LG-iG5变频器使用手册：技术规格与功能指南
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更新于2024-07-20
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"LG-iG5型变频器是一款由LG公司生产的自动化设备，适用于0.37至4.0kW（0.5至5.4HP）的1相和3相电源，电压范围为200-230VAC和380-460VAC。这款变频器采用PWM技术与IGBT（绝缘栅双极晶体管）相结合，提供变频驱动功能。其控制方法基于伏特/赫兹配合空间矢量技术，具备内置RS-485通讯、ModBus-RTU协议和PID控制。此外，LG-iG5变频器还配备了可拆卸的键盘，允许用户读取和写入参数。"
详细说明：
1. **功率和电压等级**：LG-iG5变频器覆盖了0.37至4.0kW的功率范围，对应于0.5至5.4HP，支持1相200-230VAC和3相380-460VAC的电压输入。这使得该设备能适应不同规模的电动机控制需求。
2. **防护等级**：提供IP00到IP20的外壳保护等级，确保在不同环境下的安全运行。
3. **变频技术**：采用PWM（脉宽调制）技术和IGBT，能有效调节电机速度，同时保持高效能源转换。
4. **控制策略**：通过伏特/赫兹（V/F）控制与空间矢量技术，确保电机运行稳定，提高能效。
5. **通讯功能**：内置RS-485接口和ModBus-RTU协议，便于与其他设备进行通讯和集成自动化系统。
6. **PID控制**：内置PID控制器，可以自动调整电机输出，以达到精确的系统响应和控制。
7. **可拆卸键盘**：用户可以方便地读取和写入参数，提高了设备的灵活性和调试便捷性。
8. **性能特性**：具备150%的低频扭矩，确保在0.5Hz时仍能保持强大力矩输出。同时，它有8个预设速度，3个跳跃频率，3个多功能输入和1个多功能输出。
9. **模拟输出**：提供0~12V的模拟输出，用于控制或监测系统状态。
10. **信号兼容性**：支持PNP和NPN双向信号，兼容各种传感器和执行器。
11. **速度搜索功能**：能够自动搜索并设定最佳运行速度。
12. **载波频率**：支持1到10kHz的载波频率，减少电机噪声和电磁干扰。
13. **内置制动晶体管**：内置的制动晶体管确保快速、有效的电机停止，提高系统的安全性。
14. **手动/自动扭矩提升**：用户可以根据需要选择手动或自动模式来提升电机扭矩。
15. **远程键盘电缆**：配备标准的远程键盘操作电缆，方便在远离变频器的位置进行控制。
以上是LG-iG5变频器的主要特点和功能，涵盖了从基本的电气规格到高级控制和通信特性，是工业自动化领域的一款重要设备。
Optimum acceleration and deceleration
Reduced size
Enhancing its performance the iG5 shows much smaller size
compares to the previous model, the iG series.
Maximum 50% of total volume has been reduced in iG5 in order to
mount it easily on smaller control panel and DIN rail with less weight.
It allows more cost effective panel construction and system design.
Built-in PID control
It is valuable in process control. The built-in PID controller controls flow, temperature, pressure, etc.
through the proportional, integral and differential calculus between the feedback value and reference
value in closed loop.
Built-in communication interface and PC monitoring software
The iG5 has built-in the most popular communication interfaces such as Modbus-RTU and RS232/485.
The iG5 has the small inverter features and standard medium drive features together.
The "Driveview
TM
" software offers Window
®
based computer monitoring tool through RS485 interface with
graphic capture, keypad emulator, parameter edit and text monitor. It is applicable for all LG inverters.
ModBus-RTU
TM
RS - 485
Space vector PWM technology
The Space vector technology is being adopted in all LG drives. It features outstanding performance in its
control characteristics. It has low total harmonic distortion, low current ripple, low torque ripple, low motor
temperature rise, and better voltage utilization. It is a basic control platform of the iG5 drive. The advantages of
Space vector PWM technology are being proved in many applications.
To achieve a maximum torque during the acceleration and deceleration, "trip free" function is activated.
The 32-bit DSP CPU monitors the current transition during the acceleration and deceleration to program an
optimum curve that is under the trip-triggering level.
Better Efficiency (Low Iron Loss in Motor)
Low Motor Heat (Extended Motor)
High Voltage Utilization (15.9%)
Stable & Smooth Operation
High and Stable Torque
Low Total
Harmonic Distortion
Low Torque Ripple Low Current Ripple
Stopped
CH1=2V
DC 10:1
CH3=5V
DC 10:1
CH4=2V
DC 10:1
1s/div
[1s/div]
NORM:1kS/s
=Trigger=
Mode : AUTO
Type : EDGE CH1
Delay : 0.0ns
Hold Off : MINIMUM
=Record Length=
Main : 10k
Zoom : 500
=Filter=
Smoothing : OFF
BW : FULL
=Offset=
Ch1 : 0.00V
Ch2 : 0.00V
CH3 : 0.00V
CH4 : 0.00V
=Trigger=
Mode : AUTO
Type : EDGE CH1
Delay : 0.0ns
Hold Off : MINIMUM
=Record Length=
Main : 10k
Zoom : 500
=Filter=
Smoothing : OFF
BW : FULL
=Offset=
Ch1 : 0.00V
Ch2 : 0.00V
CH3 : 0.00V
CH4 : 0.00V
3
Stopped
CH1=2V
DC 10:1
CH3=5V
DC 10:1
CH4=2V
DC 10:1
1s/div
[1s/div]
NORM:1kS/s
3
Traditional curve Optimum curve
Trip
PNP and NPN switchable duals signals
The iG5 has both PNP and NPN signals in order to controlled by PLC or outside controller.
Regardless the type of PLC or type of control signal, iG5 can work with positive 24Vdc and negative 24Vdc.
Inverter rating selection guide
Inverter type nomenclature
LG Starvert drive
004
008
015
.
220
0.37kW
0.75kW
1.5kW
.
22kW
iG5
iS5
iH
iV5
iG5 series
iS5 series
iH series*
iV5 series
1 phase 200~230V
3 phase 200~230V
3 phase 380~460V
-1
-2
-4
SV 008 iG5 -4
Starvert iG5 Features & Selection Guide
* iH drive has a different designation in kW.
0403
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