Functions - Hitachi L100 Series Instruction Manual

3–10
"A" Group: Standard Functions
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 –10V) 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.
In the graph below (left), A_13 and A_14 select the active portion of the input voltage or
current range. The parameters A_11 and A_12 select the start and end frequency of the
converted output frequency range, respectively. Together, these four parameters define a
line segment as shown (below, right). When the line does not begin at the origin, A_15
defines whether the inverter outputs 0Hz or the A_11 frequency when the analog input
value is less than the A_13 setting (determines the non-linear part of the translation).
Frequency
A 12
A 11
0
0V
4mA
Func. Name /
Code SRW Display
A_11 O/OI–L input active
range start frequency
IN EXS
A_12 O/OI–L input active
range end frequency
IN EXE
A_13 O/OI–L input active
range start voltage
IN EX%S
A_14 O/OI–L input active
range end voltage
IN EX%E
A_15 O/OI–L input start
frequency enable
IN LEVEL
10V
A 13 A 14
20mA
% Input scale
"A" Function
Description
The output frequency corre-
sponding to the analog input
range starting point
000.0Hz
The output frequency corre-
sponding to the analog input
range ending point
000.0Hz
The starting point (offset) for
the active analog input range
000%
The ending point (offset) for
the active analog input range
100%
Two options; select codes:
00 ...Use offset (A_11 value)
01 ...Use 0 Hz
0Hz
Frequency
A 12
A_15 = 00
A 11
0
%
0V
A 13
4mA
% Input scale
Run
Mode
Edit
✘
✘
✘
✘
✘
A_15 = 01
%
10V
A 14
20mA
Defaults
–FE –FU –FR
Units
(CE) (UL) (Jpn)
0.0 0.0 0.0
0.0 0.0 0.0
0 0 0
100 100 100
01 01 01
Hz
Hz
%
%
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