Source for Application of CHV160 to Multi-pump Constant Pressure Water Supply manufacturers at Shenzhen INVT Electric Co., Ltd.. Find a quality supplier or manufacturer of Application of CHV160 to Multi-pump Constant Pressure Water Supply from China

To meet the constant pressure requirement for water supply in industrial production, life, and agricultural water-saving irrigation projects, the CHV160 series dedicated water supply inverters are applied to quickly assemble a constant pressure water supply system. This kind of inverter integrates the variable frequency speed regulation technology, PLC technology and PID control technology, and can be assembled into a complete closed loop automatic control system. The use of this dedicated inverter to assemble an automatic water supply control system features small investment, high automation degree, complete protection function, reliable operation, simple operation, and obvious water-saving and energy-saving effect. Especially, it will not cause secondary pollution. Therefore, with its excellent cost-performance ratio, the inverter is the most ideal equipment to replace water tower, gravity water tank, and towerless water supply unit.

 

When the automatic water supply system operates, the equipment uses a high-sensitivity pressure sensor over the water supply pipeline to detect the pressure change of the pipeline upon water consumption change, and continuously transmits change signals to the inverter. After judging and calculating by use of a microcomputer and comparing with the set pressure, the inverter sends a frequency change command to the controller. In this way, the controller changes the frequency to change the rotation speed of the pump motor and the number of pumps to be enabled, and to automatically adjust the water consumption at peak/valley time, to ensure the constant pressure of the water pipeline and meet the user’s requirement for water consumption.

 

Guangzhou Changning Mechanical & Electric Equipment Co., Ltd. is a professional manufacturer of constant pressure water supply equipment. The customer requires that two variable frequency pumps can be used, the dormancy function can be used 24 hours a day, and the faulty pump function can be masked. And furthermore, the fast restart function in the case of instantaneous power failure should be implemented. According to these requirements, the final adjustment parameters are as follows:

 

P0.01     Operation command channel           1: Terminal command channel

P1.15     Power failure restart selection         1: Restart enabled,

P2          Input the whole group of parameters according to the actual situations

P4.12     Terminal function detection selection upon power-on         1: Terminal operation command enabled upon power-on.

P5.02     S1 terminal function selection          1: Forward operation

P5.03     S2 terminal function selection          41: Motor A disabled

P5.04     S3 terminal function selection          42: Motor B disabled

P5.17     Upper AI1 limits                                5.00V.

P6.04     Relay 1 output selection                  3: Fault output

PF.00     Water supply mode selection           1: Universal water supply mode

PF.01     Water supply pressure setting source selection          0: Digital Setting

PF.02     Digital setting of water supply pressure         set by actual requirement (set to 50.0% presently)

PF.03     Pressure feedback source selection              0: AI1 feedback setting

PF.11     Pump A type selection                             1: Variable frequency control pump

PF.12     Pump B type selection                                   Variable frequency control pump

PF.13     Pump CB type selection                          3: Dedicated dormant pump

PF.18- PF.20 Rated current of pump                    Input according to the actual current of the motor

PF.25     RT1 input function selection                   1: Connecting pump A for variable frequency control

PF.26     RT2 input function selection                   2: Connecting pump A for power frequency control

PF.27     RT13 input function selection                 3: Connecting pump B for variable frequency control

PF.28     RT4 input function selection                   4: Connecting pump B for power frequency control

PF.29     RT5 input function selection                   6: Connecting pump C for power frequency control

PF.47     Current moment                                      Input current moment (this parameter should be set if a dormant pump is used)

PF.48     Selection of pressure steps                    1

PF.49     T1 start moment                                     00.00

PF.50     Pressure in time segment T1                  Input by actual requirement (set to 40% presently)

PF.51     T2 start moment                                     23.59

PF.65     Dormant time segment selection             1

PF.66     Dormant pressure tolerance                   Input by actual requirement (set to 1% presently)

PF.67     Adding/reducing pump delay for dormancy          Input by actual requirement (set to 6 presently)

PF.68     Dormancy awake enables                       1: Enabled

 

After the above commissioning, the solution was finally acknowledged by the user, which once again shows that the application of the water supply card does not have any logic operation problem. The problems of water supply machine complained by the customer are normally caused by improper parameter adjustment.