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
1-153
z Mode 4 (H’0004): 0~300 Ω
3000
300
Ω
Digital output
Measured input
impedance
0
Mode 1, 3 of CR#2~ CR#5 0 ~ 300 Ω (0~3000)
Offset (CR#34 ~ CR#37) Offset value
„
Adjusting PT Conversion Curve
1. Description
y
If there are deviations in the measurement results, make adjustments to the Offset
value to modify the conversion curve. For example, if the temperature deviation from
the target temperature (measured temperature) is -2°C, set the Offset of CH1 to 2°C
(2°C /0.1°C = 20).
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
°
°
=
Offset
X
Y
) C ( 1 . 0
) C (
Example: If X= -2
°
C, Y=?
0 20
) C ( 1 . 0
) C ( 2
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
+
°
° −
=
Y
y
You only need to configure the PT conversion curve for once. Then configure CR#40
to prevent configuration changes.
2. Addresses
y
X0 = On: Set the input mode for CH1 to mode 0.
y
X1 = On: Set the Offset value of CH1 to 2°C (20).
y
M0 = On: Disable CH1 configuration changes.
3. Program description
y
When X0 = On, set CR#2 to K0 (H’0000), i.e. CH1 to mode 0 (PT100 mode).
y
When X1 = On, write K20 (Offset value for CH1) into CR#28.
y
When X1 goes from On to Off, set M0 = On to disable changes to the PT conversion
curve. Write K1 (H’1) into CR#40 b0=1.