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Page 9
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INSTALLATION
D048-50-880 Issue E
The pins on the AIGX connector are used as shown in
. The specification of the electrical supply, d.c. relay
and back EMF suppression diode are given in
.
The connection to Pin 8 is optional. Make the connection to Pin 8 if you want to connect the set-point output signal
to a d.c. relay. You must connect a suppression diode between pins 8 and 1 to protect the AIGX from transient voltage
generated when the d.c. relay is switched off.
3.3.3
Maximum Cable Length
The maximum cable length is dependent on the conductor cross-section and the supply voltage used. The following
maximum cable lengths are recommended:
The common mode signal voltage (that is, the voltage between signal common and supply common) could be as much
as 2.5 V with long cables due to the voltage drop in the supply cable. You should ensure that the signal voltage
measurement will operate correctly.
Table 1 - Pins On the AIGX Connector
Pin No.
Use
1
Supply positive
2
Supply common
3
Signal output
4
ID resistor
5
Signal common
6
Degas enable
7
Gauge enable
9
Set-point output
Table 2 - Maximum Recommended Cable Length
Conductor Cross-Cection
24 V Supply
15 V Supply
24 awg
30 m
0.5 m
28 awg
10 m
1 m
