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Safety Precautions
!CAUTION
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 of 1.6 N·m.
Minor injury due to electric shock may occasionally occur.
Do not touch the terminals while power is being supplied.
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.
� Precautions for Safe Use
Mounting
Standard mounting
(DIN Rail mounting bracket type)
(See note 1.)
(See note 1.)
(See note 2.)
Horizontal mounting
(Front-mounting type)
(See note 1.)
(See note 2.)
Note: 1. Convection of air
2. 20 mm or more
3. Use a metal plate as the
mounting panel.
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 exceed the range of the derating curve.
Use the metal plate as the mounting panel.
When cutting out holes for mounting, make sure that cuttings do not
enter the interior of the Product.
Improper mounting will interfere with heat dissipation and may
occasionally result in deterioration or damage of internal parts.
Use the Product within the derating curve for the mounting direction
that is used.
When mounting two or more Power Supplies side-by-side, allow at
least 20 mm spacing between them, as shown in the above
illustrations.
Switch Mode Power Supply S8VM
Standard mounting
(Front-mounting type)
(See note 3.)
(See note 2.)
Face-up mounting
(Front-mounting type)
(See
note 1.)
(See note 3.)
(See note 3.)
The internal parts may possibly be damaged if mounting screws are
over inserted. Refer to Dimensions on page 12 for maximum depth of
insertion inside the Power Supply.
Several Power Supplies cannot be connected. (Only S8VM-
100@@@@/150@@@@) Keep the Power Supply as far away from
heating elements as possible when installing. As a reference value,
allow at least 50 mm spacing on the right and left sides. If only 20
mm spacing is allowed, use the Power Supply at a load ratio of 80%
or less.
S8VM-100@@@@/S8VM-150@@@@
Wiring
Connect the ground completely. A protective earthing connection
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 S8VM
(See
to prevent smoking or ignition caused by abnormal loads.
note 1.)
Over heating or fire can result from inadequately sized wiring
materials when problems occur at the load. As a general rule, always
select wire sizes suitable for at least 1.6 times the rated current.
Recommended Wire Types
(See
note 1.)
Model
S8VM-015@@@@
S8VM-030@@@@
S8VM-050@@@@
S8VM-100@@@@
S8VM-150@@@@
S8VM-100@@@@
S8VM-150@@@@
Selection of Wires
Select wires for the Power Supply carefully. Refer to this table when
selecting the wires.
AWG
Cross-
No.
sectional
area (mm
2
(See note 1.)
30
0.051
28
0.081
26
0.129
24
0.205
22
0.326
20
0.517
18
0.823
16
1.309
14
2.081
12
3.309
10
5.262
Switch Mode Power Supply
Incorrect
Incorrect
Recommended wire type
AWG24 to 14 (0.205 to 2.081 mm
(M3.5)
(M3.5) AWG24 to 14 (0.205 to 2.081 mm
AWG24 to 12 (0.205 to 3.309 mm
(M4)
Configuration
Voltage
Recommended maximum
(number of
drop per
)
conductors/
1 A (mV/
UL1007
mm)
meter)
(300 V at
80° C)
7/0.102
358
0.12
7/0.127
222
0.15
7/0.16
140
0.35
11/0.16
88.9
0.7
17/0.16
57.5
1.4
26/0.16
37.6
2.8
43/0.16
22.8
4.2
54/0.18
14.9
5.6
41/0.26
9.5
---
65/0.26
6.0
---
104/0.26
3.8
---
S8VM
2
)
2
)
2
)
current (A)
UL1015
(600 V at
105° C)
---
0.2
0.5
1.0
2.0
4.0
6.0
8.0
12.0
22.0
35.0
23
19
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