Equipment Consulting Dai: 13548670698 (Please call for inquiry ~) QQ online: 1766048690 Address: Yuhua District, Italy all the way to the modern business center B4062 Star Factory Address: Long Shali Tuo Industrial Park site: www.cshxgs.com professional water equipment manufacturer, Hanson supply, of your worries - Chengdu secondary water supply equipment manufacturers (Dai: 13548670698) no negative pressure water supply equipment, constant pressure water supply equipment, water piping pressure equipment, non-vacuum pipe pressurized steady flow of water supply equipment, production and processing, specializing in non-vacuum, secondary pressure, constant pressure, no water tower equipment manufacturers. (National Recruitment Agency: 13548670698) All devices are tailored according to customer specifications, prices vary depending on the configuration, please call Miss Dai: 135-4867-0698. Constitution and the principles of secondary water supply facilities in Chengdu, Chengdu secondary water supply equipment to the network by measuring the pressure after the built-in PID controller operation of the inverter, adjust the output frequency to achieve constant pressure water supply pipe network. Overrun signal frequency converter (generally as a pipe network pressure limit signal) to timely notify the PLC logic switching frequency pump. In order to prevent water hammer phenomenon, pump start and stop the linkage of its outlet valve. Between system works is shown below. Assuming the entire system consists of four sets of pumps, a converter, a PLC and a pressure transmitter and a number of auxiliary member. Function of each part as follows: water pipes installed in the pressure pipe network pressure transmitter will be converted into electrical signals 1-5 volts; inverter is used to adjust the pump speed to regulate the flow; PLC logic for switching. In addition, the above system is also equipped with external auxiliary circuits to protect the automatic control system fails to maintain system operation through manual adjustment methods to ensure continuous production. Second, equipment selection Chengdu secondary water supply equipment mainly explained by the frequency control cabinet, pressure sensors, pumps and other components. Frequency control cabinet by the circuit breakers, inverters, contactors, relays, PLC and other components. 1. The water supply system selection principles (1) reservoir capacity should be greater than the amount of water per hour maximum. (2) should be greater than the actual water pump lift height. (3) the pump flow rate should be greater than the sum of the actual maximum amount of water. (4) frequency control cabinet selection: the user can determine the height of the pump type and number of units based on water supply and water, then the selection of the control cabinet. 2. Drive according to process requirements, it is recommended with ABB ACS600 series inverter. ACS 600 series inverter is ABB's Direct Torque Control (DTC) technology, combined with high-performance inverter with many advanced manufacturing processes to deliver. It has a wide power range, good speed control and torque control characteristics, complete protection and flexible programming capability, high reliability and small size. Chengdu secondary water supply equipment Main technical data: Power range: 2.2-3000kW supply voltage:???? 380/400/415/440/460/480 / 500VAC 3 phase ± 10%; Power frequency: 48-63Hz control connection: 2 programmable analog input (AI); 1 programmable analog output (AO); 5 programmable digital inputs (DI); 2 programmable digital output (DO). ? Continuous load capacity: 150% In, allowed for one minute every 10 minutes Serial communication capability:? A standard RS-485 interface converter can be easily connected to a computer. ? Protection features: overcurrent, I2t, overvoltage, undervoltage protection, thermal protection, short circuit protection, ground fault protection, undervoltage buffer, Motor underload / overload protection, stall protection, serial communication fault protection, AI signal loss protection. Equipment Advisory wear: 13548670698 QQ online: 1766048690 Welcome to visit the company: Yuhua District, Italy all the way to the Red Star Business Centre, Block B B4062 modern factory direct: Lituo Industrial Park. For more information, please call for inquiry and look forward to your call .