Convo inverter, inverter the CDE300 series inverter, a 32-bit DSP (digital signal processor) hardware platform, complete speed sensorless vector control, V / F, vector control has better control performance; CDE300 design flexible, containing SVC (no speed sensor vector control) and V / / F control with speed control advantages of high precision, fast response torque, low-frequency output torque. Technical features: advanced vector control algorithm, decoupling control of motor full control, both automatically detects the motor parameters, vector, V / F control mode is optional. G, P-one structure, easy to use. Combinations of frequency source can be switched according to site requirements. Online monitoring and switching of multiple parameters. 16 speed control, programmable PLC wobbulate. Independently programmable multifunction 8 digital inputs, 2 analog the input (0-10V/0-20mA), 1-way high-speed pulse input, a high speed pulse output, 2-way open collector outputs, 2 analog output 0-10V/0-20mA 1 channel relay output. The multi-point V / F curve, the user can set flexible. Built-in PID controller, simple closed-loop control of flow, pressure, and other convenience of customers. Automatic voltage adjustment and automatic current limiting, to make the system run more stable. Automatic speed tracking, to achieve a smooth start. The standardized configuration RS485 serial communication interface, using international standard the MODBUS-RUT communication protocol. Wide operating voltage ranges, AC200V-AC480V. Perfect protection function can be realized overvoltage, undervoltage, input and output phase loss, overheating, overload, external fault, overcurrent output three-phase phase short circuit to ground short circuit protection. Completely independent duct design to improve anti-dust, cooling fan operation mode is optional. The deceleration process using special current algorithm, to meet the instantaneous current overload occasions. Excellent electromagnetic compatibility, meet the requirements for use in a variety of occasions. The Canworld inverter multi-pump constant pressure water supply works: The constant pressure water supply refers to the amount of water in the water supply network changes, the outlet pressure to maintain a constant water supply. The outlet pressure of the water supply network value is determined on the basis of user needs. The traditional way of constant pressure water supply using water tower facilities to achieve the high-water tank, pressure tank. In recent years, with increasing frequency control technology mature, significant energy-saving effect and reliable and stable control in the water supply system in a wide range of applications. Variable speed, constant pressure water supply system of pump motor implement microcomputer detection, computation, based on water consumption and water pressure changes by automatically changing the pump speed to maintain a constant pressure to meet the water requirements, is the most advanced and reasonable