Introduction
Getting Started
1–2
Introduction
Main Features
Congratulations on your purchase of an SJ100
Series Hitachi inverter! This inverter drive
features state-of-the-art circuitry and components
to provide high performance. The housing
footprint is exceptionally small, given the size of
the corresponding motor. The Hitachi SJ100
product line includes more than a dozen inverter
models to cover motor sizes from 1/4 horsepower
to 10 horsepower, in either 230 VAC or 460 VAC
power input versions. The main features are:
• Convenient keypad for parameter settings
• Built-in RS-422 communications interface to
allow configuration from a PC and for field bus
external modules.
• Sixteen programmable speed levels
• Motor constants are programmable, or may be
set via auto-tuning
• PID control adjusts motor speed automatically to maintain a process variable value
The design in Hitachi inverters overcomes many of the traditional trade-offs between
speed, torque and efficiency. The performance characteristics are:
• Sensorless vector control
• Regenerative braking circuit
• High starting torque of 200% rating or greater
• Continuous torque operation at 100% within a 1:10 speed range (6/60 Hz / 5/50 Hz)
without motor derating
• Fan has On/OFF selection to provide longer life for cooling fan (on models with fan)
A full line of accessories from Hitachi is available to
complete your motor application. These include:
• Digital remote operator keypad
• Braking resistors (shown at right)
• Radio noise filters
• CE compliance filters
• DIN rail mounting adapter (35mm rail size)
Model SJ100-004NFU
Braking Resistor
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