Agro SMART ATEX Instrucciones De Instalación Y Mantenimiento página 19

DC connection, in zone 21, shall be protected by installing inside the indicator a 1 A fuse according to IEC 60127 by
means of an in-line fuse holder according to the following scheme.
2.5.4.2 Load cell and RS-232 communications:
Connections have to be performed following the order of the numbers showed in the figure below and with the
signals from the tables showed below (four or six wires systems):
Six wires systems:
Load cell connection
PIN SIGNAL
1 SIG +
2 SIG-
3 Shield
4 Sense +
5 Sense -
6 EXC -
7 EXC +
SMART ATEX – INSTALLATION AND MAINTENANCE MANUAL
Figure 2.5.4.1.1
Figure 2.5.4.1.2
Figure 2.5.4.2.1
UTILCELL load cell color code
Red
White
-
Blue
Yellow
Black
Green
RS-232 connection
PIN SIGNAL
1 TxD
2 RxD
3 RTS
4 GND
2-5