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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
Con-
Name
stant
Number
Signal level
H3-01
selection (ter-
minal A1)
Gain (termi-
H3-02
nal A1)
Bias (termi-
H3-03
nal A1)
Signal level
H3-04
selection (ter-
minal A3)
Multi-func-
tion analog
H3-05
input (termi-
nal A3) func-
tion selection
Gain (termi-
H3-06
nal A3)
Bias (termi-
H3-07
nal A3)
Signal level
H3-08
selection
(terminal A2)
Multi-func-
tion analog
H3-09
input (termi-
nal A2) func-
tion selection
Gain (termi-
H3-10
nal A2)
Bias (termi-
H3-11
nal A2)
Description
0: 0 to 10 V
−
1:
10 to 10 V
Sets the frequency when 10 V is
input. as a percentage of the
maximum output frequency.
Sets the frequency when 0 V is
input, as a percentage of the
maximum frequency.
0: 0 to 10 V
−
1:
10 to 10 V
Select from the functions listed
in the following table. Refer to
the next page.
Sets the input gain (level) when
10V is input.
Set according to the 100% value
selected from H3-05.
Sets the input gain (level) when
0 V is input.
Set according to the 100% value
selected from H3-05.
0: 0 to +10V, with lower limit
−
1:
10 to 10 V
without lower
limit
2: 4 to 20 mA
Switch current and voltage
input using the switch on the
control panel.
Select multi-function analog
input function for terminal A2.
Refer to the next table.
Sets the input gain (level) when
10 V (20 mA) is input.
Set according to the 100% value
for the function set for H3-09.
Sets the input gain (level) when
0 V (4 mA) is input.
Set according to the 100% value
for the function set for H3-09.
Adjusting Frequency References
Control Methods
Change
Setting
Factory
during
Range
Setting
Opera-
V/f
tion
0 or 1
0
No
A
0.0 to
100.0%
Yes
A
1000.0
-100.0
to
0.0%
Yes
A
+100.0
0 or 1
0
No
A
0 to 1F
1F
No
A
0.0 to
100.0%
Yes
A
1000.0
-100.0
to
0.0%
Yes
A
+100.0
0 to 2
2
No
A
0 to 1F
0
No
A
0.0 to
100.0%
Yes
A
1000.0
-100.0
to
0.0%
Yes
A
+100.0
MEMO
Open
BUS
V/f
Flux
Loop
Regis-
with
Vec-
Vec-
ter
PG
tor
tor
A
A
A
410H
A
A
A
411H
A
A
A
412H
A
A
A
413H
A
A
A
414H
A
A
A
415H
A
A
A
416H
A
A
A
417H
A
A
A
418H
A
A
A
419H
A
A
A
41AH
35
6-
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