Product Description
SINEE OEM manufacturer EM730 AC Drive speed variator
Product Description
Single-phase/three-phase 220V-240V 0.4kW-2.2kW
Three-phase AC 340V-460V 0.75kW-450kW
The EM730 series inverter is a high-reliability general-purpose inverter launched by SINEE. EM730 supports three-phase AC asynchronous motors and permanent magnet synchronous motors. They support a variety of drive control technologies, such as the vector VF (VVF) control and speed sensorless vector control (SVC); speed output and torque output; and Wi-Fi access and background
Features of the EM730 series inverter:
1.Support the mobile APP and Wi-Fi module to facilitate inverter debugging and monitoring
2.Reliable operation with full load at 50°C ambient temperature
3.Integration of special functions for rewinding and unwinding
4.Support the high-frequency output up to 3000Hz for driving high-speed motors
5.Support the 100kHz high-speed pulse input
6.Metal substrate should adapt to the vibratory environment to reduce the induced voltage of the motor.
7.Built-in filter is close to Level C3.
Product Parameters
| Item | Specification | |
| Power supply | Rated voltage of power supply | Three-phase 340V-10% to 460V+10%,Single-phase/three-phase 200V-10% to 240V+10%;50-60Hz ± 5%; voltage unbalance rate: <3% |
| Output | Maximum output voltage | The maximum output voltage is the same as the input power voltage. |
| Rated output current | Continuous output of 100% rated current | |
| Maximum overload current | 150% of heavy-duty rated current for 60s (185kW-450kW: 140% of heavy-duty rated current for 60s) 120% of light-duty rated current for 60s |
|
| Basic control | Driving mode | V/F control (VVF); speed sensorless vector control (SVC) |
| Input mode | Frequency (speed) input, torque input | |
| Start and stop control mode | Keyboard, control terminal (two-line control and three-line control), communication | |
| Frequency control range | 0.00~600.00Hz/0.0~3000.0HZ | |
| Input frequency resolution | Digital input: 0.01Hz/0.1Hz Analog input: 0.1% of maximum frequency |
|
| Speed control range | 1:50(VVF),1:200(SVC) | |
| Speed control accuracy | Rated synchronous speed ± 0.2% | |
| Acceleration and deceleration time | 0.01 s to 600.00 s / 0.1 s to 6,000.0 s / 1 s to 60,000 s | |
| Voltage/frequency characteristics | Rated output voltage: 20% to 100%, adjustable Fundamental frequency 1Hz to 600Hz/3000Hz, adjustable |
|
| Torque boost | Fixed torque boost curve Any V/F curve is acceptable. |
|
| Starting torque | 150%/1Hz(VVF) 150%/0.25Hz(SVC) |
|
| Precision torque control | ±5% rated torque (SVC) | |
| Self-adjustment of output voltage | When the input voltage changes, the output voltage will basically remain unchanged. | |
| Automatic current limit | Output current is automatically limited to avoid frequent overcurrent trips. | |
| DC braking | Braking frequency: 0.01 to maximum frequency Braking time: 0~30S Braking current: 0% to 100% of rated current |
|
| Signal input source | Communication, multi-speed, analog, etc. | |
| Input and output | Reference power supply | 10V/20mA |
| Terminal control power | 24V/100mA | |
| Digital input terminal | 5-channel digital multi-function input: X1 to X5 X5 can be used as the high-speed pulse input (max. 100kHZ). |
|
| Analog input terminal | 2-channel analog inputs: One (AI1) voltage source: -10 to 10V input; One channel (AI2): 0 to 10V input voltage or 0 to 20mA input current optional; |
|
| Digital output terminal | Multi-function output of 1 open collector and 1 relay Maximum output current of the collector: 50mA; Relay contact capacity: 250VAC/3A or 30VDC/1A, EA-EC: normally open; EB-EC: normally closed |
|
| Analog output terminal | One multi-function analog terminal output M1: 0-10V/0-20mA multi-function analog output terminal |
|
| Operation panel | LED display | The LED digital tube displays relevant information about the inverter. |
| Protection | Protective Function | Short circuit, overcurrent, overvoltage, undervoltage, phase loss, overload, overheat, load loss, external fault, etc. |
| Use conditions | Location | Indoor, at an altitude of less than 1 km, free of dust, corrosive gases and direct sunlight. When the altitude is higher than 1km, it is derated by 1% per 100m. The maximum allowable altitude is 3km. |
| Applicable environment | -10ºC to +60ºC, 5% to 95% RH (non-condensing). When the ambient temperature exceeds 50°C, it needs to be derated by 3% per 1°C temperature rise. The maximum allowable ambient temperature is 60°C. |
|
| Vibration | Less than 0.5g | |
| Storage environment | -40ºC~+70ºC | |
| Installation method | Wall-mounted or installed in the cabinet | |
| Protection level | Protection level | Standard IP20/IP21 (with plastic baffle) |
| Cooling method | Cooling method | Forced air cooling |
Installation Instructions
Company Profile
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| Application: | Three Phase Transducer, General Transducer, Single-phase Transducer |
|---|---|
| Output Type: | Triple |
| Principle of Work: | Vector Control Transducer |
| Switch Mode: | PWM Control |
| Main Circuit Type: | Voltage |
| Voltage of Power Supply: | Low Voltage Variable-Frequency Drive |
| Customization: |
Available
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What role do variators play in enhancing fuel efficiency in vehicles and machinery?
Variators, particularly those used in vehicles and machinery equipped with continuously variable transmissions (CVTs), play a crucial role in enhancing fuel efficiency. By optimizing the power delivery and enabling the engine to operate more efficiently, variators contribute to reducing fuel consumption and improving overall energy efficiency. Here’s a detailed explanation of the role variators play in enhancing fuel efficiency:
1. Continuous Adjustment of Gear Ratio:
Variators in CVTs allow for the continuous adjustment of the gear ratio within their operating range. This means that the engine can operate at the most efficient speed for a given driving condition. By continuously optimizing the gear ratio based on the vehicle’s speed and load, variators enable the engine to stay within its optimal power band, where fuel efficiency is highest. This continuous adjustment ensures that the engine operates at the most efficient RPM (revolutions per minute) for a given speed, resulting in improved fuel efficiency.
2. Elimination of Inefficient Gear Shifts:
Traditional transmissions with discrete gear ratios require frequent gear shifts during acceleration or deceleration. These gear shifts can lead to inefficient engine operation and increased fuel consumption. In contrast, variators in CVTs eliminate the need for gear shifts altogether. The smooth and continuous adjustment of the gear ratio provided by variators ensures that the engine can maintain a consistent and optimal speed, even during changes in vehicle speed. This elimination of inefficient gear shifts helps to improve fuel efficiency by maintaining the engine within its efficient operating range.
3. Precise Engine Control:
Variators enable precise control of the engine speed, allowing for finer adjustments to match the desired vehicle speed. This precise engine control ensures that the engine operates within its most efficient range. Variators continuously optimize the gear ratio based on factors such as throttle input and vehicle speed, ensuring that the engine operates at the optimal RPM for the given driving conditions. By fine-tuning the engine speed, variators help to minimize unnecessary fuel consumption and maximize fuel efficiency.
4. Adaptive Power Delivery:
Modern variators in CVTs often feature advanced control systems that adapt the power delivery to match the driver’s demands and the road conditions. These control systems monitor various parameters, such as throttle input, vehicle speed, and engine load, and adjust the gear ratio accordingly. This adaptive power delivery ensures that the engine operates efficiently in real-time, optimizing fuel consumption. By adjusting the gear ratio based on the specific driving conditions, variators contribute to improved fuel efficiency by delivering the right amount of power for the desired performance.
5. Optimal Use of Engine Torque:
Variators facilitate optimal use of the engine’s torque characteristics. They can be designed to provide a wide range of gear ratios, allowing the engine to operate at the most efficient torque levels for a given speed. By utilizing the available engine torque effectively, variators help to reduce the strain on the engine and improve fuel efficiency. This optimal use of engine torque ensures that the engine doesn’t have to work harder than necessary, resulting in reduced fuel consumption.
6. Energy Recovery and Regeneration:
Some variators in hybrid vehicles or machinery configurations are designed to incorporate energy recovery and regeneration mechanisms. These systems capture and store energy that would otherwise be wasted during deceleration or braking. By converting the kinetic energy into electrical energy and storing it in a battery or capacitor, the energy can be reused to power the vehicle or machinery during acceleration. This energy recovery and regeneration feature helps to improve overall energy efficiency and reduce fuel consumption.
In summary, variators, especially in vehicles and machinery equipped with CVTs, play a crucial role in enhancing fuel efficiency. They achieve this by providing continuous adjustment of the gear ratio, eliminating inefficient gear shifts, enabling precise engine control, facilitating adaptive power delivery, optimizing the use of engine torque, and incorporating energy recovery and regeneration systems. By optimizing power delivery and engine operation, variators contribute to reduced fuel consumption, lower emissions, and improved overall energy efficiency in vehicles and machinery.
What is the impact of variators on the lifespan of mechanical components in a system?
The impact of variators on the lifespan of mechanical components in a system is a crucial consideration. Variators, such as continuously variable transmissions (CVTs), can have both positive and negative effects on the longevity of mechanical components. Here’s a detailed explanation of the impact of variators on the lifespan of mechanical components:
1. Reduced Wear and Tear:
Variators can contribute to reduced wear and tear on mechanical components compared to traditional transmissions with fixed gear steps. The continuously variable nature of variators allows for smoother and seamless gear ratio changes, eliminating the shock and stress associated with gear shifts in conventional transmissions. This smoother operation can reduce the strain on various components like gears, synchronizers, and clutch packs, potentially extending their lifespan.
2. Improved Power Delivery:
Variators optimize power delivery by continuously adjusting the gear ratios to keep the engine in its most efficient operating range. By operating the engine within its optimal powerband, variators can reduce the load and stress on mechanical components. When the engine operates more efficiently, it can lead to reduced wear on components like pistons, connecting rods, and crankshafts, potentially increasing their lifespan.
3. Enhanced Cooling and Lubrication:
Variators often incorporate advanced cooling and lubrication systems to maintain optimal operating conditions. These systems help manage heat generated during operation and ensure proper lubrication of critical components. Effective cooling and lubrication can prevent excessive heat buildup, reduce friction, and minimize wear on bearings, shafts, and other moving parts. By providing better cooling and lubrication, variators can help extend the lifespan of these mechanical components.
4. Increased Complexity and Component Interdependence:
Variators, especially electronic or computer-controlled ones, can introduce increased complexity and component interdependence within the system. The integration of electronic control systems, sensors, and actuators adds additional components that can potentially fail or require maintenance. The interdependence of these components means that a failure in one part can affect the overall performance and lifespan of the variator and other mechanical components. Proper maintenance, regular inspections, and timely repairs are crucial to mitigate potential issues and ensure the longevity of the system.
5. Maintenance and Service Requirements:
Variators may have specific maintenance and service requirements to ensure their optimal performance and longevity. Regular fluid changes, inspections, and adjustments may be necessary to keep the variator and associated mechanical components in good working condition. Adhering to the manufacturer’s recommended maintenance schedule is important to prevent premature wear and failure of components. Neglecting maintenance can lead to accelerated wear, reduced lifespan, and potential costly repairs.
6. Quality of Design and Manufacturing:
The overall lifespan of mechanical components in a variator system can be influenced by the quality of design and manufacturing. Variators and their associated components should be designed and manufactured to meet specific performance and durability standards. High-quality materials, precise engineering, and stringent quality control can contribute to the longevity of mechanical components. Variators from reputable manufacturers with a track record of reliability and performance are more likely to have a positive impact on the lifespan of mechanical components.
7. Driving Habits and Operating Conditions:
The impact of variators on the lifespan of mechanical components can also be influenced by driving habits and operating conditions. Aggressive driving, excessive loading, and operating the vehicle in extreme conditions can put additional stress on the variator and associated components. Continuous high RPM operation, abrupt throttle inputs, or towing heavy loads can accelerate wear and potentially shorten the lifespan of mechanical components. Operating the vehicle within recommended limits and practicing responsible driving habits can help preserve the longevity of the system.
In conclusion, variators can have both positive and negative impacts on the lifespan of mechanical components in a system. The continuously variable nature of variators can reduce wear and tear, improve power delivery, and enhance cooling and lubrication. However, increased complexity, maintenance requirements, and the quality of design and manufacturing are factors to consider. Additionally, driving habits and operating conditions play a significant role in determining the lifespan of mechanical components. Regular maintenance, proper care, and responsible driving practices are essential to ensure the longevity of the variator system and its associated mechanical components.
Can you explain the role of a variator in continuously variable transmissions (CVTs)?
In continuously variable transmissions (CVTs), a variator plays a crucial role in providing seamless and continuous variation of the gear ratios. It is the key component that enables CVTs to offer a wide range of gear ratios without discrete gears. Here’s a detailed explanation of the role of a variator in CVTs:
A CVT is a type of transmission that can vary the gear ratio continuously within a specific range, rather than having a fixed set of gears like traditional automatic or manual transmissions. The variator in a CVT is responsible for adjusting the gear ratio based on the driving conditions and driver inputs.
The variator in a CVT typically consists of two variable-diameter pulleys connected by a belt or chain. Each pulley has a pair of adjustable sheaves that can change their effective diameter. The belt or chain runs between the two pulleys, and its position on the sheaves determines the gear ratio.
When the driver accelerates or decelerates, the variator adjusts the effective diameter of the pulleys to change the position of the belt on the sheaves. This, in turn, alters the gear ratio between the input and output shafts of the transmission. By continuously adjusting the effective diameter of the pulleys, the variator allows the CVT to provide an infinite number of gear ratios within its range.
During acceleration, the variator increases the effective diameter of the driving pulley and decreases the effective diameter of the driven pulley. This causes the belt to ride higher on the driving pulley and lower on the driven pulley, resulting in a higher gear ratio. As a result, the engine can operate at higher RPMs while the vehicle accelerates smoothly.
Conversely, during deceleration or cruising, the variator adjusts the effective diameters to lower the gear ratio. This allows the engine to operate at lower RPMs, improving fuel efficiency and reducing noise levels.
The variator continuously monitors the driving conditions and adjusts the gear ratio accordingly to provide optimal performance, whether it’s for smooth acceleration, efficient cruising, or maintaining a constant speed. The adjustments are typically controlled by a computer, which takes into account factors such as throttle position, vehicle speed, engine load, and driver inputs.
In summary, the variator in a CVT is responsible for continuously varying the gear ratio by adjusting the effective diameter of the pulleys. It allows the CVT to offer a wide range of gear ratios without discrete gears, providing smooth acceleration, improved fuel efficiency, and optimized performance in various driving conditions.
editor by CX 2024-03-01