User Constant Tables
5-
19
Energy Saving: b8
User constants for energy-saving control functions are shown in the following table.
* 1. The factory setting is 1.0 when using flux vector control.
* 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. The open-loop vector 1 factory setting is given.
* 3. By setting E2-11 (Motor rated output) the appropriate value will be set.
* 4. The factory setting depends on the Inverter capacity. The value for a 200 V Class Inverter of 0.4 kW is given.
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Regis-
ter
Page
Display
V/f
V/f
with
PG
Open
Loop
Vec-
tor
1
Flux
Vec-
tor
Open
Loop
Vec-
tor
2
b8-01
Energy-sav-
ing mode
selection
Select whether to enable or
disable energy-saving con-
trol.
0: Disable
1: Enable
0 or 1
0
No
A
A
A
A
A
1CCH 6-115
Energy Save
Sel
b8-02
Energy-sav-
ing 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
1CDH 6-115
Energy Save
Gain
b8-03
Energy-sav-
ing filter time
constant
Set the energy-saving filter
time constant with the open-
loop vector control method.
0.00 to
10.0
0.50 s
*2
Yes
No
No
A
A
A
1CEH 6-115
Energy Save
F.T
b8-04
Energy-sav-
ing coeffi-
cient
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
288.20
*3 *4
No
A
A
No
No
No
1CFH 6-115
Energy Save
COEF
b8-05
Power detec-
tion filter
time constant Set the time constant for out-
put power detection.
0 to
2000
20 ms
No
A
A
No
No
No
1D0H 6-115
kW Filter
Time
b8-06
Search opera-
tion voltage
limiter
Set the limit value of the volt-
age control range during
search operation.
Perform search operation to
optimize 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
1D1H 6-115
Search V
Limit
