Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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16. (G) Control Parameters
16.4 Energy saving control
16.4
Energy saving control
The inverter will automatically perform energy saving operation without setting detailed parameters.
This control method is suitable for applications such as fans and pumps.
 Optimum excitation control (Pr.60 = "9")
• Setting Pr.60 = "9" will select the Optimum excitation control.
• The Optimum excitation control is a control method to decide the output voltage by controlling the excitation current so the
efficiency of the motor is maximized.
• Energy saving operation will be enabled under V/F control.
NOTE
• In the Optimum excitation control mode, an energy saving effect is not expected when the motor capacity is extremely small
compared with the inverter capacity or when multiple motors are connected to a single inverter.
• When the Optimum excitation control mode is selected, the deceleration time may become longer than the setting value. Also,
it may cause overvoltage more often compared to constant-torque load characteristics, so set the deceleration time longer.
• When the motor becomes unstable during the acceleration, set the acceleration time longer.
• Output current may increase slightly with the energy saving operation mode or the Optimum excitation control mode since the
output voltage is controlled.
V/F V/F V/F
Pr. Name Initial value Setting range Description
60
G030 Energy saving
control selection
0
0 Normal operation
9 Optimum excitation control