High-performance Frequency Inverter for Water Pump LSD-H7000

High-performance Frequency Inverter for Water Pump LSD-H7000

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Product Introduction

LSD-H7000 series frequency inverter is a special water pump inverter, mainly used in equipment occasions that require automatic constant pressure function (such as fans, pumps, etc.). After the related equipment is equipped with this series of inverters and the required pressure is set. If the pressure exceeds the set value, the inverter will start to decelerate. When the pressure is constant within the set range, the inverter will control the air compressor or water pump motor to automatically adjust the speed. The equipment used can achieve the best energy-saving effect under the condition of basically unchanged pressure. If it runs at the set pressure value for a long time, it will automatically stop, and automatically start when the pressure is lower than the set lower limit threshold, which simplifies human operation to the greatest extent and saves worry and effort.

Model table
Product installation size
Technical Parameters
Model table
Voltage level Model Output current(A) Adapted motor Fixed way
KW HP
Three-phase  AC380V LSD-H7400-1.5K 3.8 1.5 2 Wall-mounted
LSD-H7400-2.2K 5.1 2.2 3 Wall-mounted
LSD-H7400-4K 9 4 5 Wall-mounted
LSD-H7400-5.5K 13 5.5 7.5 Wall-mounted
LSD-H7400-7.5K 17 7.5 10 Wall-mounted
LSD-H7400-11K 23.5 11 15 Wall-mounted
LSD-H7400-15K 33 15 20 Wall-mounted
LSD-H7400-18.5K 39 18.5 24 Wall-mounted or standing cabinet
LSD-H7400-22K 46 22 30 Wall-mounted or standing cabinet
LSD-H7400-30K 62 30 40 Wall-mounted or standing cabinet
LSD-H7400-37K 76 37 50 Wall-mounted or standing cabinet
LSD-H7400-45K 92 45 60 Wall-mounted or standing cabinet
LSD-H7400-55K 110 55 74 Wall-mounted or standing cabinet
LSD-H7400-75K 150 75 100 Wall-mounted or standing cabinet
LSD-H7400-90K 180 90 120 Wall-mounted or standing cabinet
LSD-H7400-110K 210 110 147 Wall-mounted or standing cabinet
LSD-H7400-132K 265 132 176 Wall-mounted or standing cabinet
LSD-H7400-160K 320 160 214 Wall-mounted or standing cabinet
Product installation size
Inverter model specifications Adapted motor power D(mm) L(mm) K(mm)
LSD-H7400-1.5K 1.5KW 300 400 210
LSD-H7400-2.2K 2.2KW
LSD-H7400-4K 4KW
LSD-H7400-5.5K 5.5KW
LSD-H7400-7.5K 7.5KW
LSD-H7400-11K 11KW 400 500 235
LSD-H7400-15K 15KW
LSD-H7400-18.5K 18.5KW 420 800 360
LSD-H7400-22K 22KW
LSD-H7400-30K 30KW
LSD-H7400-37K 37KW
LSD-H7400-45K 45KW
LSD-H7400-55K 55KW 460 800 360
LSD-H7400-75K 75KW
LSD-H7400-90K 90KW
LSD-H7400-110K 110KW
LSD-H7400-132K 132KW 500 1150 360
LSD-H7400-160K 160KW
Technical Parameters
Input voltage range AC400V±15% Input frequency range 50~60Hz
Output voltage range 0V~Rated input voltage Output frequency range 0.1~400Hz
Carrier frequency 1.2KHz~15.0KHz Power range 1.5~160KW
Modulation Sine wave PWM modulation Communication method RS-485 serial communication
Control mode Open loop vector control (SVC), ordinary V/F control, torque compensation V/F control
Torque control Torque boost can be set, the maximum is 10.0%, starting torque can reach 150% at 1.0Hz
Programmable analog input and output 0~10V analog voltage input 0~20mA analog current input
0~10V analog voltage output 0~20mA analog current output
Digital input and output Up to 8 multi-function terminal inputs, 3 multi-function output terminals
Simple PLC, multi-speed control function Realize up to 15-speed operation through the built-in PLC or control terminal
Other functions 4-stage acceleration/deceleration switching, counter, external emergency stop, automatic voltage regulation (AVR), frequency tracking, swing frequency control, DC braking, automatic reset and restart, etc.
Protective function Overvoltage, undervoltage, overheating, low temperature, overcurrent, overload, instantaneous power failure frequency tracking start, reverse rotation limit, parameter lock, input and output phase loss, PID disconnection, etc.

Product Application

According to the current working status of the air compressor and water pump, if the pressure reaches the preset value, the motor will run after unloading, which will generate unnecessary electricity demand and waste electric energy. After installing the frequency converter, and setting the required pressure, if the pressure exceeds the set value, the frequency converter starts to decelerate, to make the pressure be constant within the set range. The frequency converter controls the air compressor or water pump motor to automatically adjust the speed, so that the equipment used can achieve the best energy-saving effect under the condition that the pressure is basically unchanged. If it runs at the set pressure value for a long time, it will automatically stop. And when the pressure is lower than the set lower limit threshold, it will automatically start.

Product Technical Features

1. It adopts 32-bit motor dedicated CPU, which has high-precision frequency output, and the resolution reaches 0.01Hz.

2. Built-in RS485 communication interface, and comes with simple PLC and PID control functions.

3. It has the functions of torque compensation and dead zone compensation.

4. With automatic voltage adjustment, frequency tracking starts when instantaneous stop.

5. With multiple fault protection functions in conditions such as overvoltage, undervoltage, overheating, low temperature, overcurrent, overload, lack and etc.

6. The carrier frequency is adjustable. It will run silently when the carrier frequency is up to 16KHz.

7. Low-speed rated torque output is 0.2Hz, and 150% rated torque can be output at startup.

8. Built-in pressure display screen, online setting and detection of pressure, convenient and more intuitive.

9. With built-in pressure transmitter, it can realize constant pressure transformation without adding any device.

10. All data has been debugged before leaving the factory, making installation easier and operation more convenient.


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