Adjusting Frequency References
6-
15
Adjusting Frequency References
This section explains methods of adjusting frequency references.
Adjusting Analog Frequency References
Gain and bias are among the constants used to adjust analog inputs.
Related Constants
Constant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control
Methods
MEMOBUS
Register
Open-
loop
Vector
Flux
Vector
Display
H3-01
Signal level selection
(terminal AI1)
0: 0 to 10 V
1: -10V to 10 V
0 or 1
0
No
A
A
450H
Term AI1 Signal
H3-02
Gain (terminal AI1)
Sets the frequency when 10 V
is input, as a percentage of the
maximum output frequency.
0.0 to
1000.0
100.0%
Yes
A
A
451H
Term AI1 Gain
H3-03
Bias (terminal AI1)
Sets the frequency when 0 V is
input, as a percentage of the
maximum frequency.
-100.0
to
100.0
0.0%
Yes
A
A
452H
Term AI1 Bias
H3-04
Signal level selection
(terminal AI2)
0: 0 to 10 V
1: -10 V to 10 V
0 or 1
0
No
A
A
453H
Term AI2 Signal
H3-05
Multi-function analog
input
(terminal AI2)
Select multi-function analog
input function for terminal AI2.
0 to
1FH
1FH
No
A
A
454H
Term AI2 Sel
H3-06
Gain (terminal AI2)
Sets the input gain (level) when
terminal AI2 is 10V. Set
according to the 100% value
selected in H3-05.
0.0 to
1000.0
100.0%
Yes
A
A
455H
Term AI2 Gain
H3-07
Bias (terminal AI2)
Sets the input gain (level) when
terminal AI2 is 0V. Set accord-
ing to the 100% value selected
in H3-05.
-100.0
to
100.0
0.0%
Yes
A
A
456H
Term AI2 Bias
H3-08
Signal level selection
(terminal AI3)
0: 0 to 10V
1: -10V to 10V
0, 1
0
No
A
A
457H
Term AI3 Signal
H3-09
Multi-function analog
input
(terminal AI3)
Select multi-function analog
input
function for terminal AI3.
00 to
1FH
0FH
No
A
A
458H
Term AI3 Sel
H3-10
Gain (terminal AI3)
Sets the input gain (level) when
terminal AI3 is 10 V.Set
according to the 100% value
selected in H3-09.
0.0 to
1000.0
100.0%
Yes
A
A
459H
Term AI3 Gain
H3-11
Bias (terminal AI3)
Sets the input gain (level) when
terminal AI3 is 0 V.Set accord-
ing to the 100% value selected
in H3-09.
-100.0
to
100.0
0.0%
Yes
A
A
45AH
Term AI3 Bias
