AC Inverter SJ700D

The Hitachi SJ700D flux vector drives, with updated features, replace the HF430; all sizes are dimensional drop-ins with the exception of the 7.5 HP models. 25 HP models are now available.

Hitachi SJ700D AC Drives incorporate a three-drives-in-one design philosophy. The design provides Simple V/F (Volts-per Hertz) Constant Torque (CT) mode, Sensorless Vector (SLV) mode, and Closed-Loop Vector (CLV) mode. Switch to SLV control by simply changing a parameter value. SLV control offers 200% stating torque at 0.3 Hz and ±0.5% speed regulation.
Closed-Loop Vector (CLV) control is available by installing a low-cost encoder feedback card and changing a parameter value. Of course, the motor must be equipped with a suitable encoder. CLV control dramatically improves performance. CLV control offers full rated torque down to zero speed and 200% starting torque at 0.0 Hz.
SJ700D AC drives are available from ½ to 75 HP, 200-240V and from 1 to 550 HP, 380-480V. All SJ700D AC drives are suitable for 50 Hz or 60 Hz input.


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  • Three operating modes provide application flexibility:
  • V/F (Volts-per-Hertz) Constant Torque (CT)
  • Sensorless Vector (SLV)
  • Closed-Loop Vector (CLV) (requires encoder feedback option)
  • Space-saving Compact Size, easy to maintain
  • Standard Digital Operator Panel
  • Optional Enhanced Operator Panel with Parameter Copy (model no. WOP)
  • Serial communications (RS-485 standard)
  • Constant torque speed range to fit application requirements
  • 200% Starting Torque at 0.3 Hz and ±0.5% speed regulation (SLV mode)
  • 200% Starting Torque at 0.0 Hz and full rated torque down to zero speed (CLV mode)
  • 16 preset frequencies
  • Built-in PID control
  • Built-in dynamic braking circuit (to 30 HP), (resistor optional)
  • Eight programmable digital inputs
  • Three analog input choices (0-10 VDC, ±10 VDC and 4-20 mA)
  • Five programmable digital outputs
  • Two programmable analog output choices (0-10 VDC, and 4-20 mA)
  • IP20 Enclosure (optional NEMA 1 type conduit box kits are available)
  • Conforms to global standards: UL, c-UL, CE, and c-Tick

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