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
1-105
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Adjusting D/A Conversion Curve in Voltage Output Mode
1. Description
y
CH1 example, when CR#2 is configured for voltage output mode (mode 0), the
Offset value will be set to 0V (0) and the Gain value to 5V (5V/0.3215mV=16,000), i.e.
the output voltage -10V ~ 10V will correspond to decimal values -32,000 ~ +32,000.
y
If the default voltage output mode (mode 0) is not appropriate for the application,
make adjustments to the D/A conversion curve according to the application
requirements. For example, set the Offset for CH1 to 2V (2V/0.3215mV=6,400) and
the Gain to 6V (6V/0.3215mV=19,200).
( )
( )
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
− ×
=
32000
) ( 10
16000
V
Offset
Offset Gain X
V Y
Example: If X=16000, Y=?
( )
( )
) ( 6
32000
) ( 10
6400
16000
6400 19200 16000
V
V
V Y
=
⎟
⎠
⎞
⎜
⎝
⎛
×
⎥⎦
⎤
⎢⎣
⎡
+
− ×
=
y
The D/A conversion curve only needs to be set up once. Use CR#40 to protect these
settings.
2. Addresses
y
X0 = On: Set the output mode of CH1 to mode 0.
y
X1 = On: Set the Offset value of CH1 to 2V (6,400) and the Gain value to 6V
(19,200).
y
M0 = On: Disable modifying CH1 configuration values.
3. Program Description
y
When X0 = On, set CR#2 to K0 (H’0000) and configure CH1 for mode 0 (voltage
output mode).
y
When X1 = On, write K6,400 (Offset value for CH1) into CR#28 and K19,200 (Gain
value for CH1) into CR#34.
y
When X1 goes from On to Off, set M0 = On to disable modifications to the D/A
conversion curve. Write K1 (H’1) into CR#40 b0=1 to disable CH1.