Using Energy-Saving Control Mode - YASKAWA VS-606V7 Series Instruction Manual

Using Energy-saving Control Mode

Verify that the constant n002 is set to 0 (V/f control mode) when per-
forming energy-saving control. Setting n139 to 1 enables the energy-
saving control function.
Energy-saving Control Selection (n139)
Constant
No.
Energy-saving
n139
control selection
Normally it is not necessary to change the setting. However, if the
motor characteristics are different from a Yaskawa standard motor, refer
to the description below and change the constant setting accordingly.
• Energy-saving Control Mode (n140, n158)
Calculates the voltage for the best motor efficiency when operating in
energy-saving control mode. The calculated voltage becomes the out-
put voltage reference. The factory setting is set to the max. applicable
motor capacity of a Yaskawa standard motor.
The greater the energy-saving coefficient is, the greater the output volt-
age becomes.
When using a motor other than a Yaskawa standard motor, set the
motor code corresponding to the voltage and capacity to n158. Then,
change the setting of the energy-saving coefficient K2 (n140) by 5% so
that the output power becomes the smallest.
When the motor code is set to n158, the energy-saving coefficient K2,
which corresponds to the motor code, is set to n140.
Constant
No.
Energy-saving control
n140
coefficient K2
Motor code
n158
*Changes depending on inverter capacity.
Name Unit
–
Name Unit
–
–
Setting
Range
0 : Disabled
1 : Enabled
Setting
Range
0.0 to 6550
0 to 70
Initial
Setting
0
Initial
Setting
*
*
101