6
-22
Adjusting Frequency References
Adjusting Analog Frequency References
Gain and bias are among the parameters used to adjust analog inputs.
Related Parameters
Adjusting Analog Frequency Reference Using Parameters
The frequency reference is input from the control circuit terminals using analog voltage and current.
If using frequency reference terminal A1 as an input terminal, perform adjustments using parameters H3-02
and H3-03. If using multi-function analog input terminal A2 as a frequency reference terminal, perform
adjustments using H3-10 and H3-11.
Fig 6.22 Terminals A1 and A2 Inputs
Param-
eter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
LCD Display
H3-02
Frequency reference (volt-
age) terminal A1 input gain
Set the frequency during 10 V input as a percentage, tak-
ing max. output frequency to be 100%.
0.0 to
1000.0
100.0%
Yes
A
Term A1 Lvl Sel
H3-03
Frequency reference (volt-
age) terminal A1 input bias
Set the frequency during 0 V input as a percentage, taking
max. output frequency to be 100%.
-100.0
to
+100.0
0.0%
Yes
A
Terminal A1 Bias
H3-08
Multi-function analog input
terminal A2 signal level selec-
tion
0: 0 to +10V input.
2: 4 to 20 mA (9-bit input).
Switch current and voltage input using the switch S1 on
the control panel.
0 or 2
2
No
A
Term A2 Signal
H3-09
Multi-function analog input
terminal A2 function selection
Select multi-function analog input function for terminal
A2.
0 to 1F
0
No
A
Terminal A2 Sel
H3-10
Multi-function analog input
(current) terminal A2 input
gain
Set the reference capacity for each function during 10 V
(20 mA) input as a percentage.
Set the 100% content function selected using H3-09 to
100%.
0.0 to
1000.0
100.0%
Yes
A
Terminal A2 Gain
H3-11
Multi-function analog input
(current) terminal A2 input
bias
Set the reference capacity for each function during 0 V (4
mA) input as a percentage.
Set the 100% content function selected using H3-09 to
100%.
-100.0
to
+100.0
0.0%
Yes
A
Terminal A2 BIas
Frequency reference
Terminal A1 input
Terminal A1
input voltage
Frequency reference
Terminal A2 input
Terminal A2 input
voltage (current)
