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MHMJ082P1S panasonic electric brushless MHMJ series AC servo motor
Product Details:
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Detailed Product Description
| Type: | AC Servo Motor | Ac Voltage: | 200-240v |
|---|---|---|---|
| Frequency: | 50/60Hz | Product Name: | Panasonic Electric Brushless Servo Motor |
| Warranty: | 12 Months |
Detailed data :
| Brand : | Panasonic | Model : | MHMJ082P1S |
| Type : | AC servo motor | Product name : | Brushless AC servo motor |
| Color : | silvery | Place of original : | China |
MHMJ082P1S Panasonic Electric Brushless MHMJ Series AC Servo Motor
The function of a servo amplifier is to compare, amplify, and calculate the input command signal (voltage) with the system feedback signal (voltage), and output a deviation voltage signal
Proportional control current is applied to the torque motor control coil of the servo valve, controlling the opening of the servo valve core and providing amplitude limiting protection.
Parameter requirements for servo amplifiers
As an electronic device for driving electro-hydraulic servo valves, servo amplifiers have certain requirements for their corresponding parameters:
(1) The input voltage is within ± 10 V, which facilitates the control of command components such as computers and programmable controllers:
(2) Output current ± 10-+100n approved adjustment to adapt to various models of torque motor servo valves;
(3) The linearity error of the servo amplifier is less than 3% Fs;
(4) Having a feedback access terminal to form a closed-loop control system;
(5) To adapt to the high-frequency response characteristics of the servo system, the servo amplifier has a bandwidth greater than 1200 Hz;
(6) It has the function of limiting large output current and protecting against output short circuits, which can limit the large flow rate of servo valves and prevent faults caused by output line short circuits.
The principle of servo amplifier
The servo amplifier is composed of modules such as command and feedback comparison processing, zero adjustment circuit, current limiting circuit, preamplifier, power amplifier, etc. Its structural diagram is shown in Figure 2
As shown in.
The function of the preamplifier circuit is to compare and amplify instructions and feedback input signals. The circuit K Fbk represents the input signal and feedback signal, respectively
Adjust the circuit gain through the potentiometer to meet the requirements of the power amplifier circuit, so that the circuit voltage can match the front and rear stages.
The function of the zero adjustment circuit is to adjust the circuit reference voltage by adding an adjustable voltage to the preamplifier circuit. By adjusting the potentiometer to compensate for zero bias
Server amplifier system bias.
The function of the current limiting circuit is to limit the large current flowing through the servo valve coil, avoid coil overload, protect the servo valve, and limit the large flow rate of the hydraulic system. This circuit is composed of an operational amplifier
ULD, U2A, diode D D: And adjustable voltage source through potentiometer R., Adjust the amplitude of the input voltage of the power amplifier stage to reach the limit output
Current output purpose. The function of a power amplifier circuit is to convert and amplify a low-power voltage signal into a high-power current signal, in order to provide sufficient servo valve rating
The current is used to drive the load, and it requires good anti-interference ability and static and dynamic performance. This circuit utilizes the poles of NPN and PNP type transistors to generate
The stages are interconnected, with signals input from the base and output from the emitter. The circuit can be seen as a combination of two emitter outputs, forming a push pull power amplifier
The circuit operates within the positive and negative half cycle of the input signal. In addition, a high-frequency rated vibration signal generated by the 8038 chip can also be added to the output current to improve
High servo valve resolution and prevention of valve core sticking due to Coulomb friction.
Calculation of output current of servo amplifier
The servo valve coil is the load of the servo amplifier, which is equivalent to the inductive impedance composed of 0.3H inductance and 800 resistance. In order to make the output control current of the power stage proportional
Dry input voltage signal, using an electric cathode. Connect with the load coil and feedback the voltage on it to the inverter input of the amplifier through the cathode, achieving closed-loop control
Control and adjust the output current of the power stage, because the feedback voltage of the power stage is generated by the current, it is called current negative feedback. After introducing current negative feedback, the rated voltage
Within the load range, the change in load impedance does not affect the change in output current of the power stage, and the servo amplifier acts as a constant current source.
The function of the preamplifier circuit is to compare and amplify instructions and feedback input signals. The circuit K Fbk represents the input signal and feedback signal, respectively
The gain of the circuit is adjusted through the potentiometer to meet the requirements of the power amplifier circuit and make the circuit voltage match the front and rear stages.
The function of the zero adjustment circuit is to adjust the circuit reference voltage by adding an adjustable voltage to the preamplifier circuit. By adjusting the potentiometer for zero offset compensation, the signal
Server amplifier system bias.
The function of the current limiting circuit is to limit the large current flowing through the servo valve coil, avoid coil overload, protect the servo valve, and limit the large flow rate of the hydraulic system. This circuit is composed of an operational amplifier
ULD, U2A, diode D D: And adjustable voltage source through potentiometer R., Adjust the amplitude of the input voltage of the power amplifier stage to reach the limit output
Current output purpose. The function of a power amplifier circuit is to convert and amplify a low-power voltage signal into a high-power current signal, in order to provide sufficient servo valve rating
Current to drive the load. And it requires good anti-interference ability and static and dynamic performance. This circuit utilizes the base and emission of NPN and PNP type transistors
The stages are interconnected, with signals input from the base and output from the emitter. The circuit can be seen as a combination of two emitter outputs, forming a push-pull power amplifier
The circuit operates within the positive and negative half cycle of the input signal. In addition, a high-frequency flutter signal generated by the 8038 chip can be superimposed on the output current to improve
High servo valve resolution and prevention of valve core sticking due to Coulomb friction,
The output current of the servo amplifier is calculated as the load of the servo valve coil, which is equivalent to the inductive impedance composed of a 0.3 H inductance and an 80 Q resistance
The output control current of the power stage is proportional to the input voltage signal, and a resistor is used. Connect in series with the load coil and feedback the voltage on it to the amplifier through a resistor
The reverse input terminal of the power cooling stage achieves closed-loop control and adjusts the output current of the power stage, because the reverse voltage of the power cooling stage is generated by the current, it is called current negative feedback. already
After the negative feedback of the input current, within the rated load range, the change in load reactance basically does not affect the change in output current of the power stage, and the servo amplifier is equivalent to a constant current Source.
Contact Details
LINTURE Technology CO.,LTD
Contact Person: Miss. Iris
Tel: 86-17728602038
Send your inquiry directly to us
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