Hitachi SH1 Series Basic Manual page 42

Chapter 3
■ Example for adjusting I/O terminals 1
3.9 Adjust the analog input (Ai1/Ai2)
E.g.1) Adjust operation (The frequency reference is set by [Ai1] )
• The frequency reference range corresponding to the analog
input can be set arbitrarily.
Maximum frequency
100%
[Cb-04]
[Cb-03]
(0V/0mA) 0%
[Cb-05] [Cb-06]
◼ Parameter
Parameter
Ai1 Ai2
Set the start frequency when the analog
[Cb-03] [Cb-13] input is [Cb-05]. Set the ratio (%) with the
maximum frequency as 100%.
Set the end frequency when the analog input
[Cb-04] [Cb-14]
is [Cb-06]. Set the ratio (%) with the
maximum frequency as 100%.
Set the start ratio (%) between analog input
[Cb-05] [Cb-15]
0 to 10 VDC/0 to 20 mA.
Set the end ratio (%) between analog input 0
[Cb-06] [Cb-16]
to 10 VDC/0 to 20 mA.
Sets whether the frequency reference from
[Cb-07] [Cb-17]
0% to [Cb-05]/[Cb-15] is set to 0% or
[Cb-03]/[Cb-13].
E.g.2) Fine setting (The frequency reference is set by [Ai1])
• If there is a deviation between the analog input and the
frequency reference in the above [Cb-03] to [Cb-06]
adjustment, fine adjustment is possible as follows.
At this time, set [Cb-03] to [Cb-06] to the default values as
possible. Typically, the gain / bias is adjusted within a few
percent.
Maximum frequency
100(%)
[Cb-31]=110.0(%)
[Cb-30]=10.0(%)
10%
0%
0%
[Cb-30]=0.0(%)
Parallel slide
-10%
[Cb-30]=-10.0(%)
◼
Parameter
Parameter
Ai1 Ai2
Fine adjustment of the analog input 0 V / 20
mA point is performed by adding the bias
[Cb-30] [Cb-32]
value to the frequency reference. Set the
ratio (%) with the Maximum frequency as
100%.
As shown above figure, fine adjustment is
performed by multiplying the slope of the
[Cb-31] [Cb-33]
reference line by the gain. Set the ratio (%)
based on the (Maximum frequency / analog
input (10V / 20mA)) = 100%.
*) The voltage/current input is switched by the slide switch on the
board.
*) For the adjustment of Ai2, read the above parameter Ai1 as Ai2.
Operation Setting and Examples of I/O Adjustment
While setting [Cb-07] = 00,
the frequency reference
from 0% to [Cb-05] will be
set by [Cb-03].
(When [Cb-07] = 01, the
frequency reference from
0% to [Cb-05] is 0Hz)
Analog input (%)
(10V/20mA)
100%
Details
Reference Line
[Cb-31]=100.0(%)
Change the Slope angle
[Cb-31]=90.0(%)
Analog input
10V/20mA = 100(%)
Details
3-5
■ Example for adjusting I/O terminals 2
3.10 Adjust the analog output (Ao1/Ao2/FM)
E.g.)
Adjust operation ([Ao1] outputs the output frequency )
• Adjust the actual analog output by adding the bias [Cd-23] to
the analog output when the output data is 0%.
Analog (10V/20mA)
Or Pulse output (%)
100%
[Cd-23]=50.0(%)
50%
0%
0%
[Cd-23]=0.0(%)
-50% Parallel slide
[Cd-23]=-50.0(%) [Cd-24]= -50.0(%)
・Then, adjust the slope by multiplying the gain [Cd-24] to the
reference line that (Analog output(10V/20mA)/ output data
full scale) is 100%, adjust the analog output when the output
data is 100%.
◼ Parameter
Parameter
Ao1 Ao2
The actual analog output is adjusted
by adding a bias to the analog output
[Cd-23] [Cd-33] when the output data is 0%. Set the
ratio (%) based on analog output
(10V / 20mA) = 100%.
The {analog output (10V / 20mA) /
output data full scale} = 100% is used
[Cd-24] [Cd-34] as the reference line, and the actual
analog output is adjusted by
multiplying the slope by a gain.
• The output form of the FM terminal can select PWM output or
digital frequency output by [Cd-01].
At PWM output, the pulse duty = t/T (%) is constant (T = 6.4
ms), and t/T (%) = 100% at full scale of output data. At digital
frequency output, t/T (%) is fixed at 50%, and the output pulse
frequency at full scale output data is set by [Cd-02].
Parameter
FM
Adjust the actual pulse output by adding a bias to
the pulse output when the output data is 0%.
For PWM output, set the ratio (%) based on the
[Cd-13]
output duty (t/T) (%) = 100%. For digital frequency
output, set the ratio based on [Cd-02] Set
frequency = 100% (%).
{Pulse output (%) /Output data full scale = 100%} is
used as the reference line, and the actual pulse
[Cd-14]
output is adjusted by multiplying the slope by a
gain.
*) Analog output terminals Ao1/Ao2 can be switched to voltage or current
output with the slide Switch on the control circuit terminal.
Factory setting is Ao1=voltage output and Ao2=current output.
*) Adjustment for analog output Ao1/Ao2/FM are set with [Cd-01] to
[Cd-35].
(Note: In Ver2.02 or later, the initial value of Ao2 is 4 to 20 mA current
output, and the [Cd-34] setting value has been changed from 100% to
80%. When using the analog output, be sure to check the related
parameters and the slide switch on the board. )
[Cd-24]=200.0(%) [Cd-24]=100.0(%)
Change
the Slope
Reference Line
angle
Output
range
[Cd-24]=50.0(%)
Output full scale
( For output
frequency, the
maximum
frequency is
100% )
Details
Details