SJ300 speed sensorless vector control variable frequency drive

Products with advanced sensorless vector control torque control with Hitachi's advanced high-speed sensorless vector control to complete effective control at low speed high torque speed fluctuation has been greatly reduced, thereby increasing process stability and accuracy. There are close to 150% of near OHz high torque SJ300 drive a small motor in a near 150% 0Hz high torque. Brake ON / OFF operation can be easily combined with this feature. High torque multi-motor operation to simultaneously effectively two motors to operate. Conventional speed sensorless vector control can only control one motor. Online / Offline motor parameter auto tuning speed sensorless vector control of the self-tuning function can be easily carried out online, but also offline. Online self-tuning function in real-time access to the current operating conditions of the motor motor parameters. (When the motor temperature rises, the primary coil】 【resistance will vary). Product Attributes input / output functions ● Input and output terminals are applied intelligent terminal system. Drain / source logical choice possible. ● In addition to monitoring the pulse output, analog (current and voltage) output terminals-AM and AMI as standard built-in. Right case shows "from the drive" can receive "Master Inverter" analog output as its frequency command to achieve the tracking control. ● auxiliary speed input analog signal can be generated by the additional. Additional analog signal can be used as auxiliary speed input. The third motor operating parameter settings can be set up to three motors operating parameters. This additional feature is switched off to control multiple motors are useful. Fan ON / OFF selection drive running cooling fan, cooling fan also stops the inverter stops running, this feature can extend the service life of the cooling fan and the drive to eliminate the no-load fan noise. PID operation to help simplify the system and saves unnecessary because the original cost of the PI controller, for some applications, such as constant voltage control is very useful. Power failure deceleration and stopping power outage SJ300 even in the case, can take advantage of the motor regenerative energy to slow down and stop, which in some special needs of the textile process. Up / Down Function Up / Down functions fine-tune the frequency of the test run and convenient. Frequency scaling conversion factor by converting the display output frequency is displayed after the "line" / speed of the process. Other notes three line "self-locking" start signal without the need for external devices. P / PI control is selected as truck or tram (material handling) operation provides stable control. Transactions that other transactions can be interviewed.