Product Description
Structure and working principle of servo motor:
Servo motor is 1 of the commonly used motor,it is a motor that absolutely obeys the command of the control signal.Before the control signal is sent, the rotor is stationary;when the control signal is sent,the rotor rotates immediately;when the control signal disappears, the rotor can stop immediately.
As a special type of motor,synchronous servo motor is different from most other motors,it is designed for precise positioning,rather than speed controlling.
80ST,220V(1PHASE,3PHASE)
110ST,220V(1PHASE,3PHASE)
130ST,220V(1PHASE,3PHASE)
180ST,220V,380V
AC SERVO DRIVER,SG200
Since the development of AC servo technology in the early 1980s,the technology has become increasingly mature and the performance has been continuously improved.Now it has been widely used in CNC machine tools, printing and packaging machinery,textile machinery,automatic production lines and other fields.
SG Series AC servo is a new generation of AC servo driver independently developed by our company. It mainly uses the latest 32-bit DSP as the core remote computing unit, and adopts complex programmable device EPLD and CHINAMFG intelligent power module.It has a series advantages such as high integration,small size,fast response,perfect protection, and high reliability.
Using temperature:-10ºC-55ºC
Humidity:less than 90%(No condensation)
Vibration:less than 0.5g(4.9m/s2)
Working duty:continuously
Technical parameter:
| Model | SG200 Series | ||
| Input power supply | Single phase or 3 phase,AC220v(-15%-20%,50/60Hz) | Three phase, AC220v(-15%-20%,50/60Hz) | |
| Use environment | Temperature | Using:0°C-55°C;Storage:-20°C-80°C | |
| Humidity | Below 90%(no condensation) | ||
| Control mode | Position control;Speed control;Torque control;Jog control | ||
| Regenerative braking | Built-in | ||
| Control characteristics | Speed frequency response | <400Hz | |
| Speed fluctuation rate | <±0.03(load 0-100);<±0.02(power -15%-10%),the value corresponds to the rated speed | ||
| Pulse frequency | ≤500kHz | ||
| Control Input | servo enable; alarm clear; ccw drive prohibited; cw drive prohibited; Deviation counter clearing/speed selection 1/zero speed clamping; Command pulse prohibited/speed selection 2 | ||
| Control output | servo is ready to output; servo alarm output; position finish output/speed arrive output ;mechanical brake output | ||
| Position Control | Input method | pulse+symbol; ccw pulse/cw pulse; 2phase A/B quadrature pulses | |
| Electronic gear | 1-32767/1-32767 | ||
| Feedback pulse | 2500lines/rotation | ||
| Protection function | Overspeed, overvoltage and undervoltage of main power supply, overcurrent, overload, braking abnormality, encoder abnormality, control power abnormality, position out-of-tolerance, etc | ||
| Monitoring function | Speed, current position, command pulse accumulation, position deviation, motor torque, motor current, linear speed, rotor absolute position, command pulse frequency, operation status, input and output terminal signal, etc | ||
AC SERVO DRIVER,M SERIES
| Model | M Series | ||
| Input power supply | Single phase or 3 phase 220VAC | Three phase 220VAC | |
| Control mode | Single phase or 3 phase full wave rectification/PWM control sine wave drive mode | ||
| Encoder feedback | 2500 lines incremental encoder,17bit,23bit absolute encoder | ||
| Pulse signal input | Direction+pulse;A/B phase orthogonal pulse;CW/CCW pulse | ||
| Differential input:500Kpps | |||
| Open collector input:200Kpps | |||
| Digital input | 8-channel digital input,which can allocate and change signals | ||
| Analog input | 2-channel analog input function | ||
| Communication interface | RS-232:applicable servo driver debugging;RS-485:applicable for customer on-site networking communication | ||
| Control mode | Position control;speed control;torque control;position/speed control;speed/torque control;position/torque control | ||
| Basic performance | Response band width:3KHz | ||
| Speed adjust range:1-8000rpm | |||
| Troque control accuraccy:±2% | |||
| Speed variation rate:≤0.5% | |||
| Soft start time setting:0-60S | |||
| Built-in function | Motor load inertia identification function,vibration suppression function,feedforward compensation function,various PID control strategies | ||
| Overtravel prevention function,emergency parking brake in case of overtravel | |||
| Electronic gear ratio function:electronic gear ratio can be set arbitrarily | |||
| 16 stage position control function,16 stage speed control function,interrupted fixed length function | |||
| Protection function | Over voltage, over current, overload,overspeed,under voltage,overheating,encoder failure,power phase loss,abnormal regenerative braking,fan failure,etc | ||
| Use environment | Temperature | Using:0°C-45°C;Storage:-20°C-85°C | |
| Humidity | Below 90%(no condensation) | ||
| Protection | IP20 | ||
| Altitude | Below 1000m | ||
| Vibration | Below 4.9m/s2 | ||
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| Application: | Industrial |
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| Operating Speed: | Constant Speed |
| Operation Mode: | Electric Motor |
| Magnetic Structure: | Permanent Magnet |
| Function: | Driving |
| Number of Poles: | 4 |
| Customization: |
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How does the cost of servo motors vary based on their specifications and features?
The cost of servo motors can vary significantly based on their specifications and features. Several factors influence the price of servo motors, and understanding these factors can help in selecting the most cost-effective option for a specific application. Let’s explore in detail how the cost of servo motors can vary:
1. Power Rating:
One of the primary factors affecting the cost of a servo motor is its power rating, which is typically measured in watts or kilowatts. Higher power-rated servo motors generally cost more than lower-rated ones due to the increased materials and manufacturing required to handle higher power levels. The power rating of a servo motor is determined by the torque and speed requirements of the application. Higher torque and speed capabilities often correspond to higher costs.
2. Torque and Speed:
The torque and speed capabilities of a servo motor directly impact its cost. Servo motors designed for high torque and high-speed applications tend to be more expensive due to the need for robust construction, specialized materials, and advanced control electronics. Motors with higher torque and speed ratings often require more powerful magnets, larger windings, and higher precision components, contributing to the increase in cost.
3. Frame Size:
The physical size or frame size of a servo motor also plays a role in determining its cost. Servo motors come in various frame sizes, such as NEMA (National Electrical Manufacturers Association) standard sizes in North America. Larger frame sizes generally command higher prices due to the increased materials and manufacturing complexity required to build larger motors. Smaller frame sizes, on the other hand, may be more cost-effective but may have limitations in terms of torque and speed capabilities.
4. Feedback Mechanism:
The feedback mechanism used in a servo motor affects its cost. Servo motors typically employ encoders or resolvers to provide feedback on the rotor position. Higher-resolution encoders or more advanced feedback technologies can increase the cost of the motor. For example, servo motors with absolute encoders, which provide position information even after power loss, tend to be more expensive than those with incremental encoders.
5. Control Features and Technology:
The control features and technology incorporated into a servo motor can influence its cost. Advanced servo motors may offer features such as built-in controllers, fieldbus communication interfaces, advanced motion control algorithms, or integrated safety functions. These additional features contribute to the cost of the motor but can provide added value and convenience in certain applications. Standard servo motors with basic control functionality may be more cost-effective for simpler applications.
6. Brand and Reputation:
The brand and reputation of the servo motor manufacturer can impact its cost. Established and reputable brands often command higher prices due to factors such as quality assurance, reliability, technical support, and extensive product warranties. While motors from less-known or generic brands may be more affordable, they may not offer the same level of performance, reliability, or long-term support.
7. Customization and Application-Specific Requirements:
If a servo motor needs to meet specific customization or application-specific requirements, such as specialized mounting options, environmental sealing, or compliance with industry standards, the cost may increase. Customization often involves additional engineering, design, and manufacturing efforts, which can lead to higher prices compared to off-the-shelf servo motors.
It’s important to note that the cost of a servo motor is not the sole indicator of its quality or suitability for a particular application. It is essential to carefully evaluate the motor’s specifications, features, and performance characteristics in relation to the application requirements to make an informed decision.
In summary, the cost of servo motors varies based on factors such as power rating, torque and speed capabilities, frame size, feedback mechanism, control features and technology, brand reputation, and customization requirements. By considering these factors and comparing different options, it is possible to select a servo motor that strikes the right balance between performance and cost-effectiveness for a specific application.
How does the accuracy of a servo motor impact the precision of a system it operates in?
The accuracy of a servo motor has a significant impact on the precision of the system in which it operates. Here’s how the accuracy of a servo motor influences the precision of the system:
1. Positioning Control:
The accuracy of a servo motor directly affects the precision of positioning control in a system. A servo motor with high accuracy can accurately and consistently reach and maintain the desired position. This precision in positioning control is crucial in applications where precise movements, such as in robotics or manufacturing processes, are required. If the servo motor lacks accuracy, it may introduce position errors, leading to reduced precision in the system’s overall operation.
2. Repeatability:
Repeatability refers to the ability of a system to consistently achieve the same position or motion repeatedly. The accuracy of a servo motor plays a vital role in achieving high repeatability. A servo motor with high accuracy will consistently return to the same position when commanded to do so. This level of repeatability is essential in applications where consistent and precise movements are necessary, such as in assembly lines or pick-and-place operations. A lack of accuracy in the servo motor can result in variations in position from one cycle to another, reducing the overall precision of the system.
3. Error Compensation:
The accuracy of a servo motor is crucial for error compensation in a system. In many applications, external factors, such as variations in load or environmental conditions, can introduce errors in the system’s operation. An accurate servo motor can help compensate for these errors by precisely adjusting its position or motion based on feedback from sensors. This error compensation capability contributes to maintaining the precision of the system, as the servo motor can continuously adjust to minimize any deviations from the desired position or trajectory.
4. System Stability:
The accuracy of the servo motor also impacts the stability of the system. A servo motor with high accuracy can achieve stable movements and maintain control over the system’s dynamics. It can respond accurately to control signals, preventing overshoot, oscillations, or erratic behaviors that can degrade system precision. On the other hand, a servo motor with lower accuracy may introduce instability or erratic movements, compromising the overall precision of the system.
5. System Calibration and Calibration:
An accurate servo motor simplifies the calibration and fine-tuning process of a system. When a system requires calibration, an accurate servo motor provides a reliable reference point for adjustments. The precise and consistent movements of the servo motor make it easier to calibrate other components or subsystems in the system, ensuring that the entire system operates with the desired precision. If the servo motor lacks accuracy, it can be challenging to calibrate the system effectively, resulting in reduced precision in the system’s operation.
In summary, the accuracy of a servo motor has a direct impact on the precision of the system it operates in. An accurate servo motor enables precise positioning control, high repeatability, effective error compensation, system stability, and simplified calibration processes. These factors collectively contribute to achieving the desired precision in the system’s operation. Therefore, selecting a servo motor with the appropriate level of accuracy is crucial for ensuring the overall precision and performance of the system.
How does feedback control work in a servo motor system?
In a servo motor system, feedback control plays a crucial role in achieving precise control over the motor’s position, speed, and acceleration. The feedback control loop consists of several components that work together to continuously monitor and adjust the motor’s behavior based on the desired and actual position information. Here’s an overview of how feedback control works in a servo motor system:
1. Position Reference:
The servo motor system starts with a position reference or a desired position. This can be specified by a user or a control system, depending on the application requirements. The position reference represents the target position that the servo motor needs to reach and maintain.
2. Feedback Sensor:
A feedback sensor, such as an encoder or resolver, is attached to the servo motor’s shaft. The purpose of the feedback sensor is to continuously measure the motor’s actual position and provide feedback to the control system. The sensor generates signals that indicate the motor’s current position, allowing the control system to compare it with the desired position.
3. Control System:
The control system receives the position reference and the feedback signals from the sensor. It processes this information to determine the motor’s current position error, which is the difference between the desired position and the actual position. The control system calculates the required adjustments to minimize this position error and bring the motor closer to the desired position.
4. Controller:
The controller is a key component of the feedback control loop. It receives the position error from the control system and generates control signals that govern the motor’s behavior. The controller adjusts the motor’s inputs, such as voltage or current, based on the position error and control algorithm. The control algorithm can be implemented using various techniques, such as proportional-integral-derivative (PID) control, which adjusts the motor’s inputs based on the current error, the integral of past errors, and the rate of change of errors.
5. Motor Drive:
The control signals generated by the controller are sent to the motor drive unit, which amplifies and converts these signals into appropriate voltage or current levels. The motor drive unit provides the necessary power and control signals to the servo motor to initiate the desired motion. The drive unit adjusts the motor’s inputs based on the control signals to achieve the desired position, speed, and acceleration specified by the control system.
6. Motor Response:
As the motor receives the adjusted inputs from the motor drive, it starts to rotate and move towards the desired position. The motor’s response is continually monitored by the feedback sensor, which measures the actual position in real-time.
7. Feedback Comparison:
The feedback sensor compares the actual position with the desired position. If there is any deviation, the sensor generates feedback signals reflecting the discrepancy between the desired and actual positions. These signals are fed back to the control system, allowing it to recalculate the position error and generate updated control signals to further adjust the motor’s behavior.
This feedback loop continues to operate in a continuous cycle, with the control system adjusting the motor’s inputs based on the feedback information. As a result, the servo motor can accurately track and maintain the desired position, compensating for any disturbances or variations that may occur during operation.
In summary, feedback control in a servo motor system involves continuously comparing the desired position with the actual position using a feedback sensor. The control system processes this position error and generates control signals, which are converted and amplified by the motor drive unit to drive the motor. The motor’s response is monitored by the feedback sensor, and any discrepancies are fed back to the control system, enabling it to make further adjustments. This closed-loop control mechanism ensures precise positioning and accurate control of the servo motor.
editor by CX 2024-04-02