一、Load Characteristics

This load is a quadratic torque load; its power P has a cubic relationship with the speed N; the load is generally light, and it can be applied by using an inverter with the same power or reduced power.

二、Requirements for Inverter Application

1. It has constant water supply pressure, fast dynamic response, high stability and reliability.

2. Humanized operation setting interface, simple parameter setting, and remote 485 communication monitoring; the system can set the pressure according to the user's needs, display the actual pressure in real time, and can modify it at any time.

3. It has perfect protection functions such as overcurrent, overvoltage, overload, water shortage, and explosion-proof tubes.

三、Debugging Guide

1. On-site pictures:

2. Wiring diagram:

3. Parameter description: Take the remote pressure gauge (voltage) feedback signal and 485 to monitor the real-time dynamics of water supply as an example.

四、Matters Needing Attention

1. If the feedback source uses a pressure transmitter (analog current signal), it is necessary to set F0-03=1 (current signal 4-20mA); frequency source F1-01=2 (CI current); pressure transmitter signal line Connect to 24V, CI, GND.

2. Select a pressure gauge with a suitable range for the user. The power cord and output cord should be confirmed to be free of cracks and exposures to ensure the safety of electricity use.