YASKAWA G7 Series User Manual

Individual Functions
6-107
 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 parameters 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 Parameters
* 1. Set to 1.0 in Vector Control Mode with PG.
* 2. Initial settings vary based on drive capacity and control mode.
* 3. Caution: Initial settings will vary based on motor capacity
* 4. Initial/Default settings vary based on drive capacity. Values shown here are for 200-240V class 0.4kW drives.
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
b8-01
Energy Saving
Control
Selection
Energy Savings function enable/
disable selection.
0: Disabled
1: Enabled
0 or 1 0 No A A A A A
Energy Save
Sel
b8-02
Energy Saving
Gain
Sets energy savings control gain
when in vector control mode.
0.0
to
10.0
0.7
*1
YesNoNoAAA
Energy Save
Gain
b8-03
Energy Saving
Control Filter
Time Constant
Sets energy saving control filter
time constant when in vector
control mode.
0.00
to
10.0
0.50sec
*2
YesNoNoAAA
Energy Save
F.T
b8-04
Energy Saving
Coefficient
Val ue
Used to fine-tune the energy
savings function when in V/f
Control Mode.
0.0
to
655.00
*3
*4
No A A No No No
Energy Save
COEF
b8-05
Power
Detection Filter
Time
Used to fine-tune the energy
savings function when in V/f
Control Mode.
0
to
2000
20ms No AANoNoNo
kW Filter Time
b8-06
Search
Operation
Voltage Limit
Used to fine-tune the energy
savings function when in V/f
Control Mode.
0 to 100 0% No A A No No No
Search V Limit
E2-02
Motor Rated
Slip
Sets the motor rated slip in hertz
(Hz). This value is automatically
set during rotational
Auto-Tuning.
0.00
to
20.00
2.90Hz
*4
NoAAAAA
Motor Rated
Slip
E2-11
Motor Rated
Output
Sets the motor rated power in
kilowatts (kW). This value is
automatically set during
Auto-Tuning. 1HP = 0.746kW
0.00
to
650.00
0.40kW
*3
NoQQQQQ
Mtr Rated
Power
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YASKAWA G7 Series Specifications

General

Series	G7
Frequency	50/60 Hz
Output Voltage	Matches Input Voltage
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheating, Short Circuit
Communication	RS-485, Modbus, DeviceNet, Profibus, Ethernet
Safety	Safe Torque Off (STO)
Operating Temperature	-10°C to 50°C
Humidity	5% to 95% (non-condensing)
Cooling Method	Fan Cooled
Enclosure Rating	IP20
Storage Temperature	-20°C to 65°C