Hitachi SJ Series, User Manual

Page: 224 / 786

12-9-7
Chapter 12 Inverter Function
12.9.5 Run in the energy-saving mode
• To save energy by using a load corresponding to
slower acceleration or deceleration and to a wide
range of constant frequency.
• Set automatic adjustment so as to achieve the
minimum output power of the inverter during
constant-speed operation. Suitable for the load
corresponding to the reducing torque
characteristics of a fan/pump.
• Running with this function needs a setting of 01 for
the energy-saving operation selection [Hb145]. The
response and the accuracy can be adjusted by the
energy-saving response/accuracy adjustment
[Hb146].
Parameter
• Because this function is implemented by relatively
slow control, a rapid change in load, such as an
impact load, may stall the motor and cause an over
current trip
• This function acts when either the V/f control
(constant torque characteristics) or the V/f control
(reducing torque characteristics) is selected.
Item Parameter Data Description
Energy-saving
operation selection
[Hb145]
00: disabled; 01:
enabled Select whether or not to conduct the
energy-saving operation.
Energy-saving
response/accuracy
adjustment
[Hb146] 0~100(%)
Setting Response Accuracy
0
100
Slow
Fast
High
Low
Ｑ
Ａ
！