Omron VARISPEED G7 -, Instruction Manual

Page: 298 / 417

Individual Functions
6-
103
Energy-saving
To perform energy saving, set b8-01 (Energy Saving Mode Selection) to 1. Energy-saving control can be per-
formed using both V/f control and open-loop vector control. The constants to be adjusted are different for
each. In V/f control, adjust b8-04 to b8-06, and in vector control, adjust b8-02 and b8-03.
Related Constants
* 1. The factory setting is 1.0 when using V/f control with PG.
* 2. The factory setting is 2.00 s when Inverter capacity is 55 kW min. The factory setting will change when the control method is changed. (Open-loop vec-
tor 1 factory settings are given.)
* 3. The same capacity as the Inverter will be set by initializing the constants.
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
b8-01
Energy-saving
mode selection
Select whether to enable or dis-
able energy-saving control.
0: Disable
1: Enable
0 or 1 0 No A A A A A
Energy Save
Sel
b8-02
Energy-saving
gain
Set the energy-saving gain with
the open-loop vector control
method.
0.0 to
10.0
0.7
*1
Yes No No A A A
Energy Save
Gain
b8-03
Energy-saving
filter time con-
stant
Set the energy-saving filter time
constant with the open-loop vec-
tor control method.
0.00 to
10.0
0.50 s
*2
Yes No No A A A
Energy Save
F.T
b8-04
Energy-saving
coefficient Set the maximum motor effi-
ciency value.
Set the motor rated capacity in
E2-11, and adjust the value by 5%
at a time until output power
reaches a minimum value.
0.0 to
655.00
*3
*4
No A A No No No
Energy Save
COEF
b8-05
Power detection
filter time con-
stant
Set the time constant for output
power detection. 0 to
2000
20 ms No A A No No No
kW Filter Time
b8-06
Search opera-
tion voltage
limiter Set the limit value of the voltage
control range during search opera-
tion.
Perform search operation to opti-
mize operations using minute
variations in voltage using
energy-saving control. Set to 0 to
disable the search operation.
100% is the motor base voltage.
0 to 100 0% No A A No No No
Search V Limit
E2-02
Motor rated slip Sets the motor rated slip in Hz
units.
These set values will become the
reference values for slip compen-
sation.
This constant is automatically set
during autotuning.
0.00 to
20.00
2.90 Hz
*4
No A A A A A
Motor Rated
Slip
E2-11
Motor rated
output
Set the rated output of the motor
in units of 0.01 kW.
This constant is automatically set
during autotuning.
0.00 to
650.00
0.40
*3
No Q Q Q Q Q
Mtr Rated
Power