Delta AS Series Operation Manual page 228

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4.9.6.2 Analog Input Wiring
• 4-wired
Volt age input
-
1 0V~ +1 0V
+
+2 4V
-
0 V
Current input
-
20mA ~+ 20 mA
+
+ 24 V
-
0V
*1. Use shielded cables to isolate the analog input signal cable from other power cables.
*2. If the module is connected to a current signal, the terminals Vn and In+ (n=1–2) must be short-circuited.
*3. If variability in the input voltage results in interference within the wiring, connect the module to a capacitor
with a capacitance between 0.1–0.47 μF and a working voltage of 25 V.
*4. The wording "CHX" indicates that very channel can operate with the wiring presented above.
*5. If the environment is severe or there is interferences in 24 V pwer supply, short-circuit AGn (n=1-2) and the
input signal.
* 4
Sh ielded c able *1
CHX
* 3
* 4
CHX
Sh ielded c able *1
* 2
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AG 1
1 MΩ
V1+
25 0Ω
I1 +
INA 1
VI1 -
AG 1
1 MΩ
* 5
SL D
AG 1
A G1
A G2
1 MΩ
V 2+
250 Ω
I 2+
INA 2
VI 2-
AG 2
1 MΩ
* 5
SL D
A G2
A G2
DC/ DC
24 V
Co nv erte r 1
0V
DC/ DC
Conv ert er 2
CH1
A DC1
CH2
A DC2
+1 5V
-15V
AG 1
+1 5V
-1 5V
A G2