built-in bypass contactor and control power supply.
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The difference between Delixi soft start and inverter
Features of the soft starter:
The motor can be soft-started, soft-stopped, and soft-stopped.
It can achieve a small impact on the machine-to-power grid.
It is much smaller than the Star-Delta starter and the installation is simple.
Frequency converters ...
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Delixi inverter speed parameters
There are two speeds of Delixi inverter, one is the target speed, and the other is the speed of practice.
The target speed requires the value of the detailed parameters to be adjusted, such as the *** high frequency/*** high frequency in the inverter parameters; Regarding the practical output speed, the frequency needs to be checked in the inverter parameters ...
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Analysis of common problems of Delixi inverter
1. Is it possible to put the motor directly into a fixed frequency inverter without using soft start?
It is possible at very low frequencies, but if the given frequency is high, the conditions for direct starting of the power supply are similar. A large starting current (6-7 times the rated current) will flow too much, due to ...
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The circuit breaker is set in accordance with the principle - Delixi circuit breaker
1. When the main circuit is equipped with a total leakage maintainer, the main barrier switch, the branch barrier switch, the main circuit breaker, the branch circuit breaker or the main fuse, and the shunt fuse should also be installed. When the total leakage maintainer is a leakage circuit breaker with short-circuit, overload, and leakage maintenance functions, it can not be ...
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Delixi spare parts replacement cycle
1. Cooling fan (2-3 years)
As long as the inverter is in use, the cooling fan has always been running, so the cooling fan is generally a short-service life accessory, generally after the use of the cooling fan for 2-3 years, the bearings, balls, motors, etc. of the fan are seriously worn, and they need to be replaced.
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Analysis of the quality of Delixi surge protector
Look at the quality of the surge protector, to see whether it can complete his basic specification, relative to the surge protector of the primary specification is whether the surge operating voltage can be constrained below the required value, the surge protector must discharge the lightning current when the mission is completed, this specification must be completely completed.
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Reducer troubleshooting method - Delixi
01 "O" ring spell
In addition to the oil seal problem of the reducer itself, the robot manufacturer will also have an impact on the planning and installation of the reducer components, due to the sealing of the reducer, in addition to the oil seal, there are also O-rings.
O-rings are a very common type of product sealing planning.
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Introduction to the type classification of voltage regulators - Delixi
Voltage regulators have become an integral part of many appliances in household, industrial, and commercial systems. Earlier, manually operated or switchable regulators were used to raise or lower the input voltage to supply the output voltage within the desired range. This stabilizer is built with electromechanical relays as switchgear ...
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The role of Delixi AC voltage regulator
Delixi high-precision fully active AC voltage regulator uses linear integrated circuits to form a control system, controls the servo motor, drives the contact voltage regulator to actively regulate the voltage, and is equipped with delay, overvoltage, undervoltage and overcurrent maintenance functions. The product has high efficiency, the same input and output voltage waveforms, and the output ...
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Inverter maintenance technology - Delixi inverter
(1) Fault characteristics
a) *** tripping may occur during operation, but if it is restarted after resetting, it often trips as soon as the speed rises.
b) has a large inrush current, but most drives can already be tripped, maintenance without damage. Due to the ...
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Delixi indicator light failure and solutions
1. What should I do if the indicator light is on and when it is dark
Generally, the reason for this situation is that the line contact is poor or the screws of the terminal are not tightened, we should check the condition of the line, connect the power cord and tighten the screws, and press the wire. ...
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The material of the transformer - Delixi
In view of the regulation and control effect of the transformer in the power system, technicians need to choose the appropriate transformer finishing device operation, so as to play a normal effect. Winding data is the primary problem that transformer devices need to pay attention to, and the effects of devices of different materials are different. Concerning...
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Characteristics and parameters of industrial molded case circuit breaker - Delixi
1. Extra limit short-circuit breaking can be used for Icu
There are two types of breaking capacity targets for circuit breakers: additional limit short-circuit breaking capacity of 4U and additional operating short-circuit breaking capacity Ics. As a characteristic parameter, ICS is not only a brief consideration of the breaking ability of the circuit breaker, but also a breaking purpose.
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The difference between the poles of Delixi circuit breaker
Circuit breakers account for a very large proportion of electrical sales and have a wide range of applications, but there are different standards for circuit breakers. For example, 1P, 1P+N, 2P, etc., there are also differences between them.
1. 1P circuit breaker, it is a single-stage ...
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Delixi solid state relay over AC contactor advantages
Delixi solid state relay and Delixi communication touch device are more used products, so what are the advantages of solid state relay compared to communication touch device, how should we choose when we can choose?
1. First of all, solid...
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Delixi uses three-phase regulators need precautions
1. If the fuse is burned out, please approve the load equipment as soon as possible, make repairs in time, and restore power;
2. If you use a fixed amount of fuse, please use a regular line, and do not match it at will, so as not to cause ...
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Precautions for the use of Delixi leakage protector
1. If the two branch lines are connected, the current in the zero line flows to each other, which destroys the operating current balance in the zero sequence current transformer and causes the leakage maintainer to malfunction. If you want to use the neutral line of the power branch line as the neutral line of the lighting branch line nearby, it will cause the leakage of the power branch line.
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