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4.1 Installation cautions
Refer to the information found in 2 Important Information
(Page 8) before installing the product.
CAUTION
R Always connect power cables to the appropriate
connection terminals. Incorrectly connecting the
power cables may damage the power supply unit.
R To prevent the power cables from disconnecting and
to prevent electric shock, secure the power cables
using the included cable binders and attach the cable
covers.
R If the wiring passes outdoors, use a conduit and a
surge protector.
R If the wiring passes underground, use a conduit, and
do not make any connections underground.
R Install the product securely adhering to the
instructions in this document to prevent it from falling
off the wall. Avoid installing onto low-strength walls,
such as gypsum board, ALC (autoclaved lightweight
concrete), concrete block, or veneer (less than
18 mm thick) walls.
4.2 Installing the power supply
unit
Required items
– VL-PS240 power supply unit (included)
– DC plug (included)
– Cable binders (included)
– Screws (included)
– Wires for AC and DC connection (user supplied)
See 4.5 Wire and cable specifications (Page 22)
for specifications.
– Soldering gun and solder, insulation sleeve (user
supplied)
Installation location
R The device must be installed inside an electrical
panel or cabinet.
R A readily accessible disconnect device shall be
incorporated external to the equipment.
The external disconnect device must be certified, and
have a creepage and clearance distance of 3 mm or
more.
Installation methods
The following 2 methods can be used for installing the
power supply unit.
– mounting on a DIN rail (user supplied)
– attaching directly to a wall
4.2.1 Connecting the AC wires, DC wires, and
DC plug
1
Strip the ends of the wires that connect to the power
supply unit as shown below.
AC wires
45 mm
7 mm
2
Remove the cable cover screws and then remove the
cable covers.
B
A Screws
B Cable covers
3
Connect the AC wires to the AC IN terminals on the
top of the power supply unit, and then connect the DC
wires to the DC OUT terminals on the bottom of the
power supply unit.
Top view
(AC wires)
R For DC wires, the black wire is negative (-) and
the other colour wire is positive (+). Note the
colour of each DC wire and which terminal each
4. Installation
DC wires
25 mm
7 mm
A
Bottom view
(DC wires)
DC +
DC -
13
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