S8VK-R
9
Safety Precautions
Warning Indications
Meaning of Product Safety Symbols
!
CAUTION
Risk of a mild burn on rare occasions. Do not touch
the device unit while it is powered on or immediately
after the power is turned off.
The ignition may accidentally be caused. Tighten
terminal screws to a specified torque 4.43 to
5.31 lb-in (0.5 to 0.6 N·m).
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.
Risk of product damage. Do not reverse the polarity
of the device input terminals when wiring.
Risk of internal component deterioration and
damage. Do not connect an AC power supply.
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.
Wiring
•
Minor fire may possibly occur. Ensure that input and output
terminals are wired correctly.
•
Increases in the temperature of internal parts resulting from
heating of wiring materials may result in deterioration or damage to
parts. Use wiring materials suitable to the current being used. The
following wiring materials, torque and strip length are
recommended to prevent heating and possible fires in wiring
materials.
•
On rare occasions there is a risk of internal element deterioration
and damage if use is continued in a short-circuit or over-current
state.
•
Do not apply more than 75N force to the terminal block when
tightening it.
•
Use within a range that does not exceed the output current rating.
When a load short-circuit occurs, the short-circuit current of two
power supply units flows. Use output wiring that can handle the
short-circuit current of two units. If the wiring does not have
sufficient current capacity, connect a fuse on the output side.
Recommended fuse S8VK-R10: 15 A, S8VK-R20: 30 A Fast-
acting type
If the current rating of the output terminal is exceeded on the S8VK-
R20, always use multiple terminals simultaneously.
•
Risk of damage to internal components. Do not use in a state that
exceeds the rated current of the signal output.
Installation Environment
•
Do not use the Redundancy Unit in locations subject to shocks or
vibrations. In particular, install the Redundancy Unit as far away as
possible from contactors or other devices that are a vibration
source.
•
Install the Redundancy Unit well away from any sources of strong,
high-frequency noise and surge.
Ambient Operating and Storage Environments
•
Store the product with ambient temperature
−
40 to 85
°
C, and
relative humidity 0 to 95%.
•
The internal parts may occasionally be deteriorated or broken. Do
not use at a temperature that exceed the operating temperature
range for the mounting type.
•
Use the product where the relative humidity is 0 to 95%.
•
Avoid places where the product is subjected to direct sunlight.
•
Avoid places where the product is subjected to penetration of
liquid, foreign substance, or corrosive gas.
•
Avoid places subject to shock or vibration.A device such as a
contact breaker may be a vibration source.
Set the Redundancy Unit as far as possible from possible sources
of shock or vibration.
•
If the Redundancy Unit is used in an area with excessive electronic
noise or surge, be sure to separate the Redundancy Unit as far as
possible from the noise sources.
CAUTION
Indicates a potentially hazardous
situation which, if not avoided, may
result in minor or moderate injury or in
property damage.
Precautions for
Safe Use
Supplementary comments on what to
do or avoid doing, to use the product
safely.
Precautions for
Correct Use
Supplementary comments on what to
do or avoid doing, to prevent failure to
operate, malfunction or undesirable
effect on product performance.
Used to warn of the risk of minor injury caused by
high temperatures.
Used for general mandatory action precautions
for which there is no specified symbol.
Use to indicate prohibition when there is a risk of
minor injury from electrical shock or other source
if the product is disassembled.
Precautions for Safe Use
Terminal
Model
Recommend Wire Type
AWG
Solid wire
Twisted wire
Input
S8VK-R10
AWG14 to 12 2.5 to 4 mm
2
2.5
mm
2
S8VK-R20
AWG12 to 10 4 to 6 mm
2
4 mm
2
Output
S8VK-R10
AWG14 to 12 2.5 to 4 mm
2
2.5 mm
2
S8VK-R20
AWG12 to 10 4 to 6 mm
2
4 mm
2
Status
contact
S8VK-R
@@
AWG16
1.5 mm
2
---
All
terminals
wires to be stripped: 8 mm
