Frekvenční měniče Katalogy, manuály (EN+CZ)

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Vydal: ABB s.r.o, ELSYNN Autor: ABB ELSYnn

Strana 714 z 825







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Encoderless Encoders are known cause failures due to their exposed position the motor. This enables easy handling power-loss situations and sudden load changes. Fast response mains fluctuations and process side changes The exceptionally fast torque step response of the ACS 6000 means that can respond to process and mains changes extremely fast. Due to the continuous updating the motor state and the comparison the actual values to the reference values, every single switching in the inverter determ ined separately. ABB uses high power semiconductor switching devices and topology that brings down the part count minimum. Low losses The inherently low total losses the IGCT require low cooling capacity and small cooling equipment. Control the drive is immediate and smooth under all conditions and the audible noise the motor is considerably reduced. 8 ACS 6000 Control The ACS drive control platform is based BB’s award-winning Direct Torque Control (DTC), resulting in the highest torque and speed performance as ell low est losses ever achieved in medium voltage drives. every ps) in the advanced motor software m odel the high-speed digital signal processor. DTC ensures the absolute lowest losses by switching the power semiconductors only when necessary.e. The motor state calculations are updated 40,000 times second (i.Technology highlights Reliability has been the main guiding principle the research and development activities for ABB’s medium voltage drives. IGCT switching devices ABB has developed high power semiconductor called IGCT (Integrated ate Commutated Thyristor) allow the use modern control algorithm hich can elim inate harm onics, improve dynamic response time and maintain, or even control, the power factor. What Direct Torque Control? DTC revolutionary motor control method for drives that allows accurate control of both motor speed and torque without pulse encoder feedback from the motor shaft. This results a reliable, compact and service-friendly drive. ABB . Fuseless design The ACS 6000 medium voltage drive is designed operate safely without fuses, resulting less spare parts and better overall reliability. BB’s ACS 6000 medium voltage drive can operate without encoder, thereby reducing maintenance costs and ensuring high levels availability. This allows fast startup after safety interruptions. In DTC, stator flux D l Typical torque (T) response DTC drive, compared with flux vector control with open loop Pulse Width Modulation (PWM) and torque are used primary control variables. Part count The fewer the parts the higher the reliability