The integrated Hitachi 32-bit SuperH RISC processor delivers the dynamic response needed for high-end applications. To compensate possible temperature fluctuations within the motor, which might adversely affect smooth control of the motor,an online/offline motor-autotuning function is included. A newly developed internal control process helps to drastically reduce any rotational fluctuation at low speed, which enhances process stability and precision.

The SJ300 is one of the most compact drives in its class, but offers an unprecedented array of features built-in, such as Advanced Sensorless Vector Control (closed/open loop), Starting Torque >200%, Full Torque at 0 Hz, High-Torque Multi-Motor Operation (with SLV), Motor-Autotuning (online/offline), Quick-Stop Function, RS485 and RS422 interfaces, PID Control, P/PI Control, Automatic Voltage Regulation,Motor Thermistor Input, User Macro Saving and Global Standards to CE, UL, c-UL, CTick, CSA.

The SJ300 is designed for any application, ideally suited to highly dynamic applications such as packaging, printing, textile, machine tool industries, lifts, cranes, centrifuges, extruders and any application which requires high starting torques or is subject to shock loads.

There are seven inputs of which five are programmable, two programmable transistor outputs, one programmable relay output and a dedicated thermistor input terminal. Access to the terminal rails is by removing the lower front case.

There is also the option of a variety of fieldbus communications.

Speed setting is either via the keypad, an external analogue or digital signals or fieldbus communications. A removable keypad with LED display comes as standard and is used for programming.

The SJ300 has advanced protection sensing circuits and there are alarms for overcurrent, over voltage, under voltage, over temperature, overload, ground fault and so forth. Automatic voltage regulation is included for output voltage control.

The SJ300 is a truly global product and carries UL and CSA approvals as well as being CE certified for low voltage and EMC Directives. The Hitachi SJ300 Inverter is available from 1.5kW to 132kW in the Three Phase 400V class and all sizes are immediately available from stock.