XNX Universal Transmitter
Installation and Operation
41
FOUNDATION Fieldbus Wiring
FOUNDATION Fieldbus connections to the transmitter are
made through a pluggable terminal block on the FOUNDATION
Fieldbus option board, shown in Figure 38. A simulation switch
(SW5) is included on the board to enable/disable simulation
mode. Terminals 3-1 through 3-4 are provided to facilitate bus
wiring; there is no internal connection to other XNX circuitry.
Terminal 3-1 is connected internally to 3-2. Similarly, terminal 3-3
is connected internally to 3-4.
+
+
TB-3 Modbus
Use shorting jumper
supplied to maintain
connection during
service
S5 Sim Mode
Out
In
3-1
3-2
3-3
3-4
3-5
3-6
F+
F+
F-
F-
FS
FS
TB-3 FFB
Jumper
assignments
1
2
3
4
5
6
to internal
ground lug
SW5 -
Sim switch
Internal ground lug
FOUNDATION Fieldbus
ground cable
Figure 37. FOUNDATION Fieldbus option board and terminal block
Terminal Block Connections
Connections to the transmitter are made via pluggable terminal
blocks secured to the back of the POD. The terminal blocks are
keyed and polarized. A color coded label assists in wiring when
the block is removed from the POD.
The terminals are suitable for use with 12 to 28 AWG or 0.8
to 2.5 mm
2
wire. Wire insulation must be stripped 5/16” (8 mm).
Tighten each terminal to a maximum of 4.5 in-lbs (0.51 Nm). Up
to four terminal blocks are provided; each having 2, 6, 9, or 10
positions.
Two terminal block jumpers are included to provide an electrical
connection without connection to the Personality Board. Install
the jumpers between pins 1 and 2 and between pins 3 and 4 to
support multi-node wiring.
Warning: When the transmitter is equipped with the optional Remote Mount Kit, the
remote sensor must be securely mounted in a fixed position. The Remote Sensor kit is
not intended to be used as a handheld sensor.
Note: FOUNDATION Fieldbus XNX transmitters require a separate power source and
cannot be powered via the bus.
!
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