Honeywell XNX-BT Series

XNX Universal Transmitter
HART Protocol
182
HART Sink, Source, and Isolated Wiring
The following gures illustrate the proper HART Multidrop wiring for the transmitter.
Figure 234. Multidrop HART network wiring - sink
S1
S1
Source
Sink
Isolated
S2
S2
+V 1-1
EC TB-1
4-20mA
HART
16-32 VDC
6.2W max.
1-2
-V 1-3
1-4
+mA 1-5
-mA 1-6
S1
S1
Source
Sink
Isolated
S2
S2
+V 1-1
EC TB-1
4-20mA
HART
16-32 VDC
6.2W max.
1-2
-V 1-3
1-4
+mA 1-5
-mA 1-6
S1
S1
Source
Sink
Isolated
S2
S2
+V 1-1
EC TB-1
4-20mA
HART
16-32 VDC
6.2W max.
1-2
-V 1-3
1-4
+mA 1-5
-mA 1-6
250 Ω
minimum
XNX
Address 1
XNX
Address 2
XNX
Address 7
HART
Handheld
Communicator
NOTE: Only addresses greater than 0 are valid for multidrop HART networks.
Other loop
powered
HART
devices
-
+
S1
S1
Source
Sink
Isolated
S2
S2
+V 1-1
1
6.
+
24
VDC
-
External HART
Automation Equipment