Усилитель ПИД-контроля LEO BWS система охраны окружающей среды оборудование для подачи

Product Overview

The pressure value on the pump outlet is set as a parameter in the water supply equipment. The output frequency is controlled by PID inverter

and the rotating speed of pump motor is consequently adjusted to keep the water system pressure constant as the preset pressure value.

When the water consumption increases, the frequency is increased accordingly to accelerate pump speed. On the contrary, when the water

consumption reduces, the frequency is decreased to reduce the pump speed. In this way, a sufficient pressure (same as the preset value) and

water supply (which fluctuates according to the water consumption of the users) in the entire network is guaranteed.

Product Features

This device features stable pressure, non-frequent operation, high efficiency, energy saving and low noise, which can be used to replace traditional

high-positioned water tanks or water towers.

• 24 hours constant pressure and automatic activation of auxiliary pumps according to pressure signals


• Smooth start, which eliminates water hammer and extends the service life of motors and pumps


• Protection against under or over voltage, overcurrent, overheat, overpressure as well as no-load of water


• Optional functions available on customer’s demand, such as motors in-turn running, sleep mode, etc.


• Digital PID control, which is better than PLC logical control


• Stable operation and easy handling due to high automation and intelligence level


• 100% factory tested with very low failure rate

Applications

• Communities, villas, office buildings, high buildings, hotels, restaurants, etc.


• Boilers (cold and hot water)


• Pressure boosting in water plant


• Industrial production


• Cooling water circulation system


• Fire fighting

Operating Conditions

• Power: 380 V, 50 Hz (60 Hz on request)


• Ambient temperature: 0 - 40°C, relative humidity up to 90%, no condensation


• Medium: Clean water or other liquids similar to water in physical and chemical properties


• PH value: 5 - 9


• Liquid temperature: 0 - 70°C


• Altitude: up to 1000 m, slope of the base up to 5 degree

Product Functions:

Constant pressure water supply

The pressure of pipe network is controlled within a certain range.

Alternative operation

The pumps work by turns according to the present timing. The operation time for each pump is roughly equal to prolong the service life of the device.

Timing function

Working pressure values in different time can be set to meet the demand of water supply.

Sleep mode

The device goes into sleep mode for energy-saving during the night or the water consumption is very few.

Automatic wake-up

When the pressure of water network reduces to the preset value, the device will be waken up automatically and start to operate.

Automatic reset

In the event of an inverter failure, the controller will reset the inverter automatically.

If the reset time is more than preset number, a display of inverter failure will be generated by the system. Maintenance of the inverter is necessary.

Automatic operation at power frequency

In the event of malfunction of the inverter or pressure sensor, the device will operate at power frequency automatically to ensure water supply and sound an alarm.

Manual/Automatic operation

The device has two operation modes (manual and automatic) for selection.

Automatic start/stop

In case of low water level in the water source, the device will stop the working pumps and sound alarm. When the water level recovers, the device will restart automatically.

Overload protection

When the current of the motor exceeds the preset value for a specified period of time, the controller will shut down the related pump and sound an alarm.

Water-load protection

If the device has no water or high gas content for a specified period of time, the controller will shut down the entire device.

The device runs automatically again, when the water is recovered and the gas inside is exhausted.

Overpressure protection

When the pressure is higher than preset value for some reason during operation, the device will be shut down automatically to avoid any damage of pipelines.

Low pressure protection

When the pressure of the pipelines is lower than preset value, the device will judge it as a leakage on the pipe network and will be shut down

automatically to save the water.

Alarm function

Any fault during operation will be alarmed and displayed on the LCD screen automatically.

Information storage

All alarm information can be saved in the controller for inspection.

Password Setting

The device is protected by a password. Only the administrator is authorized to change the parameter.

Reset of parameter values

In case of abnormal operation due to change of parameter values by users, the values can be reset to the factory default settings for safe operation.

Overvoltage & Undervoltage protection

If the voltage is 10% higher or lower than normal voltage, the device will stop working to avoid any damage of the components.

Phase sequence and phase-lacking protection

In case of wrong phase sequence or lack of phase at power supply, the inner control components will protect the device and ensure it’s normal

operation.

Remote monitoring

The device can be equipped with a remote monitoring system.

To Know Leo

      LEO Group (got listed in Shenzhen Stock Exchange with stock code 002131) is a national high-tech enterprise engaged in R&D, design, manufacture, sales and service of all series pumps and systems. LEO is the first listed company in Chinese pump industry, one of the drafters of pump industry standard and the vice president of drainage and irrigation machinery branch of China Agricultural machinery industry association as well. "LEO" has been identified as "China Famous Brand" by the State Administration of Industry and Commerce. It is mentionable that LEO has the only stateauthorized technical center in pump industry.

     LEO has currently two industrial groups respectively for industrial and civilian applications. With four manufacturing bases in Wengling of Zhejiang, Xiangtan of Hunan, Wuxi of Jiangsu and Dalian of Liaoning, LEO possesses a solid foundation to become a world-class pump and system solution provider rapidly.

     With over 70 years' professional technology, LEO will continue her consistent creativity and development ability in each pump for human's health.