Model 493.02 Controller Service
Model 493.40 I/O Carrier Connections
Cabling
52
Analog I/O Connections
The Model 493.45 A/D and Model 493.46 D/A daughter boards are
installed in the Model 493.40 I/O Carrier front panel module.
Note The external analog source can be a stand-alone function generator,
another controller, or a computer controlled analog output.
Analog inputs The analog-to-digital daughter cards accommodate up to six analog
input signals.
• Each A/D input signal must be
within ±10 volts.
• Use pin 3 or 6 to prevent
problems with floating grounds
between devices.
+
-
+
-
+
-
Input 1
Analog
Ground
Input 2
Analog
Ground
Input 3
Input 4
Input 5
Input 6
+
-
+
-
+
-
+
-
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
J4 - J7
To
A/D
From
493.75 A/D
Module