AC variable frequency drive (VFD) users continue to benefit from new features ... proportional-integral-derivative (PID) control, and even a built-in programmable logic controller (PLC) with expansive ...

Incoming ac line voltage is rectified to dc voltage ... regulation of the variable is possible via PID loop control. The VFD's PID algorithm uses mathematical properties to determine reaction ...

Hitachi America, Ltd., Industrial Components and Equipment Division, announced the introduction of the SJ700B Series of Industrial AC Variable Frequency Drives, with full availability ... source logic ...

The Durapulse GS20 Series of next generation high-performance variable frequency drives provides many standard and advanced functions in a compact reduced size unit. The new GS20X series of AC drives ...