OMRON Sysdrive 3G3HV - Detector Cooling Section

Energy-saving Mode
The Inverter in energy-saving mode will automatically save unnecessary power
supply to the motor if the load is light and the motor is a standard motor or dedicated
motor for inverters.
The Inverter in energy-saving mode will estimate the load factor of the motor
from the current consumption of the motor and controls the output voltage to
supply only necessary power if the load is light.
The longer the energy-saving time of the Inverter is, the more effectively the
power supplied to the load is saved. The power supplied to the load will be
hardly saved if the load exceeds 70% of the rated output torque of the motor.
The Inverter in energy-saving mode cannot save unnecessary power supply to
special motors, such as spindle motors and submersible motor.
Refer to the following for the settings of the Inverter enabling it to perform energy-saving
control.
Energy-saving Control
The following are the energy-saving control steps of the Inverter.
The Inverter starts accelerating the motor normally. The Inverter does not perform energysaving
control while the Inverter is accelerating the motor.
The Inverter will perform energy-saving control when the output frequency corresponds to
the frequency specified by the frequency reference.
The Inverter calculates the ideal output voltage from the running condition of the Inverter
and the energy-saving coefficient K2 set with n096.
The output voltage is changed to the ideal output voltage.
The Inverter uses the auto-tuning function (search operation) to find the minimum output
power that the Inverter supplies to the motor.
Auto-tuning function (search operation):
Finds the minimum output power that the Inverter supplies to the motor by changing the
output voltage with the auto-tuning voltage steps set with n101 and n102.
The Inverter starts decelerating the motor normally. The Inverter does not perform energysaving
control while the Inverter is decelerating the motor.
The most efficient input voltage imposed on the motor varies with the
load factor of the motor. The Inverter in energy-saving mode calculates
the ideal output voltage and adjusts the ideal output voltage so that the
actual power supplied to the motor can be minimized.
Power
consumption
Load factor: 100%
Load factor: 50%
Motor voltage