Adjusting Frequency References
6-
25
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.
Adjustment can be made using H3-06 and H3-07 when multi-function analog input terminal A3 is used as a
frequency reference terminal.
Fig 6.24 Terminals A1 and A2 Inputs
H3-08
Terminal A2
Signal Level
Selection
Selects the signal level of
terminal A2.
0: 0 to 10Vdc (switch S1-2 must
be in the OFF position).
1: -10 to +10Vdc (switch S1-2
must be in the OFF position).
2: 4 to 20mA (switch S1-2 must
be in the ON position)
Note: Switch between current or
voltage inputs by using (S1-2)
switch on the terminal board.
0 to 2
2
No
A
A
A
A
A
Term A2 Signal
H3-09
Terminal A2
Function
Selection
Selects the function of terminal
A2.
Same choices as Terminal A3
Function Selection (H3-05).
0 to 1F
0
No
A
A
A
A
A
Terminal A2
Sel
H3-10
Terminal A2
Gain Setting
Sets the output level when 10V is
input.
0.0
to
1000.0
100.0%
Yes
A
A
A
A
A
Terminal A2
Gain
H3-11
Terminal A2
Bias Setting
Sets the output level when 0V is
input.
-100.0
to
100.0
0.0%
Yes
A
A
A
A
A
Terminal A2
Bias
H3-12
Analog Input
Filter Time
Constant
This parameter adjusts the filter
on all 3 analog inputs. Increase to
add stability, decrease to improve
response.
0.00
to
2.00
0.03sec
No
A
A
A
A
A
Filter Avg Time
Parameter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Operation
Control Methods
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vector
Open
Loop
Vector
2
Frequency reference
Terminal A1, A3 input
Terminal A1 (A3)
input voltage
Frequency reference
Terminal A2 input
Terminal A2 input
voltage (current)
(H3-06)
(H3-07)
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