S8VK-S
18
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. For usage onboard a ship, always attach an End Plate
(PFP-M) to both sides of the Power Supply to hold the Power
Supply in place.
• 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 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 -40 to 85°C and a
humidity of 95% or less.
• 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 95% max.
• Do not use the Power Supply in locations subject to direct sunlight.
• Do not use the Power Supply in locations where liquids, foreign
matter, or corrosive gases may enter the interior of Power Supply.
Mounting
• Take adequate measures to ensure proper heat dissipation to
increase the long-term reliability of the Power Supply. 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 Power Supplies.
• The internal parts may occasionally deteriorate and be broken due
to adverse heat radiation. Do not loosen the screws on the Power
Supply.
• The following combinations are possible for
(C) Front, Side-by-side
mounting
indicated under
• Same models
• S8VK-S03024, S8VK-S06024 and S8VK-S12024
• S8VK-S24024 and S8VK-S48024
Use the Product within the derating curve for the front, side-by-side
mounting.
DIN Rail Mounting
To mount the Block on a DIN Rail, hook portion (A) of the Block onto
the rail and press the Block in direction (B).
To dismount the Block, pull down portion (C) with a flat-blade
screwdriver and pull out the Block.
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.
• When you insert wires or insert a screwdriver into a release hole, do
not press down on the terminal block with a force of 40 N or greater.
• Do not wire anything to the release holes.
• Do not tilt or twist a flat-blade screwdriver while it is inserted into a
release hole on the terminal block. The terminal block may be
damaged.
• Insert a flat-blade screwdriver into the release holes at an angle.
The terminal block may be damaged if you insert the screwdriver
straight in.
• Do not allow the flat-blade screwdriver to fall out while it is inserted
into a release hole.
• Do not bend a wire past its natural bending radius or pull on it with
excessive force. Doing so may cause the wire disconnection.
• Do not insert more than one wire into each terminal insertion hole.
• Do not pre-solder the ends of the wires. Doing so will inhibit proper
connection.
• Be sure to remove the sheet covering the Product for machining
before power-ON so that it does not interfere with heat dissipation.
• Make sure to use stranded wires or wires with ferrules when there
is a possibility of vibration or impact.
• To prevent wiring materials from smoking or ignition, confirm wire
ratings and use the wiring materials given in the following table.
• Input crossover wiring can be used for the input side of this Power
Supply.
Precautions for Safe Use
*
2
*
2
*
1
*
3
*
3
*
1
*
1
*
1
*
1
*
1
*1.
Convection of air
*2.
Vertical separation: 25 mm or more
(S8VK-S03024, S06024, S12024)
Vertical separation: 23 mm or more
(S8VK-S24024, S48024)
*3.
Horizontal separation: 15mm or more
Terminal name
Model
Recommended
wire gauge
Solid/stranded
wire
(mm
2
)
(AWG)
Input terminal
S8VK-S03024, S06024,
S12024
0.34 to 2.5
22 to 14
S8VK-S24024
0.5 to 2.5
20 to 14
S8VK-S48024
0.75 to 2.5
18 to 14
DC output
terminal
S8VK-S03024, S06024
0.5 to 2.5
20 to 14
S8VK-S12024
0.75 to 2.5
18 to 14
S8VK-S24024
2 to 2.5
14
S8VK-S48024
3.5 to 6
12 to 10
Low-voltage
detection output
S8VK-S24024, S48024
0.25 to 2.5
24 to 14
PE (protective
earth) terminal
S8VK-S03024, S06024,
S12024, S24024,
S48024
2 to 2.5
14
(B)
(A)
(C)
R
a
il
s
topper
