54
Energy saving operation (Pr. 60)
4.6 Energy saving operation (Pr. 60)
4.6.1
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.
4.6.2
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.
Without a fine parameter setting, the inverter automatically performs energy saving operation.
This inverter is appropriate for fan and pump applications
Parameter
Number
Name
Initial
Value
Setting
Range
Remarks
60
Energy saving control selection
0
0
Normal operation mode
4
Energy saving operation mode
9
Optimum excitation control mode
REMARKS
· For applications a large load torque is applied to or machines repeat frequent acceleration/deceleration, an energy saving
effect is not expected.
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.
Summary of Contents for FR-F 700 EC
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