A servo motor is a type of electric motor used in precise motion control systems that require high accuracy and positioning. It uses a feedback control system to monitor and adjust its position and speed, allowing it to move precisely to specific angles or distances. Servo motors are commonly used in robotics, CNC machines, and automation systems. They can provide high torque and speed while maintaining high accuracy and reliability. The servo motor can control speed with very accurate position accuracy, and can convert voltage signals into torque and speed to drive the control object. The rotor speed of the servo motor is controlled by input signals and can react quickly. In automatic control systems, it is used as an executing element and has characteristics such as small electromechanical time constant and high linearity. It can convert the received electrical signal into angular displacement or angular velocity output on the motor shaft. It is divided into two categories: DC and AC servo motors, and its main feature is that there is no self rotation phenomenon when the signal voltage is zero, and the speed decreases uniformly with the increase of torque. Our company sells various brands of servo motors, such as 1.Allen-Bradley: 1326AB-B740C-S2L, 2004-RZ02BA1AN3, H-4050-P-H00AA, HPK-B1307C-MB44AA, MPL-A420P-SJ72AA, MPL-A430H-HJ24AA, MPL-B420P-MJ22AA, MPL-B430P-MJ24AA, RSMZ-04BH6ANK3, RSMZ-08BH6ABK3, TL-A2530P-HJ32AN 2.ABB: 3HAC17327-1/01、LC440TGR0002, PS-130/6-50-2P-PMB-4056, PS-130/6-60-P-LSS-4057, PS-90/6-57-P-LSS-4280,               PS-90/6-79-P-PMB-3773, SDM251-000N5-055/40-2000, SDM251-000N5-055/60-2000, T4F2BR0511 3.SIEMENS: 1FK6042-6AF71-1TA0, 1FK7063-5AF71-1KH5,A5E03326159, 6SN2132-1CU11-1BA0,6SL3000-0CE15-0AA0, 6SL3562-6DF71-0RG1,1FK6042-6AF71-1TH2-Z,1FK6060-6AF71-1TA0,1FK6063-6AF71-1TG0 4.CT/Emerson: 107U2B200VBFCA13014X, 75DSA600C, 95DSC600C, R142DSC450C, XVM-402-TONS-D001,                             95EZA300CACAA-UL,142U2D150CACAB165240 5.SANYO: 103-546-0241, P20B13500HXSH6E, P50B07040DXSG2, R2AA08040FCHCW, V404T-012,                    V506BT-412, 103H8222-5111,R2AA08075FXPF6,P50B04010DCL9W 6.Lenze: CFM71M/BR/HR/TF/RH1L/SB50, MDSKABS080-22, MDSKSBS056-33, SSN40-1GVAR-063C22,MDSKSRS036-13   So, how is the servo motor debugged before use? 1. Initialization parameters    Before wiring, initialize the parameters first.   On the control card: select the control method; Clear the PID parameters to zero; When the control card is powered on, the default enable signal is turned off; Save this state to ensure that the control card is in this state when powered on again.   On the servo motor: set the control mode; Set to enable external control; The gear ratio output by the encoder signal; Set the proportional relationship between the control signal and the motor speed. It is recommended to set the maximum design speed during servo       2. Wiring   Power off the control card and connect the signal wire between the control card and the servo. The following lines must be connected: the analog output line of the control card, the enable signal line, and the encoder signal line of the servo output. After reviewing the wiring without any errors, power on the servo motor and control card (as well as PC). At this point, the motor should not move and can easily rotate with external force. If this is not the case, check the setting and wiring of the enable signal. Rotate the motor with external force and check if the control card can correctly detect changes in motor position. Otherwise, check the wiring and settings of the encoder signal.      3. Test direction   For a closed-loop control system, if the direction of the feedback signal is not correct, the consequences will definitely be catastrophic. Turn on the enable signal of the servo through the control card. This is when the servo should rotate at a lower speed, which is known as "zero drift" in legend.   Generally, there are instructions or parameters on the control card to suppress zero drift. Use this command or parameter to see if the speed and direction of the motor can be controlled through this command (parameter).   If it cannot be controlled, check the parameter settings of the analog wiring and control method. Confirm that a positive number is given, the motor rotates forward, and the encoder count increases; Given a negative number, the motor rotates in reverse and the encoder count decreases.   If the motor carries a load and has limited travel, do not use this method. Do not apply excessive voltage during testing, it is recommended to keep it below 1V. If the directions are inconsistent, the parameters on the control card or motor can be modified to make them consistent.      4. Suppress zero drift   In the closed-loop control process, the presence of zero drift will have a certain impact on the control effect, and it is best to suppress it. Use the control card or servo to suppress zero drift parameters and carefully adjust them to make the motor speed approach zero. Due to the randomness of zero drift itself, it is not necessary to require the motor speed to be absolutely zero.      5. Establish closed-loop control   Once again, release the servo enable signal through the control card and input a small proportional gain on the control card. As for how large it is, it can only be considered small based on feelings. If you are really not confident, enter the minimum value allowed by the control card. Turn on the enable signal of the control card and servo. At this point, the motor should be able to roughly follow the motion instructions.      6. Adjusting closed-loop parameters   Fine tuning of control parameters to ensure that the motor moves according to the instructions of the control card is a necessary task, and this part of the work is more about experience, which depends on daily accumulation.  

   How to choose a suitable Inverter for existing motors? There is a certain amount of knowledge and a little skill in this. As a professional electromechanical equipment service provider, Rockss Automation not only helps customers choose motors well, but also cannot make careless choices about motor control. So, let's analyze and analyze today how Siemens Inverters can be perfectly combined with Siemens motors. SIEMENS 6SE3211-5BA40 Inverter       The commonly used types of Siemens Inverters are as follows: 6SE6440, 430, and 420. Usually, the choice between these three is also meticulous. Here are a few points for everyone from Rockss Automation: 1. Products powered by 380-480VAC and without filters are commonly used in Siemens 440 series Inverters. Just find the corresponding model for the 440 series. 2. There are two types of product oils for partial power consumption: imported with original packaging and domestically produced. The price of domestically produced products is cheaper compared to pure imported products. 3. The power corresponding to the Inverter model refers to the high torque output power. 4. Generally, the standard Siemens Inverter is optional and does not include a control panel. The control panel needs to be ordered separately. The control panel includes both Chinese and English versions. The English control panel is a bit cheaper than the Chinese one. SIEMENS 1FK7101-5AF71-1SA0 Motor      As mentioned above, the 440 series Siemens Inverter commonly used for 380V voltage of domestic standard motors. So, how to choose a suitable 440 series frequency converter? 440 power range: 0.37-255kW. Among them, 0.12kW-200kW (CT constant torque); 0.12kW-250kW (VT variable torque). Generally speaking, the Inverter is matched according to the power of the motor, and the ratio is 1:1 original. If the distance between the heavy load and the Inverter is relatively long, the power of the Inverters one to two levels higher than the power of the motor. If a Inverters equipped with multiple motors, it is sufficient to choose one level higher than the motor power, which is not the total power of the motors carried.     When selecting a Inverter, the following parameters should generally be considered:   1. Power   Choose the high-power Inverter for the high-power motor. However, for special occasions such as high temperatures and altitudes, it can cause a reduction in the capacity of the frequency converter, making it easy for the Inverter to amplify by one gear.   2. Current The rated current of the Inverter is greater than the maximum current of the motor operation, and it is generally marked on the nameplate.   3. Supply voltage   Generally, low-voltage frequency converters have single-phase 220-240V, three-phase 380-480V power supply, etc. The specific selection is rated according to actual needs.   4. Load inertia   In some situations, such as most ventilation ducts, there is no requirement for the motor to stop in a timely manner, while in some transmission belts, it is required to stop in a timely manner, so it can also be used as a reference condition for selecting frequency converters. SIEMENS 6SE3210-7BA40 Inverter    A Siemens Inverter can control multiple motors. This application situation is commonly referred to as "one dragging many". It has been running for many years and rarely malfunctions. However, it is important to pay attention to the following points when dragging a frequency converter:    1. The control method must use linear V/F control    2. One drag multiple is only used in situations where there are no strict requirements for motor speed regulation;    3. The total rated current of each motor should be less than the rated current of the variable frequency;    4. Independent thermal relays should be installed on each motor.    5. The power of each motor should be consistent as much as possible    6. The differences in physical characteristics of each output circuit should be minimized, including:    A. Motor characteristics, such as speed;    B. Cable characteristics, such as cross-sectional area, length, and material.    7. If the motor characteristics are basically consistent and the cable length approaches the allowable limit length of the frequency converter, methods such as increasing the outlet reactor, reducing the switching frequency, and appropriately increasing the Inverter can be adopted.      For mid-range applications, customers usually consider Siemens or ABB when choosing frequency converters. Indeed, in certain high-end special industries such as lifting and steel rolling, I personally believe that using frequency converters from foreign brands such as Siemens will provide more protection and fewer malfunctions. It's a lot easier to use in the later stage.