《CA300系列中央空调专用变频器用户手册》-英文.pdf

Preface Preface Thank you for purchasing the CA300 series central air conditioner AC drives developed and manufactured by Inovance Technology. CA300 is a high-performance current vector AC drive that is specially designed for heating, ventilation and air conditioning (HVAC), and used to control and adjust the speed and torque of a three-phase AC asynchronous or synchronous motor in flexible control of rotary-screw compressors. CA300 implements high-performance vector control and automatically adjusts the voltage-frequency ratio output by the AC drive based on the motor load ratio, which improves motor and system efficiency, reduces energy consumption, noise, and vibration of the motor, and optimizes the cooling capability of the compressors of chillers and other HAVC systems at constant temperature and pressure. ■ Features 1) Smaller size with greater power density Compared with MD380 of the same power model, CA300 is 40% smaller in size on average. 2) Wide operating range The rated input voltage is three-phase 380 V AC to 480 V AC and the wide operating range is 323 V to 528 V. 3) Long lifetime With improved bus capacitor configuration, CA300 has a design life of 10 years. 4) Fan-driven circuit protection The fan-driven circuit is effectively protected in the event of unexpected short circuit resulting from stalled or damaged fan. 5) Enhanced system protection CA300 offers effective protection against output short-circuit to ground and pre-charge relay (contactor) faults. 6) High condensation pressure protection CA300 enables the Safe Torque Off (STO) function and hardware-based blockage of pulse-width modulation (PWM) output to avoid abnormal stop upon a system failure. 7) Electromagnetic compatibility (EMC) and certification CA300 qualifies for Conformance European (CE) Certifi