© Edwards Limited 2013. All rights reserved. Page 9
Edwards and the Edwards logo are trademarks of Edwards Limited.
INSTALLATION
D048-50-880 Issue E
The pins on the AIGX connector are used as shown in Table 1. The specification of the electrical supply, d.c. relay
and back EMF suppression diode are given in Section 2.
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
3Signal output
4 ID resistor
5Signal 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
To Next Page
Loading...
