Contact: Miss Europe Contact: 159-7414-3465 Online QQ: 1922601218 First, the basic functions of a water supply equipment, constant pressure control: stable water supply pressure and automatically adjusting the pump in accordance with changes in water Frequency downconversion and state work together and follow the "first open the first stop" principle. 2, anhydrous automatic shutdown function: if the water without water for any reason this system will automatically shut down once the water pressure reaches the set value is automatically switched on. 3, the pump state auto adjustment function: In the case of continuous low water consumption, for the protection of each pump is normal, the system will switch the pump timed run. 4, the protection function: a phase, overvoltage, undervoltage, overcurrent, overload, short circuit, overheating, stall protection function. 5, since the instantaneous power failure recovery function: changes due to momentary power outage, automatically resume operation state after the call. 6, water fill pressure, self-cleaning function: water peak, due to the water pressure drops, resulting in runoff for when not on the water, it can guarantee automatic supplement the water, but also makes storage get to kill harmful bacteria coliform action to ensure the safety of drinking water quality in line with national targets. Note: Item 6 of this chapter for additional functionality option. Select the size and shape of this function, and self-cleaning they use (buffer) type storage device can be determined based on the customer and the actual situation. Second, the application of a constant pressure water supply equipment, water supply equipment applicable to the pool of high-rise buildings, hotels, schools, residential area towns, enterprises and institutions, the new rural construction of rural domestic water. 2, water supply equipment for factories, industrial and mining production water or life. 3, constant pressure water supply equipment for all types of water supply and drainage, water supply stations, sewage water plant, agricultural irrigation and drainage stations. 4, constant pressure water supply equipment for high-rise, residential, centralized water supply enterprises. 5, water supply equipment for the production and life of the cooling water, circulating water pressure. 6, water supply equipment for oil pipelines, oil depots, gas stations and other constant pressure oil. Third, the constant pressure water supply equipment control principle with frequency control to achieve constant pressure water supply, and with a regulating valve to achieve constant pressure water supply compared to energy-saving effect is very significant (can be calculated depending on the circumstances). Its advantages are: 1, the starting balance, starting current limit within the rated current, thus avoiding the impact on the grid at the start; 2, the average pump speed is reduced, thereby prolonging the life of pumps and valves; 3 can eliminate water hammer effect starting and stopping; Generally speaking, when by a frequency control a motor, just so that you can match with the drive motor capacity and the actual motor capacity. When an inverter simultaneously control two motors, in principle, with the drive motor capacity should be equal to the sum of the two motor capacity. However, if at the time of peak load water supply quantity than two pumps at full speed a lot of difference, may consider appropriate to reduce the capacity of the inverter, it should be noted that there is sufficient capacity. While the pump is running at low speed, the motor current is small. However, when the user's frequent water changes, the motor will be in frequent acceleration and deceleration state, acceleration and deceleration of the current can be slightly more than the rated current of the motor, causing the motor to overheat. Therefore, the motor thermal protection is required. This temperature rise due to frequent acceleration and deceleration and accumulated, electronic thermal protection function within the inverter is difficult to play a protective role, it should be used for the motor thermal relay thermal protection. In the main function of the preset, the highest frequency should be rated for a maximum operating frequency of the motor frequency inverter. L, deceleration time in the case of the PID regulator, the acceleration and deceleration time should be set shorter, so as not to affect the dynamic response of the decision by the PID regulator. Such as the drive itself has PID adjustment function, simply set the preset PID function is active, the set-up and spin-down time will automatically lapse. Sales Miss Europe: 15974143465 Online Q: 1922601218 Address: Yuhua District, Italy all the way to the modern business center Red Block B B4062 site: Long 沙黎托 Industrial Park