22
Switch Mode Power Supply
S8VS
Safety Precautions
■
Precautions for Safe Use
Mounting
Take adequate measures to ensure proper heat dissipation to
increase the long-term reliability of the product. Be sure to allow
convection in the atmosphere around devices when mounting. Do
not use in locations where the ambient temperature exceeds the
range of the derating curve.
When cutting out holes for mounting, make sure that cuttings do not
enter the interior of the products.
(15-W and 30-W Models)
Improper mounting will interfere with heat dissipation and may occa-
sionally result in deterioration or damage of internal parts. Use the
product within the derating curve for the mounting direction that is
used.
Use a mounting bracket when the product is mounted facing horizon-
tally.
Heat dissipation will be adversely affected. When the product is
mounted facing horizontally, always place the side with the label fac-
ing upward.
Always provide a space of 20 mm even when mounting horizontally
or facing horizontally. If a space of 20 mm is not available, at least 10
mm must be provided. When mounting Power Supplies facing hori-
zontally in a vertical stack, provide a space of at least 75 mm in
between the Power Supplies. For details, refer to
Derating Curve
on
page 8.
(60-W, 90-W, 120-W, 180-W and 240-W
Models)
Improper mounting will interfere with heat dissipation and may occa-
sionally result in deterioration or damage of internal parts. Use the
standard mounting method only.
Wiring
Connect the ground completely. A protective earthing terminal
stipulated in safety standards is used. Electric shock or malfunction
may occur if the ground is not connected completely.
Minor fire may possibly occur. Ensure that input and output terminals
are wired correctly.
Do not apply more than 100 N force to the terminal block when
tightening it.
Be sure to remove the sheet covering the product for machining
before power-ON so that it does not interfere with heat dissipation.
Use the following material for the wires to be connected to the S8VS
to prevent smoking or ignition caused by abnormal loads.
Recommended Wire Type
15-W and 30-W Models
60-W, 90-W, 120-W, 180-W and 240-W Models
Installation Environment
Do not use the Power Supply in locations subject to shocks or
vibrations. In particular, install the Power Supply as far away as
possible from contactors or other devices that are a vibration source.
Install the Power Supply well away from any sources of strong,
high-frequency noise and surge.
Operating Life
The life of a Power Supply is determined by the life of the electrolytic
capacitors used inside. Here, Arrhenius’s Law applies, i.e., the life
will be cut in half for each rise of 10°C or the life will be doubled for
each drop of 10°C. The life of the Power Supply can thus be
increased by reducing its internal temperature.
Ambient Operating and Storage
Environments
Store the Power Supply at a temperature of
−
25 to 65°C and a
humidity of
−
25% to 90%.
Do not use the Power Supply in areas outside the derating curve
otherwise, internal parts may occasionally deteriorate or be
damaged.
Use the Power Supply at a humidity of 25% to 85%.
Minor electric shock, fire, or Product failure may
occasionally occur. Do not disassemble, modify, or repair
the Product or touch the interior of the Product.
Minor burns may occasionally occur. Do not touch the
Product while power is being supplied or immediately
after power is turned OFF.
Fire may occasionally occur. Tighten terminal screws to
the specified torque (15 and 30 W Models: 0.8 to 1.0 N·m
60, 90,120, 180, and 240 W Models: 1.08 N·m).
Minor injury due to electric shock may occasionally occur.
Do not touch the terminals while power is being supplied.
Always close the terminal cover after wiring.
Minor electric shock, fire, or Product failure may
occasionally occur. Do not allow any pieces of metal or
conductors or any clippings or cuttings resulting from
installation work to enter the Product.
!
CAUTION
*1
*2
*1. Convection of air
*2. 20 mm min.
If 20 mm is not
available, however,
at least 10 mm must
be provided.
Model
Stranded wire
Solid wire
S8VS-03005
AWG18 to 14
(0.9 to 2.0 mm
2
)
AWG18 to 16
(0.9 to 1.1 mm
2
)
Other models
AWG20 to 14
(0.5 to 2.0 mm
2
)
AWG20 to 16
(0.5 to 1.1 mm
2
)
Model
Recommended wire size
For screw terminal
For alarm output
terminal
S8VS-06024
@
AWG14 to 20
(Cross section 0.517 to
2.081mm
2
)
---
S8VS-09024
@@
S8VS-12024
@@
S8VS-18024
@@
S8VS-24024
@@
AWG14 to 18
(Cross section 0.823 to
2.081mm
2
)
AWG18 to 28
(Cross section 0.081 to
0.823mm
2
)
