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Application
Papermaking, lifting machinery, elevators, CNC machine tool, precision injection molding, metallurgy, mining, electric power, petroleum and chemical industry, which highly require speed control for synchronous motor driving or asynchronous motor driving.
Features
1. Driving various motors
It supports vector control of AC asynchronous motors and synchronous motors, and supports vector control of permanent magnet synchronous motors without position feedback.
2. Excellent permanent magnet synchronous motor control performance
It drives permanent magnet synchronous motors smoothly and efficiently (including the PMSM without speed or rotor position sensors) to achieve higher energy efficiency;
Direct drive is possible on low-speed control industrial equipment, achieving higher energy efficiency and better control performance.
3. Optimized vector control technology, bringing breakthrough in motor control performance
SVC speed control ratio is increased to 1:1000; SVC replaces FVC when the output torque is greater than 10%; SVC winding and unwinding torque accuracy is ≤ 5%.
4. High-performance vector control, improving equipment accuracy
The maximum output frequency of 500Hz achieved with vector control enables high-precision speed output within 10 times the weak magnetic speed regulation range.
5. Large torque at low speeds, improving the low-speed control performance
In the closed-loop vector mode, the linearity deviation of the torque line is within 3%; the torque output is stable, the low-frequency torque is large, and stable loaded operation at ultra-low speed and 0.01Hz can be achieved. The torque mode and speed mode can be easily switched.
6. Instantaneous power loss without shutdown
In the event of a momentary power failure or sudden voltage drop, the VFD reduces the output speed and compensates for the voltage drop by feeding energy back through the load, so as to maintain the drive in operation for a short period of time.
7. Built-in adaptive PID function module
Two built-in PID parameter groups can be automatically switched according to deviations, DI terminals and frequency conditions. The given and feedback sources are various and practical. The PID feedback loss detection function facilitates user to perform fault diagnosis.
8. Extensive expansion function cards
With modular design concept, ES500A has superb expansion functions. Users are free to select different communication cards, PG cards and other expansion cards according to their needs, for example, ModBUS / CANopen / EtherCAT communication card, differential / rotary / open collector PG card.
9. Industry application macro function
Designed for the special requirements for performance functions in industry applications, such as winding machines, winches, cranes, extruders and presses, the industry application macro function realizes the one-key initialization function, reducing the workload and technical requirements of the front-line debugging personnel.
10. Powerful upper computer monitoring software
Extensive background monitoring functions which facilitate on-site data collection and debugging; online oscilloscope function; batch uploading and downloading parameters; displaying Group U0 parameters in real time; and monitoring and diagnosis functions.
Application
Papermaking, lifting machinery, elevators, CNC machine tool, precision injection molding, metallurgy, mining, electric power, petroleum and chemical industry, which highly require speed control for synchronous motor driving or asynchronous motor driving.
Features
1. Driving various motors
It supports vector control of AC asynchronous motors and synchronous motors, and supports vector control of permanent magnet synchronous motors without position feedback.
2. Excellent permanent magnet synchronous motor control performance
It drives permanent magnet synchronous motors smoothly and efficiently (including the PMSM without speed or rotor position sensors) to achieve higher energy efficiency;
Direct drive is possible on low-speed control industrial equipment, achieving higher energy efficiency and better control performance.
3. Optimized vector control technology, bringing breakthrough in motor control performance
SVC speed control ratio is increased to 1:1000; SVC replaces FVC when the output torque is greater than 10%; SVC winding and unwinding torque accuracy is ≤ 5%.
4. High-performance vector control, improving equipment accuracy
The maximum output frequency of 500Hz achieved with vector control enables high-precision speed output within 10 times the weak magnetic speed regulation range.
5. Large torque at low speeds, improving the low-speed control performance
In the closed-loop vector mode, the linearity deviation of the torque line is within 3%; the torque output is stable, the low-frequency torque is large, and stable loaded operation at ultra-low speed and 0.01Hz can be achieved. The torque mode and speed mode can be easily switched.
6. Instantaneous power loss without shutdown
In the event of a momentary power failure or sudden voltage drop, the VFD reduces the output speed and compensates for the voltage drop by feeding energy back through the load, so as to maintain the drive in operation for a short period of time.
7. Built-in adaptive PID function module
Two built-in PID parameter groups can be automatically switched according to deviations, DI terminals and frequency conditions. The given and feedback sources are various and practical. The PID feedback loss detection function facilitates user to perform fault diagnosis.
8. Extensive expansion function cards
With modular design concept, ES500A has superb expansion functions. Users are free to select different communication cards, PG cards and other expansion cards according to their needs, for example, ModBUS / CANopen / EtherCAT communication card, differential / rotary / open collector PG card.
9. Industry application macro function
Designed for the special requirements for performance functions in industry applications, such as winding machines, winches, cranes, extruders and presses, the industry application macro function realizes the one-key initialization function, reducing the workload and technical requirements of the front-line debugging personnel.
10. Powerful upper computer monitoring software
Extensive background monitoring functions which facilitate on-site data collection and debugging; online oscilloscope function; batch uploading and downloading parameters; displaying Group U0 parameters in real time; and monitoring and diagnosis functions.
Technical Item | Specification | |
Basic function | Output frequency | Vector control: 0~500Hz V/f control: 0~3200Hz |
Control mode | V/f control Sensorless vector control (SVC) Close-loop vector control (FVC) | |
Carrier frequency | 0.8kHz~12kHz, automatically adjusted based on the load characteristics | |
Input frequency resolution | Digital setting: 0.01Hz Analog setting: maximum frequency * 0.025% | |
Starting torque | G type: 0.5Hz/150% P type: 0.5Hz/100% | |
Speed adjustment range | 1:100 (SVC), 1:1000 (FVC) | |
Speed stability accuracy | ±0.5% (SVC), ±0.02% (FVC) | |
Torque control response & precision | Response time: 5ms, precision: ±5% (FVC) | |
Overload capacity | G type: 150% 60s; 180% 3s P type: 120% 60s; 150% 3s | |
Torque boost | Automatic torque boost; manual torque boost 0.1%~30.0% | |
V/f curve | Three types: linear, multiple point and square type (1.2 power, 1.4 power, 1.6 power, 1.8 power, square) | |
V/f separation | 2 modes: complete separation, half separation | |
Acceleration/ deceleration mode | Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.1s~6500.0s | |
DC braking | DC braking frequency: 0.00Hz~maximum frequency Braking time: 0.0s~36.0s Braking action current value: 0.0%~100.0% | |
Jog control | Jog frequency range: 0.00Hz~50.00Hz Jog acceleration/deceleration time: 0.0s~6500.0s | |
Simple PLC & multi-step speed operation | It can realize up to 16 steps speed via the built-in PLC function or control terminal. | |
Built-in PID | Built-in PID control to easily realize the close loop control of the process parameters (such as pressure, temperature, flow, etc.) | |
Automatic voltage Regulation (AVR) | Automatically maintain a constant output voltage when grid voltage changes | |
Common DC bus | Common DC bus for several inverters, energy balanced automatically | |
Overvoltage & overcurrent stall control | Automatically limit the current and voltage during the operation, prevent frequent overcurrent and overvoltage trip | |
Rapid current limit | Minimizing overcurrent fault, protect the normal operation of inverter | |
Torque limit & control | "Excavator" characteristics, automatically limit the torque during the operation, prevent frequent overcurrent trip; torque control can be achieved on close-loop vector control mode. | |
Fault protection function | Overcurrent, overvoltage, under-voltage, overheating, default phase, overload, short-circuit, etc., can record the detailed running status during failure & has fault automatic reset function | |
Individualizd function
| High performance | Can control the asynchronous motor and synchronous motor based on the high-performance current vector control technology. |
Non-stop when instantaneous power off | The load feedback energy compensates the voltage reduction when instantaneous power off, so that the AC drive can continue to run for a short time. | |
Virtual IO | Five groups of virtual DI/DO can realize simple logic control. | |
Timing control | Time range: 0.0min~6500.0min | |
Multi-motor switching | 2 groups of motor parameters, arbitrary switching between 2 motors | |
Communication protocol | Standard MODBUS (RS-485) and optional CANopen communication | |
Multiple encoder support | It supports various encoders such as differential encoder, open-collector encoder and also support rotary transformer. | |
Operation | Running command source | Keypad control Terminal control Serial communication control |
Frequency source | Digital setting, analog setting, pulse frequency setting, serial communication setting, multi-step speed setting & simple PLC, PID setting, etc. These frequency settings can be combined & switched in various modes. | |
Auxiliary frequency source | There are ten auxiliary frequency sources. It can implement fine tuning and frequency synthesis. | |
Input terminal | 7 digital input (DI1~DI7), DI7 supports max. 100 kHz high-speed pulse input. 3 analog input: AI1 & AI2: 0~10V AI3: 0~10V or 4~20mA | |
Output terminal | 1 output (FM), optional for open collector output or high-speed pulse output (0~100kHz) 2 relay output 2 analog output: AO1: 0~10V or 0/4~20mA AO2: 0~10V | |
Environment | Altitude | Less than 1000m; rises each 1000m, derates 10% to use |
Ambient temperature | -10℃~+40℃ (if 40℃~50℃, please derate to use) | |
Humidity | Less than 95%RH, no water condenses | |
Storage temperature | -20℃~+60℃ |
Technical Item | Specification | |
Basic function | Output frequency | Vector control: 0~500Hz V/f control: 0~3200Hz |
Control mode | V/f control Sensorless vector control (SVC) Close-loop vector control (FVC) | |
Carrier frequency | 0.8kHz~12kHz, automatically adjusted based on the load characteristics | |
Input frequency resolution | Digital setting: 0.01Hz Analog setting: maximum frequency * 0.025% | |
Starting torque | G type: 0.5Hz/150% P type: 0.5Hz/100% | |
Speed adjustment range | 1:100 (SVC), 1:1000 (FVC) | |
Speed stability accuracy | ±0.5% (SVC), ±0.02% (FVC) | |
Torque control response & precision | Response time: 5ms, precision: ±5% (FVC) | |
Overload capacity | G type: 150% 60s; 180% 3s P type: 120% 60s; 150% 3s | |
Torque boost | Automatic torque boost; manual torque boost 0.1%~30.0% | |
V/f curve | Three types: linear, multiple point and square type (1.2 power, 1.4 power, 1.6 power, 1.8 power, square) | |
V/f separation | 2 modes: complete separation, half separation | |
Acceleration/ deceleration mode | Straight line/S curve; four kinds of acceleration/deceleration time, range: 0.1s~6500.0s | |
DC braking | DC braking frequency: 0.00Hz~maximum frequency Braking time: 0.0s~36.0s Braking action current value: 0.0%~100.0% | |
Jog control | Jog frequency range: 0.00Hz~50.00Hz Jog acceleration/deceleration time: 0.0s~6500.0s | |
Simple PLC & multi-step speed operation | It can realize up to 16 steps speed via the built-in PLC function or control terminal. | |
Built-in PID | Built-in PID control to easily realize the close loop control of the process parameters (such as pressure, temperature, flow, etc.) | |
Automatic voltage Regulation (AVR) | Automatically maintain a constant output voltage when grid voltage changes | |
Common DC bus | Common DC bus for several inverters, energy balanced automatically | |
Overvoltage & overcurrent stall control | Automatically limit the current and voltage during the operation, prevent frequent overcurrent and overvoltage trip | |
Rapid current limit | Minimizing overcurrent fault, protect the normal operation of inverter | |
Torque limit & control | "Excavator" characteristics, automatically limit the torque during the operation, prevent frequent overcurrent trip; torque control can be achieved on close-loop vector control mode. | |
Fault protection function | Overcurrent, overvoltage, under-voltage, overheating, default phase, overload, short-circuit, etc., can record the detailed running status during failure & has fault automatic reset function | |
Individualizd function
| High performance | Can control the asynchronous motor and synchronous motor based on the high-performance current vector control technology. |
Non-stop when instantaneous power off | The load feedback energy compensates the voltage reduction when instantaneous power off, so that the AC drive can continue to run for a short time. | |
Virtual IO | Five groups of virtual DI/DO can realize simple logic control. | |
Timing control | Time range: 0.0min~6500.0min | |
Multi-motor switching | 2 groups of motor parameters, arbitrary switching between 2 motors | |
Communication protocol | Standard MODBUS (RS-485) and optional CANopen communication | |
Multiple encoder support | It supports various encoders such as differential encoder, open-collector encoder and also support rotary transformer. | |
Operation | Running command source | Keypad control Terminal control Serial communication control |
Frequency source | Digital setting, analog setting, pulse frequency setting, serial communication setting, multi-step speed setting & simple PLC, PID setting, etc. These frequency settings can be combined & switched in various modes. | |
Auxiliary frequency source | There are ten auxiliary frequency sources. It can implement fine tuning and frequency synthesis. | |
Input terminal | 7 digital input (DI1~DI7), DI7 supports max. 100 kHz high-speed pulse input. 3 analog input: AI1 & AI2: 0~10V AI3: 0~10V or 4~20mA | |
Output terminal | 1 output (FM), optional for open collector output or high-speed pulse output (0~100kHz) 2 relay output 2 analog output: AO1: 0~10V or 0/4~20mA AO2: 0~10V | |
Environment | Altitude | Less than 1000m; rises each 1000m, derates 10% to use |
Ambient temperature | -10℃~+40℃ (if 40℃~50℃, please derate to use) | |
Humidity | Less than 95%RH, no water condenses | |
Storage temperature | -20℃~+60℃ |
Multi-pump constant pressure water supply
VFD constant-pressure water supply scheme
Frequency converter constant-pressure water supply scheme is an effective control scheme to realize constant water pressure in water supply system. Through the speed regulation and pressure control function of frequency converter, the energy saving and energy saving of water supply system, accurate control of water pressure and reduction of pump start and stop times can be realized. During the implementation process, attention shall be paid to the system design, frequency converter selection, installation, commissioning and regular maintenance to ensure the effective implementation of the scheme and stable operation of the system.
Features and Advantages
The VFD constant-pressure water supply scheme has the following characteristics and advantages compared with the traditional water supply system
Energy-saving and energy conservation: control the rotating speed of water pump through VFD, reduce the operation time and power consumption of water pump, and reduce energy consumption and operation cost
Precise control of water supply pressure: the constant pressure control method can accurately control the water pressure of the water supply system to avoid damage to the water supply system and equipment caused by too high or too low water pressure
Reduce the start and stop times of water pump: adjust the speed of water pump through VFD to make the water pump operate stably, reduce the start and stop frequency and extend the service life of water pump
Automatic regulation: when the water pressure of the water supply system changes, the VFD can timely sense and adjust the operating state of the water pump to maintain a constant water pressure
Real-time monitoring: the VFD can monitor the operation status of the water supply system in real time, and provide the water supply system through the display screen or the remote monitoring system
Application Cases
Drip irrigation is a special irrigation method in Xinjiang. Xinjiang has a long sunshine time and dry air, so both food and cash crops cannot be irrigated without irrigation. However, based on the huge water consumption of flood irrigation, the wise people invented drip irrigation, which can ensure the water supply for crops and save a lot of water.
Drip irrigation frequency conversion all-in-one machine is the ideal equipment for driving water pump, with the following characteristics:
Constant pressure water supply and energy conservation.
Eliminates water hammer effects during pump startup and shutdown and prolongs pump life.
Improve the automation degree of irrigation control, achieve high monitoring accuracy, unattended and other characteristics.
Improve the reliability of the system. The VFD has automatic protection functions for overload, over-voltage, over-current, under-voltage and phase loss
Normal operation in wide voltage range (300-460V).
Small size, easy to use, saving labor cost for users.
Normal operation under outdoor exposure and high temperature.
Meet the environmental factors such as large external dust to ensure the normal operation of frequency converter.
Multi-pump constant pressure water supply
VFD constant-pressure water supply scheme
Frequency converter constant-pressure water supply scheme is an effective control scheme to realize constant water pressure in water supply system. Through the speed regulation and pressure control function of frequency converter, the energy saving and energy saving of water supply system, accurate control of water pressure and reduction of pump start and stop times can be realized. During the implementation process, attention shall be paid to the system design, frequency converter selection, installation, commissioning and regular maintenance to ensure the effective implementation of the scheme and stable operation of the system.
Features and Advantages
The VFD constant-pressure water supply scheme has the following characteristics and advantages compared with the traditional water supply system
Energy-saving and energy conservation: control the rotating speed of water pump through VFD, reduce the operation time and power consumption of water pump, and reduce energy consumption and operation cost
Precise control of water supply pressure: the constant pressure control method can accurately control the water pressure of the water supply system to avoid damage to the water supply system and equipment caused by too high or too low water pressure
Reduce the start and stop times of water pump: adjust the speed of water pump through VFD to make the water pump operate stably, reduce the start and stop frequency and extend the service life of water pump
Automatic regulation: when the water pressure of the water supply system changes, the VFD can timely sense and adjust the operating state of the water pump to maintain a constant water pressure
Real-time monitoring: the VFD can monitor the operation status of the water supply system in real time, and provide the water supply system through the display screen or the remote monitoring system
Application Cases
Drip irrigation is a special irrigation method in Xinjiang. Xinjiang has a long sunshine time and dry air, so both food and cash crops cannot be irrigated without irrigation. However, based on the huge water consumption of flood irrigation, the wise people invented drip irrigation, which can ensure the water supply for crops and save a lot of water.
Drip irrigation frequency conversion all-in-one machine is the ideal equipment for driving water pump, with the following characteristics:
Constant pressure water supply and energy conservation.
Eliminates water hammer effects during pump startup and shutdown and prolongs pump life.
Improve the automation degree of irrigation control, achieve high monitoring accuracy, unattended and other characteristics.
Improve the reliability of the system. The VFD has automatic protection functions for overload, over-voltage, over-current, under-voltage and phase loss
Normal operation in wide voltage range (300-460V).
Small size, easy to use, saving labor cost for users.
Normal operation under outdoor exposure and high temperature.
Meet the environmental factors such as large external dust to ensure the normal operation of frequency converter.