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FP-TB-1/2/3 Operating Instructions
6
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Field Wiring
The FP-TB-1 and FP-TB-2 provide four dedicated terminals and
32 numbered terminals defined by the I/O module. The terminals
are designed for 16–26 AWG copper conductor wire with 7 mm
(0.28 in.) of insulation stripped from the end as shown in Figure 7.
Use only copper wire unless you are working with a sensing
device, such as a thermocouple, that requires a different kind
of wire.
Figure 7.
Conductor Wire with the Correct Strip Length
The four dedicated terminals are two V and two C terminals, one
of each at both ends of the terminal base. The two V terminals
are internally connected by the terminal base, as are the two
C terminals. Generally, these terminals are intended to connect
external power supplies to field devices. FieldPoint I/O modules
get their power from the network module through the backplane,
and in most cases require no external power for proper operation.
Refer to the appropriate I/O module operating instructions
for details on the use of these terminals and the other 32 terminals.
The FP-TB-3 provides two dedicated C terminals and 16 numbered
terminals defined by the I/O module. Although the FP-TB-3 is
designed specifically to work with thermocouple modules, I/O
modules that do not require external power and that only use
terminals 1 to 16 can be used with the FP-TB-3.
Caution
Before you connect wires to the terminal base,
make sure that power is not applied to it.
Connecting Wires to the FP-TB-1 or FP-TB-3
Follow these steps to connect wires to the FP-TB-1 or FP-TB-3.
1. Loosen the terminal screw you want to wire.
2. Insert the wire in the terminal.
3. Tighten the screw terminal to 0.5–0.6 N
⋅
m (4.4–5.3 lb
⋅
in.) of
torque.
7 mm
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