Eaton XN300 - Page 158

22 Analog input module XN-322-4AI-PTNI
22.3 Wiring topic
XN300 slice modules 02/24 MN050002EN Eaton.com 154
22.3.2 Three-wire connection
When using a three-wire connection, the resistance value between pins 1
and 3 and between pins 1 and 2 is measured. In this type of configuration,
the cable resistance will not affect the measurement, provided all cable
lengths are identical.
R
L
 200  = Cable resistance of connection cable
R
T
= Resistance of temperature sensor
Figure 91: Wiring diagram for three-wire connections; X1, X2, X3, and/or X4 can be used
with this type of configuration
X1
R+ S+ R-
PE
24 V
0 V
R
L
R
L
R
L
R
T
X2
R+ S+ R-
R
L
R
L
R
L
R
T
X3
R+ S+ R-
R
L
R
L
R
L
R
T
X4
R+ S+ R-
R
L
R
L
R
L
R
T
