Energy-Saving - Omron VARISPEED G7 Instruction Manual

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