Servo - what is it? How to make and connect the servo with your own hands?

Servo drives are devices that are designed to control devices. This process is carried out with the help of feedback. For today, asynchronous and synchronous modifications are distinguished. On the device models can vary quite a lot. It should also be noted that there are modifications of the linear type. They differ by a large acceleration parameter.

According to the principle of operation, servo drives are electromechanical and electrohydromechanical types. Meet the above devices are most often possible in the industrial sector. There they are responsible for the operation of various equipment. In particular, servos are engaged in the control of machine tools.

Device

The servo drive circuit includes a sensor, a power supply, and a control board. Additionally, in the models you can find a converter. Most often it is installed in a linear type. In this case, much depends on the drive. It is presented in the servo, as a rule, in the form of an electric motor with a reducer. However, today there are many modifications with pneumatic cylinders.

How to assemble a model?

Making a servo with your own hands is quite easy. If you consider a simple modification, you should first choose the housing for the device. In this case, much depends on the dimensions of the drive. For a self-made device, it is more reasonable to use a low-power electric motor. In this case, the gear box must be installed side by side.

Further, in order to assemble the servomotor with your own hands, you need to select an analog type potentiometer. In the store it will not be difficult to find. After this, you should do the installation of the sensor. As a rule, the control board is selected by the PP20 series. For rotary controls it fits well. At the end of the job, it will only be necessary to install the converter. All this is necessary in order to connect the device to the network.

Model for heating

The servo drive for heating in our time is very popular. These devices differ in the high parameter of the limiting frequency. Motors are most often used in models asynchronous type. At the same time, their power is at the level of 2 kW. To transfer the torque to the shaft, small gears are used. To date, the most common is the servo drive for heating with analog potentiometers.

However, digital models are also not uncommon. To increase the throughput of the device, special controllers are used. In this case, management fees are set the most diverse. To connect the device to the network, converters are usually used. In our time, most often they can be met linear type. Repair of the servo drive for heating can only be done at a service center.

Device with valve

The valve with the servo drive, as a rule, is used in industrial sphere. There, he is responsible for adjusting the machines. A distinctive feature of these models is considered to be powerful engines. At the same time, the limiting frequency parameter reaches 22 Hz. All this, in the long run, gives the instruments a good acceleration. Directly the motors can be found mostly asynchronous type. Connection with the shaft The valve with the servo drive has a gear type. Regulators in such devices are found turning and push-button type. In this case, the valves can only be used one-sided.

Model for the stove

The servomotor of the stove has an average power of 2 kW. The engines are most often installed asynchronous type with a limiting frequency at 31 Hz. A distinctive feature of such devices is considered to be the presence of a resistive element. His job is to increase the capacity of the model. Reducers are most commonly installed in the low-frequency type. In addition, it should be noted that the market has many modifications with potentiometers.

Management boards, as a rule, have a series of PP20. For multi-function control of the stove, they are ideal. In this situation, the output shafts are connected directly to the gearbox box. All this is necessary in order to increase the torque. As a lever manufacturers use the shoulder. It is usually not of a large size. The servomotor of the stove is connected to the mains via special contacts on the converter. In this case, the stator can be connected to the device. Additionally, the servo drive is perfectly capable of performing the functions of an amplifier.

Device for damper adjustment

The servomotor of the damper can be made even independently. In this situation, it makes sense to select an electric motor with a power of not more than 2 kW. Otherwise, the output shaft will not withstand heavy loads and breaks. When assembling the gear box is first installed. Pneumatic cylindrical devices are used quite rarely.

The stators in the servomotor of the damper are often mounted electronically. The converter is installed in the model only after the shoulder. Then you need to pay attention to the management board. The output shaft in this case must be fixed to the axis. For this purpose, metal wire is selected not of large dimensions. Lastly, it only remains to connect the wires to the converter. Then they will be directly connected to the control unit.

Model with a crane

The valve with the servo-drive allows to regulate the water pressure. To meet the device of this type is most often possible in the industrial sphere. In this case, only pneumatic cylinders are used. In turn, electric motors are rare. Stator boxes for the servo drive are suitable for hand type. To adjust the device must be provided a special board.

To date, many manufacturers prefer the modification of PP20. Directly controllers are installed in a rotary type. Connecting the servo to the network is carried out using a converter. In the market today, both nonlinear and linear types are represented.

Synchronous modifications

Synchronous servo drive - what is it? In fact, this device is used to adjust machines. Moreover, in ventilation systems they are also in demand. Sensors for models are installed, as a rule, agile type. In this case, the engine power can vary from 1 to 3 kW. The converter deserves special attention in devices. It is installed, as a rule, on two contacts. However, there are other modifications.

Stators are used digitally, and they can be adjusted with the help of a controller. Another distinguishing feature of these devices is considered to be the presence of encoders. These details are required for feedback. The parameter of limiting frequency for servo drives does not exceed 35 Hz. The device can only be connected to the network via terminals. In addition, it should be noted that the resistive mechanisms are usually used as a low-frequency type. Independently folding the servo is quite difficult. However, in this case, much depends on the type of management fee.

Asynchronous servo drives

Asynchronous servo drive - what is it? In fact, this device is intended solely for equipment that the power supply has 15 V. In this case, the power of the device, as a rule, does not exceed 2 kW. The maximum load of the potentiometer in the models is able to withstand a level of 23 A. For transmission of torque from the motor, not large output shafts are used. In this case, the lever moves due to the gear.

The change in speed is due to the controller. The servo drive is controlled by means of a special board. In some cases, the lever is used to change the position of the regulator. Resistive devices are most often installed low-frequency devices. At the same time, servo drives on pneumatic cylinders are very rare today. In order to assemble this modification independently, a powerful reducer is required. Also for it it is necessary to choose a stator of a manual type.

Servo-Drive Modifications of Linear Motion

Linear motion servo - what is it? In fact, this device is a feedback controller. To date, the models are very in demand. For different heating systems, they are ideal. Converters in them are most often used for three contacts. Stator boxes are installed in different capacities. The motors can be used only as a synchronous type.

Otherwise, the power supplies can not withstand the voltage limit. Gearboxes are used as drives in this situation. Gears are used to transfer torque from the engine. Today, there are many modifications on the market with the output shaft. In this case, you can control the speed of revolutions with the help of the controller. Also, remember that the devices have special boards. They are installed with the marking P20. The mode is changed in this case at the expense of the controller. Rotor modifications of servo drives in our time are rare. They are used most often to control machines.

Devices for industrial robots

For industrial robots, servo - what is it? In fact, this device is a multifunctional controller. In this case, the boards use the PP30 series. Due to this, the user has the opportunity to adjust the parameter of the limiting frequency. On average, it fluctuates around 25 Hz. Devices of this type operate from 15 V power supply units.

The servo drive is controlled frequently by means of a rotary type control. However, digital analogs in our time are not uncommon. Rotors are used in devices exclusively low-frequency. All this is necessary for rapid acceleration of the servo. Potentiometers can be found both analogue and digital type. Reducing boxes by design can be quite different. It is difficult to assemble a servo drive of this type independently. In this case, the problem is finding the correct controller.

Servo-drive models for printing machines

For printing machines, models are required with synchronous motor types. Their power is required to reach 2 kW. The parameter of the limiting frequency is welcomed at the level of 30 Hz. To date, most manufacturers produce servo drives with analog potentiometers. It should also be noted that the gear boxes are usually used flat. All this is necessary in order for the device to be compact.

The rotors deserve special attention in servos of this type. The conductivity index must be at least 3 microns. All this is necessary for good acceleration. Output shafts in this case are of small diameter. Converters can usually be found on three contacts. For 20 V power supplies they fit perfectly. Stator boxes are installed in various shapes and can vary greatly in design. In this situation, much depends on the encoder, which is installed in the servo.

Sewing machine devices

Servo drives of this type differ from other devices in their compactness. The engines of such models are often found asynchronous type. From a network with a voltage of 220 V they work without any problems. The regulator in this case is of the rotary type. The maximum power limit parameter reaches 1.2 kW. The threshold frequency in this situation barely reaches 20 Hz. Potentiometers are used only in analog type.

Reducing boxes for this modification are suitable for low power. Servo drives for two gears come across quite often. However, rotors are generally installed to transmit torque from the motor. Output shafts have a low speed. At the same time, the load on the shoulder is small. Controllers in this case are single-channel. At the same time, the user can not change the power parameter. The feedback sensor in servo drives of this type is located near the stator.

Servo Drive Modifications for Packing Machines

The model of this type most often works from the movement of pneumatic cylinders. In this case, power supplies are often used at 12 V. In this case, protection systems are installed quite often. Converters can be found on two and three contacts. Stator boxes are installed in various configurations. In some cases, feedback sensors in servo drives are replaced by encoders. Rotor boxes for limiting voltage must be calculated in the region of 12 V. Resistive mechanisms in devices are quite rare.

It is possible to assemble the servo drive of this type independently. For this purpose, it is best to choose an analog potentiometer. In this case, it is better to use the converter for two contacts. Instead of the encoder, many experts recommend using feedback sensors. However for their successful operation it is necessary to check the device for sensitivity. The regulator is easiest to use a swivel type of plastic. Modulators apply only single-channel.