Large capacity AC drives

An improved Sensorless Vector (SLV) control algorithm enables the SJ700 to develop more than 150% starting torque at 0.3 Hz. Using Hitachi’s unique “0 Hz Domain” open-loop control mode, the SJ700 can develop 130% torque at 0 Hz, ideal for vertical lift applications. At the same time, Hitachi has greatly simplified the autotuning process, making commissioning trouble-free. The SJ700’s Easy Sequence ( EzSQ) is like having an Industrial Control System (PLC) built into the inverter. In many cases, the need for a separate PLC can be eliminated. The SJ700 also features patented Micro Surge Voltage suppression, advance trip avoidance functions, configurable sink/source logic on I/O, and much more.