Chapter  2  Analog  Input  Module  AH04AD/AH08AD 
2-17 
  External wiring 
(1)  AH04AD-5A/AH08AD-5A 
Shielded cable*1
Four-wire connection: Voltage input
-10V ~+10V
V0+
I0+
 VI0-
CH0
Shielded cable*1
Two-wire connection: Current input
V2+
I2+
 VI2-
CH2
*3
*2
CH0
1M
CH2
AG
1M
1M
AG
1M
250
250
ZP
 UP
DC24V
DC/DC
converter
+15V
-15V
AG
SG
 SG
*4
*5
+
-
Shiel ded cable*1
Four-wire connection: Current input
-20mA~+20mA
V1+
I1+
 VI1-
CH1
*2
CH1
1M
AG
1M
250
*4
 SG
+
-
+
-
+24V
0V
V3+
I3+
VI3-
CH3
1M
AG
1M
250
CH3
Shielded cable*1
Three-wire connection: Voltage input
+24V
0V
4mA~+20mA
Shielded cable*1
CH4
1M
AG
1M
250
-20mA~+20mA
Three-wrie connection: Current input
+24V
+
-
V4+
I4+
 VI4-
CH4
*2
-10V ~+10V
+24V
+
-
*4
 SG
*4
 SG
*4
 SG
0V
+24V
0V
0V
 
*1. Please use a shielded cable as an analog input cable, and isolate the shielded cable from other power 
cables. 
*2. If current is connected, the connection between Vn+ and In+ needs to be a short circuit. (n is in the range of 
0 to 7.) 
*3. If ripple voltage results in interference with the wiring, please connect a 0.1~0.47 μF and 25 V capacitor. 
*4. Please connect the ground in the shielded cable to the terminal SG. 
*5. Once AH04AD-5A/AH08AD-5A is installed on a backplane, the connection between the terminal SG on 
AH04AD-5A/AH08AD-5A and the terminal 
  on the backplane will be a short circuit. Please connect the 
terminal 
  on the backplane to the ground terminal  .