Eaton ELCM Series, Руководство по эксплуатации

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3. AIAO Units
MN05003006E F or more information visit:
w w w. e a t o n . c o m
1-135
curve. Write K16 (H’10) into CR#40 b4=1.
4. Program example
Ladder diagram: Explanation:
Set CH5 to mode 0 (voltage
output mode)
Set the Offset value for CH5
Set the Gain value for CH5
Disable CH5 configuration
changes
X0
M0
X1
K0 K38 K1
K0 K40 K1
K0 K1 TOP
K0 K1
M0
TOP
TOP
TOP
X1
SET
H0
K6400
K19200
H10
K6
K32
„
Adjusting D/A Conversion Curve in Current Output Mode 1 and Mode 2
1. Description
y
CH6 example. When CR#7 is set to current output mode (mode 1), the Offset value
will be set to 0mA (0) and the Gain value to 10mA (10mA/0.625 μ A=16,000), i.e.
output current 0mA ~ +20mA will correspond to values 0 ~ +32,000.
y
When CR#7 is set to current output mode (mode 2), the Offset value will be set to
4mA (4mA/0.625 μ A=6,400) and the Gain value to 12mA (12mA/0.625 μ A=19,200),
i.e. input current 4mA ~ +20mA will correspond to values 0 ~ +32,000.
y
If the default current output modes (mode 1 and mode 2) do not meet the application
requirements, make adjustments to the D/A conversion curve. For example, set the
Offset for CH6 to 6mA (6mA/0.625 μ A=9,600) and the Gain to 13mA
(13mA/0.625 μ A=20,800).
( )
( )
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
− ×
=
32000
) ( 20
16000
mA
Offset
Offset Gain X
mA Y
Example: If X=16000, Y=?
( )
( )
) ( 13
32000
) ( 20
9600
16000
9600 20800 16000
mA
mA
mA Y
=
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
− ×
=
2. Addresses
y
X0 = On: Set the output mode for CH6 to mode 1.
y
X1 = On: Set the Offset value of CH6 to 6mA (9,600) and the Gain value to 13mA
(20,800).