Unit Wiring; Connection Of Wiring - Fujitsu Airstage ARUL7TLAV2 Installation Manual

6.3. Unit wiring

Before attaching the cable to terminal block.
6.3.1. Power supply cable
Adjust the length of power supply cable to avoid excessive tension with referring figure
below.
Earth (Ground)
wire
A. For solid core wiring
(1) To connect the electrical terminal, follow the below diagram and connect after looping
it around the end of the cable.
(2) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(3) Use an appropriate screwdriver to tighten the terminal screws.
(4) Do not use a screwdriver that is too small, otherwise, the screw heads may be dam-
aged and prevent the screws from being properly tightened.
(5) Do not tighten the terminal screws too much, otherwise, the screws may break.
(6) See the table for the terminal screw tightening torques.
(7) Please do not fix 2 power supply cables with 1 screw.
Strip 1 in
(25 mm)
Screw with
special washer
Cable
Cable end (Loop)
Terminal block
When using solid core cables, do not use the ring terminal. If you use the solid core
cables with the ring terminal, the ring terminal's pressure bonding may malfunction and
cause the cables to abnormally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as shown in the figure below to connect to
the terminal block.
(2) Securely clamp the ring terminals to the cables using an appropriate tool so that the
cables do not come loose.
(3) Use the specified cables, connect them securely, and fasten them so that there is no
stress placed on the terminals.
(4) Use an appropriate screwdriver to tighten the terminal screws.
(5) Do not use a screwdriver that is too small, otherwise, the screw heads may be dam-
aged and prevent the screws from being properly tightened.
(6) Do not tighten the terminal screws too much, otherwise, the screws may break.
(7) See the table for the terminal screw tightening torques.
(8) Please do not fix 2 power supply cables with 1 screw.
Strip 3/8 in
(10 mm)
Screw with spe-
cial washer
Cable
Ring terminal
Terminal block
Use ring terminals and tighten the terminal screws to the specified torques, otherwise,
abnormal overheating may be produced and possibly cause heavy damage inside the
unit.
M4 screw
(Power supply/L1, L2 (N), GND)
En-11
2-3/16 in
Conduit connector
(55 mm)
2-9/16 in
(65 mm)
Screw with
special washer
Cable end
(Loop)
Cable
WARNING
Ring terminal
Screw with
special washer
Cable
WARNING
Tightening torque
11 to 16 lbf·in
(1.2 to 1.8 N·m)
6.3.2. Transmission and Remote controller cable
Transmission cable
Shield
cable
(no film)
• When the 2 cables are attached:
GOOD
Tighten the terminal screws to the specified torques, otherwise, abnormal overheating
may be produced and possibly cause heavy damage inside the unit.
(Remote controller/ Y1, Y2)
Loop
To peel the film from the lead cable, use a dedicated tool that will not damage the
conductor cable.
When installing a screw on the terminal block, do not cut the cable by overtightening the
screw. On the other hand, an under tightened screw can cause faulty contact, which will
lead to a communication failure.

6.4. Connection of wiring

(1) Remove the cover.
(2) Connect the connection
cable.
Sleeve
Ring
terminal
1 in (25 mm)
1-9/16 in
(40 mm)
PROHIBITED
Different diameter
WARNING
Terminal number
M3 screw
(Transmission/X1, X2)
CAUTION
Remote controller cable
13/16 in (20 mm)
Connect to 1 side
Tightening torque
4.4 to 5.3 lbf·in
(0.5 to 0.6 N·m)
Cover
Screw
Y1, Y2:
Remote controller cable
X1, X2: Transmission cable
L1, L2 (N): Power supply cable
Lock nut
GND