Adjusting Frequency References
6-35
Adjusting Frequency References
This section explains methods of adjusting frequency references.
îš‹ Adjusting Analog Frequency References
Gain and bias are among the constants used to adjust analog inputs.
Related Constants
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
H3-01
Signal level
selection (ter-
minal A1)
0: 0 to ±10V
1: 0 to ±10V
0 or 1 0 No A A A A 410H
H3-02
Gain (termi-
nal A1)
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 A A 411H
H3-03
Bias (termi-
nal A1)
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 A A 412H
H3-04
Signal level
selection (ter-
minal A3)
0: 0 to ±10V
1: 0 to ±10V
0 or 1 0 No A A A A 413H
H3-05
Multi-func-
tion analog
input (termi-
nal A3) func-
tion selection
Select from the functions listed
in the following table. Refer to
the next page.
0 to 1F 1F No A A A A 414H
H3-06
Gain (termi-
nal A3)
Sets the input gain (level) when
10V is input.
Set according to the 100% value
selected from H3-05.
0.0 to
1000.0
100.0% Ye s A A A A 415H
H3-07
Bias (termi-
nal A3)
Sets the input gain (level) when
0 V is input.
Set according to the 100% value
selected from H3-05.
-100.0
to
+100.0
0.0% Yes A A A A 416H
H3-08
Signal level
selection
(terminal A2)
0: 0 to +10V, with lower limit
1: without lower
limit
2: 4 to 20 mA
Switch current and voltage
input using the switch on the
control panel.
0 to 2 2 NoAAAA417H
H3-09
Multi-func-
tion analog
input (termi-
nal A2) func-
tion selection
Select multi-function analog
input function for terminal A2.
Refer to the next table.
0 to 1F 0 No A A A A 418H
H3-10
Gain (termi-
nal A2)
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.
0.0 to
1000.0
100.0% Yes A A A A 419H
H3-11
Bias (termi-
nal A2)
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.
-100.0
to
+100.0
0.0% Yes A A A A 41AH
0 to ±10V