10
SI-I/O User Guide
Issue Number: 3
5 Electrical installation
5.1
Terminal descriptions
Table 5.1 SI-IO terminal descriptions
Table 5.2 11 way user connector and relay pin numbering
5.2
Wiring, shield connections
To prevent noise being induced onto any of the analog inputs or outputs, it is advisable to use twisted pair cable shielded with an overall outer shield.
The shield connections should be terminated at one of the zero volt terminals on the Option module, and to the zero volt connection of the signal
source. The termination of the shield should be kept as short as possible to prevent and noise being induced in this area.
Figure 5-1 Shield connections
PL1
Function
PL2
Function
T1
0 V common
T21
Relay 1
T2
Digital input/output 1
T22
Relay common
T3
Digital input/output 2
T23
Relay 2
T4
Digital input/output 3
3 way 5.08 mm plugable screw connector
T5
Digital input/output 4
T6
0 V common
T7
Analog input 1/digital input 5
T8
Analog input 2/digital input 6
T9
Analog input 3/digital input 7
T10
0 V common
T11
Analog output 1/digital input 8
11 way 3.81 mm plugable screw connector
1
2
3
4
5
6
7
8
9
PL1
10
11
21
22
23
PL2
+
0V
+
0V
+
0V
+
0V
+
Analog Input 1
Analog Input 2
Analog Input 3
Analog Output 1
0V Common
0V Common
0V Common
0V Common
-
0V
0V Common
Differential Analog Input +
Differential Analog Input -