Energy Saving Operation (Pr. 60); Energy Saving Operation Mode (Setting "4"); Optimum Excitation Control Mode (Setting "9") - Mitsubishi Electric FR-F700 Series Instruction Manual

4.5 Energy saving operation (Pr. 60)

Without a fine parameter setting, the inverter automatically performs energy saving operation.
This inverter is appropriate for fan and pump applications
Parameter
Number
60 Energy saving control selection
4.5.1

Energy saving operation mode (setting "4")

· When "4" is set in Pr. 60, the inverter operates in the energy saving operation mode.
· In the energy saving operation mode, the inverter automatically controls the output voltage to minimize the
inverter output voltage during a constant operation.
REMARKS
· When the energy saving mode is selected, the Pr. 0 Torque boost and Pr. 14 Load pattern selection settings are made invalid to
automatically control the output voltage.
· For applications a large load torque is applied to or machines repeat frequent acceleration/deceleration, an energy saving
effect is not expected.
4.5.2

Optimum excitation control mode (setting "9")

· When "9" is set in Pr. 60, the inverter operates in the optimum excitation control mode.
· The optimum excitation control mode is a control system which controls excitation current to improve the motor
efficiency to maximum and determines output voltage as an energy saving method.
REMARKS
· When the motor capacity is too small as compared to the inverter capacity or two or more motors are connected to one
inverter, the energy saving effect is not expected.
CAUTION
· When the energy saving mode and optimum excitation control mode are selected, deceleration time may be longer than the
setting value. Since overvoltage alarm tends to occur as compared to the constant torque load characteristics, set a longer
deceleration time.
· The energy saving mode and optimum excitation control functions only under V/F control.
When a value other than "9999" is set in Pr. 80 Motor capacity (simple magnetic flux control), the energy saving mode and
optimum excitation control does not function.
(For simple magnetic flux vector control, refer to the Instruction Manual (applied).)
POINT
When you want to check the energy saving effect, refer to the Instruction Manual (applied) to check the energy
saving effect monitor.
Initial
Name
Value
0
Energy saving operation (Pr. 60)
Setting
Remarks
Range
0 Normal operation mode
4 Energy saving operation mode
9 Optimum excitation control mode
4
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