Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Energy saving operation and energy saving monitor
FR-A700 EC 6 - 359
6.18 Energy saving operation and energy saving monitor
6.18.1 Energy saving control and optimum excitation control (Pr. 60) )
Without a fine parameter setting, the inverter automatically performs energy saving operation.
This inverter is optimum for fan and pump applications.
When parameter is read using the FR-PU04, a parameter name different from an actual
parameter is displayed.
Energy saving operation mode (Pr. 60 = 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. This inverter is appropriate for
machines, such as a fan and a pump, which operate for long hours at a constant speed.
Purpose Parameters that must be set
Refer to
Section
Energy saving operation Energy saving operation and optimum
excitation control Pr. 60 6.18.1
How much energy can be saved Energy saving monitor Pr. 52,
Pr. 54, Pr. 158,
Pr. 891–Pr. 899 6.18.2
Pr.
No.
Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
60
Energy saving control
selection
0 0 Normal operation mode —
4 Energy saving operation mode
NOTE
For applications a large load torque is applied to or machines repeat frequent acceleration/
deceleration, an energy saving effect is not expected.
When the energy saving mode is selected (parameter 60 = 4 ), deceleration time may be
longer than the setting value. Since over voltage alarm tends to occur as compared to the
constant torque load characteristics, set a longer deceleration time.
The energy saving operation mode and optimum excitation control function only under V/f
control. When a value other than "9999" is set in Pr. 80 "Motor capacity (simple magnetic
flux vector control)", the energy saving mode and optimum excitation control are invalid.
The energy saving operation mode functions only under V/f control. When the advanced
magnetic flux vector control, real sensorless vector control and vector control are selected,
the energy saving mode is invalid.
Since output voltage is controlled in energy saving operation mode and by optimum excita-
tion control, output current may slightly increase.
V/F V/F V/F