Hitachi X200 Series - Manual (Page 87)

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 setting adjust the curve
characteristics between the analog input and the frequency output.
Please note that you cannot use the [O] and [OI] input at the same time.
Adjusting [O-L] characteristics – In the
graph to the right, A013 and A014 select the
active portion of the input voltage range.
Parameters A011 and A012 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 (A011 and A013 > 0),
then A015 defines whether the inverter
outputs 0Hz or the A011-specified frequency
when the analog input value is less than the
A013 setting. When the input voltage is
greater than the A014 ending value, the
inverter outputs the ending frequency
specified by A012.
Adjusting [OI-L] characteristics – In the
graph to the right, A103 and A104 select the
active portion of the input current range.
Parameters A101 and A102 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 (A101 and A103 > 0),
then A105 defines whether the inverter
outputs 0Hz or the A101-specified frequency
when the analog input value is less than the
A103 setting. When the input voltage is
greater than the A104 ending value, the
inverter outputs the ending frequency
specified by A102.
Adjusting integrated POT characteristics – Refer to the parameter A151~A155.
Max frequency
A012
A011
A014 100%
0V 10V
A013 0%
A015=00
A015=01
0
Input scale
%
Max frequency
A102
A101
A104 100%
0 20mA
A103 0%
A105=00
A105=01
0
Input scale
%
3−13
Confi
guri
ng Driv
e
Parameters