24
90DM4 User Manual
511105
Honeywell
2/07
W iring Details
E lec tric al W iring
4-20 m A Loop DC Configuration
T h e transm itter sup p lies th e loop c urrent. T h e m ax im um im p ed anc e
sup p orted b y th e loop is 450 oh m s.
Figure 10: 4-20m A DC Configuration Diagram
CAUTI
ON
DO N O T R E V E R S E p olariz ation. C onsid erab le
d am ag e m ay oc c ur if p olariz ation is not resp ec ted .
DDC Syst
em
+
-
+
-
+
-
+
-
90DM 4
V- V+
Sig.
J
1
90DM 4
V- V+
Sig.
J
1
24 Vdc Power
Suppl
y
-
+
R
T
N
R
T
N
