AB-6569
10
Mount Infilex FC with the front surface facing horizontal
direction unless it is protected in a dust-proof housing.
(See ‘B’ in Fig. 13.) If the Infilex FC is mounted with its
front surface facing the vertical direction (upwards), dust
may accumulate on the connectors. (See ‘A’ in Fig. 13.)
.
Figure 13. Mounding direction
After a modular plug is inserted into the corresponding
modular jack, lightly pull the modular cable to make sure
the modular plug is completely connected to the modular
jack.
Recommended wires and cables
For recommended wires and cables, refer to the wiring
specifications of
Input/output specifications
section.
Wire connection for FCU ON/OFF output, control valve
output, and other inputs
Quick-fit screwless terminals are provided for ON/OFF output,
control valve output, status input, and trip alarm input. Follow
the procedure below for connecting these wires. (Refer to Fig.
9.)
1) Remove covers of the terminals to which wires are
connected.
2) Strip the 5-6 mm wire sheath to be connected to. (Scale
is indicated on the front surface. If a bare wire is longer
or shorter than 5-6 mm, it may get exposed or may come
off from the connector.) Make sure that any wire fiber
goes out of the bare wire.
3) Insert a slotted screwdriver into a smaller square hole
(for clamp release) on the terminal blocks located on the
upper and the lower sides of the front surface.
To insert the screwdriver to deep end (approx. 10 mm
deep), push and tilt it (towards the front surface) along
the curving surface inside the square hole.
When the screwdriver is correctly inserted to the deep
end, the clamp is completely released and the
screwdriver remains inserted position by itself.
Notes:
A slotted screwdriver with the blade 3.5 mm wide and 0.5 mm
thick (straight type) is applicable. A screwdriver with the blade
end narrower than the beginning (shaft side) may not be
applicable.
Applicable screwdriver (an example):
Vessel’s Model 9900 (3 mm wide
100 mm long) or
Model 910 (3 mm wide
75 mm long)
Since the terminal blocks have the inclined surfaces, required
maintenance clearance varies depending on the length of the
screwdriver to be used. Note that a long screwdriver (80 mm or
longer) may not be usable for the Infilex FC replaced from IFC or
Microstat since IFC or Microstat requires smaller maintenance
clearance.
4) After the a bare wire is fully inserted, remove the
screwdriver with the bare wire inserted.
5) Lightly pull the wires connected to make sure it is completely
held by clamp.
Note for connecting stripped wire of 1.8 mm
2
or smaller
cable
1.8 mm
2
or thinner cable connected to a quick-fit screwless
terminal may cause short-circuit due to dust accumulated in
clearance of the terminal. (See Fig. 14.)
To prevent short-circuit, put the tubes* through the wires so
that the wire connected terminals are covered. (See Fig. 15.)
Tubes are not supplied with Infilex FC and commercially
available. See Fig. 24 for tube specifications.
Tubes are also available at Azbil Corporation.
(Part No. 83167219-001, 6 pieces/set)
Figure 14. Dust accumulated in quick-fit screwless terminals
Figure 15. Tubes covering quick-fit screwless terminals
Connection to user terminal / temperature sensor
Wires from user terminal / temperature sensor are connected
to Infilex FC with modular connection. For correctly crimping
modular plugs on LAN cables, refer to the following section.
Dust
Vertical
direction
Horizontal
direction
A: Incorrect
B: Correct
Dust
Tubes
