has launched the smallest sensorless flux vector Hitachi inverter ever.
The tiny Hitachi SJ100 inverter is more than 50% smaller than its predecessor
the Hitachi J100 inverter - and that was already one of the smallest drives
of its class! The new Hitachi inverter drive gets its first European showing
at the Drives and Controls Exhibition in Telford during 16-18 March 1999.
to Press Office Menu
The Hitachi SJ100 inverter has extended inverter drive performance to
new levels by providing starting torque of 200% or more. The Hitachi SJ100
inverter drive also has advanced features such as auto tuning to set motor
constants; second motor setting; PID control as standard, 16-stage multi-speed
operation; and inrush current protection built in. Other useful benefits
from the unit include an intelligent terminal system that allows users
to select only the functions needed from a comprehensive set of enhanced
functions; and the ability to select fan on or off to give longer cooling
Equipped with regenerative braking as standard, the Hitachi SJ100 inverter
is ideal for constant torque loads where high torque is needed at low
speeds - such as for conveyors, extruders, mixers, lifts and others.
Operation is simple, the only controls being run and stop keys, plus a
speed control knob on the main panel, and function, scroll up and down,
and store buttons inside the front case. Functions are grouped within
the menu systems to enable rapid setting. The intelligent, assignable
terminals also allow for remote programming and for downloading programs
from a PC or one of Hitachi's remote hand-held programming units.
At the heart of the inverter drive is Hitachi's own ISPM (inverter systems
power module) that contains all of the power, logic and protection electronics
in a compact monobloc component. This construction provides incredible
reliability and has been the major contributor to the miniaturisation
of such a powerful range of Hitachi inverter drives. Additionally, the
advanced high volume manufacturing employed in the production of the ISPM
brings price benefits to the customer.
The Hitachi SJ100 inverter has been designed as a truly global product
and carries all world standards including CE, UL, C-UL and C-Tick. The
Hitachi SJ100 inverter is certificated to comply with both the CE low
voltage and EMC directives. Stocks of all sizes from 0.2kW to 2.2kW single
phase and 0.4kW to 7.5kW three phase are immediately available.
Hitachi changed the UK's AC inverter drives market radically when it launched
the Hitachi J Series sensorless flux vector inverter drives. The Hitachi
inverters delivered vastly superior performance and full torque at the
lowest speeds thanks to an innovative method of measuring motor load to
enable the voltage to be adjusted to ensure maximum torque at all times.