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Large capacity AC drives

Hitachi’s high-capacity SJ700 Series of inverters extends their model range up to 500 hp.

Pw 7628 Webhitach2i
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.
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