Hitachi WJ200-001S Instruction Manual page 101

316
Analog Input Settings
The inverter has the capability to accept an external analog input that can command
the output frequency to the motor. Voltage input (0-10 V) and current input (4-20mA)
are available on separate terminals ([O] and [OI] respectively). Terminal [L] serves as
signal ground for the two analog inputs. The analog input settings adjust the curve
characteristics between the analog input and the frequency output.
Adjusting [O-L] characteristics – In the
graph to the right,  and  select the
active portion of the input voltage range.
Parameters  and  select the start
and end frequency of the converted output
frequency range, respectively. Together,
these four parameters define the major line
segment as shown. When the line does not
begin at the origin ( and  > 0), then
 defines whether the inverter outputs
0Hz or the -specified frequency when
the analog input value is less than the 
setting. When the input voltage is greater
than the  ending value, the inverter
outputs the ending frequency specified by
.
Adjusting [OI-L] characteristics – In the
graph to the right,  and  select the
active portion of the input current range.
Parameters  and  select the start
and end frequency of the converted output
frequency range, respectively. Together,
these four parameters define the major line
segment as shown. When the line does not
begin at the origin ( and  > 0), then
 defines whether the inverter outputs
0Hz or the -specified frequency when
the analog input value is less than the 
setting. When the input voltage is greater
than the  ending value, the inverter
outputs the ending frequency specified by
.
If [AT] is not assigned to any of the intelligent input terminal, inverter recognizes the
input [O]+[OI].
Adjusting [VR-L] characteristics – This is used when an optional operator is used.
Refer to parameters  ~  for the details.
Max frequency

=
=

0
0%
 
0V
Input scale
Max frequency

=
=

0
0%
 
0
Input scale
%
100%
10V
%
100%
20mA