Omron S8VK-R Series User manual

1
New Product
Redundancy Unit
S8VK-R
Contribute to build high reliable systems
Compact and Cost-effective solution
for Back-up applications
Easy setup for system reliability
requirement
• Redundancy operating LED for the status confirmation
• A signal output for failure detection of power supplies
• By adjusting the power supply voltage to light up Balance LED,
the lifetime of power supplies will be more than twice. *1
• Wide range input
DC5-30V (S8VK-R10), DC10-60V (S8VK-R20)
• Wide operation temperature range: -40 to 70 °C
• Safety standards:
UL508/60950-1, CSA C22.2 No. 107.1/60950-1
EN50178, EN60950-1 Lloyd's standards *2
• EMS: EN61000-6-2
EMI: EN61000-6-3
• Six years warranty *3
*1. The lifetime will depend on the connected power supply.
Refer to Functions on page 5.
*2. Scheduled to obtain certification in September, 2013.
*3. Six years warranty conditions: Rated input voltage, 80% load, Ambient operating temperature: 40°C, Standard mounting.
Model Number Structure
Model Number Legend
Note: Not all combinations are possible. Refer to List of Models in Ordering Information, below.
Ordering Information
Note: For details on normal stock models, contact your nearest OMRON representative.
!Referto Safety Precautions forAll PowerSuppliesandSafety
Precautions on page 9.
Input voltage Output current Model number
DC5-30V 10 A S8VK-R10
DC10-60V 20 A S8VK-R20
1
S8VK-R @@
1. Output current
10: 10 A
20: 20 A

S8VK-R
2
Specifications
Ratings, Characteristics, and Functions
*Scheduled to obtain certification in September, 2013.
I t e m Output Current 10 A 20 A
Input Voltage 5 to 30 VDC 10 to 60 VDC
Current 2x 0 to 5 A 2x 0 to 10 A
1x 0 to 10 A 1x 0 to 20 A
Output Current Continuous 10 A 20 A
Power Boost 12 A (Refer to Engineering Data) 24 A (Refer to Engineering Data)
Voltage
drop Input to Output 0.56 V typ. 2x5 A
0.63 V typ. 1x10 A
0.7 V max. (-40°C 1x10 A)
0.67 V typ. 2x10 A
0.78 V typ. 1x20 A
0.9 V max. (-40°C 1x20 A)
Power
losses
6.5 W 2x5 A
7.1 W 1x10 A
0.8 W 0 A
15.8 W 2x10 A
18.0 W 1x20 A
0.8 W 0 A
Additional
functions
REDUNDANCY
OK
Indicator Lighting: Voltage difference between Vin1 and Vin2 is less than 2.4 V typ. (color: green)
Contact Photo switch contact ON: Voltage difference between Vin1 and Vin2 is less than 2.4 V typ.
Contact Ratings: 30 VDC, 50 mA
BALANCE Indicator Lighting: Voltage difference between Vin1 and Vin2 is less than 50 mV typ. (color: green)
Others
Ambient operating temperature -40 to 70°C (Refer to Engineering Data)
Storage temperature -40 to 85°C
Ambient operating humidity 0% to 95% (Storage humidity: 0% to 95%)
Dielectric strength
(detection current: 20 mA) 1.0 kVAC for 1 min. (between all inputs outputs and terminal) 0.5 kVAC for 1 min. (between all inputs outputs and Signal contact)
Vibration resistance 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions
10 to 150 Hz, 0.35-mm single amplitude (5 G max.) for 80 min each in X, Y, and Z directions
Shock resistance 150 m/s2, 3 times each in ±X, ±Y, and ±Z directions
EMI
Conducted
Emission Conforms to EN61204-3 EN55011 Class B and based on FCC Class B
Radiated
Emission Conforms to EN61204-3 EN55011 Class B
EMS Conforms to EN61000-6-2
Approved Standards
UL Listed: UL508 (Listing)
UL UR: UL60950-1 (Recognition)
cUL: CSA C22.2 No.107.1
cUR: CSA C22.2 No.60950-1
EN: EN50178, EN60950-1
Lloyd's standards *
Degree of protection IP20 by EN/IEC60529
Weight 183 g 462 g

S8VK-R
3
Connections
Block Diagrams
Construction and Nomenclature
Nomenclature
10 A Models 20 A Models
S8VK-R10 S8VK-R20
No. Name Function
1 Input terminal 1 Connect the input 1 lines to these terminals.
2 Input terminal 2 Connect the input 2 lines to these terminals.
3terminal Connect the ground line to these terminals.
4 Output terminal Connect the load lines to these terminals.
5 Status indicator (redundancy OK: Green) Lighting: Voltage difference between Vin1 and Vin2 is less than 2.4 V typ.
6 Status indicator (voltage balance: Green) Lighting: Voltage difference between Vin1 and Vin2 is less than 50 mV typ.
7 Status contact (redundancy OK: photo switch) Photo switch contact ON: Voltage difference between Vin1 and Vin2 is less than 2.4 V typ.
R10 20A
R20 40A
fuse:
R10 20A
R20 40A
fuse:
+V +V
+V
IN 1
-V
+V
IN 2
-V -V
-V
Detection
circuit
OUTPUT
REDUNDANCY
OK
Frame landing
Only R20.
3
2
6
5
4
7
1
3
2
6
5
4
7
1

S8VK-R
4
Engineering Data
Derating Curve
Mounting
Combinations with the S8VK-G
Power Boost Function
This function is possible when used in combination with S8VK-G (All
Models).
Power Boost is a function that can output the temporary repeated
boost current larger than the rated current.
However, it should meet the following four Boost current conditions.
1. Time that the boost current flows: t1
2. The maximum value of the boost current: lp
3. The average output current: lave
4. The time ratio of the boost current flow: Duty
Note: Boost current conditions
•Do not allow the boost current to continue for more than 10
seconds.
Also, do not let the duty cycle exceed the boost current conditions.
These conditions may damage the Power supply.
•Ensure that the average current of one cycle of the boost current
does not exceed the rated output current.
This may damage the Power Supply.
•Lessen the load of the boost load current by adjusting the ambient
temperature and the mounting direction.
Power supply
model Redundant unit model
Redundancy Higher capasity
S8VK-G015@@
S8VK-R10 S8VK-R10
S8VK-G030@@
S8VK-G060@@
S8VK-G12024
S8VK-G24024
S8VK-R20
S8VK-G24048 S8VK-R20S8VK-G48024
S8VK-G48048
Load ratio (%)
Ambient temperature (°C)
A
B
C
−40 −25 −10 0 10 20 30 40 50 60 70 80
120
100
80
60
40
20
0
A: Standard mounting
B: Standard mounting, when contact mounted with S8VK-G
60°C and over: the derating is 2.5%/°C (when contact mounted
with S8VK-G)
C: Face-up mounting
50°C and over: the derating is 1.25%/°C
(B) Contact Mounting
(C) Face-up mounting
(A) Standard (Vertical) mounting
S8VK-R
POWER SUPPLY
(S8VK-G)
[A] Ip: Boost current
Rated current
lave: Average current
t2
t1
output current
•t1
•Ip
•lave
≤10 s
≤Rated boost current
≤Rated current
Duty= t1 + t2
t1 × 100 [%] ≤ 30%

S8VK-R
5
Functions
Functions
Status Functions
Reference Value
Status Output Display
Redundancy Relay switch output: OFF
(Normally ON) Green
Voltage Balance --- Green
Functions Operation
Redundancy Status
(Refer to Chart 1.) Redundancy OK signal and LED will turn ON and light up when the input voltage difference is 2.4 V typ or less.
The signal and LED will detect the failure of a power supply on one side, or connecting errors of power supply
voltage.
Voltage Balance Status
(Refer to Chart 1.)
Balance LED will light up when the input voltage difference is 50 mV typ or less.
By adjusting the input voltage to light up LED, output current of each power supply will be balanced.
The lifetime as a power supply system will be more than twice comparing when there is only one power supply.
Applicable models: S8VK-G03005, S8VK-G06012, S8VK-G12024, S8VK-G240@@, S8VK-G480@@
By adjusting the input voltage to light up LED, the fluctuation of the output voltage will be less when one of the
power supply breaks.
Chart 1: Operation Timing
Reliability (MTBF) Value
S8VK-R10: 720,000 hrs.
S8VK-R20: 680,000 hrs.
Definition MTBF stands for Mean Time Between Failures, which is calculated according to the probability of accidental device failures, and indicates reliability of devices.
Therefore, it does not necessarily represent a life of the product.
Life expectancy 10 yrs. Min.
Definition The life expectancy indicates average operating hours under the ambient temperature of 40°C and a load rate of 50%.
Normally this is determined by the life expectancy of the built-in aluminum electrolytic capacitor.
Vin Vin+0.05Vin+2.4 Vin+1.2Vin+0.05
Vin-1.2
Vin-0.05 Vin-0.05
Vin-2.4
Vin+1.2
Vin-0.05
Vin+0.05Vin+2.4
Vin-0.05
Vin+0.05 Vin
Vin-1.2 Vin-2.4
LED: Lighting
Photo switch: ON
LED: Lighting
Vin1 (UNIT: V)
Vin2 (UNIT: V)
REDUNDANCYOK
BALANCE

S8VK-R
6
Dimensions (Unit: mm)
32
Rail Stopper
3.5
3.6 dia. (Bit #1)
4.7
(Sliding: 10 max.)
5
75.4 90
8.5
5
3.6 dia. (Bit #1)
34.9
(1) 110
106
5.7
7.62
S8VK-R10
(10)
5.0 dia. (Bit #2)
5.0 dia. (Bit #2)
(1) (4)
112.2
117.8
34.7
6.35
4.7
(Sliding: 7.5 max.)
125
20.5
5
104.6
Rail Stopper 40
8.2
6.35
S8VK-R20

S8VK-R
7
DIN Rail (Order Separately)
Note: All units are in millimeters unless otherwise indicated.
Mounting Rail (Material: Aluminum)
PFP-100N
PFP-50N
Mounting Rail (Material: Aluminum)
PFP-100N2
End Plate
PFP-M
Note: If there is a possibility that the Unit will be subject to vibration or shock, use a steel DIN Rail. Otherwise, metallic filings may result from
aluminum abrasion.
4.5
15 25 25
10 10
1,000 (500) *
25 25 15(5) *
35±0.3
7.3±0.15
27±0.15
1
*Values in parentheses are for the PFP-50N.
4.5
15 25 25
10 10
1,000 25 25 15 1 1.5
29.2242735
±
0.3
16
1.3
4.8
35.5 35.5
1.8
1.8
10 6.2
1
50
11.5
10
M4 spring washer
M4×8 pan-
head screw

S8VK-R
8
Mounting Brackets
Name Model
Front-mounting bracket (for S8VK-R10) S82Y-VS10F
Front-mounting bracket (for S8VK-R20) S82Y-VK10F
Side-mounting bracket (for S8VK-R10) S82Y-VS10S
Side-mounting bracket (for S8VK-R20) S82Y-VK10S
Type Model Dimensions Appearance
Front-mounting
bracket
(for S8VK-R10) S82Y-VS10F
Front-mounting
bracket
(for S8VK-R20) S82Y-VK10F
Side-mounting
bracket
(for S8VK-R10) S82Y-VS10S
Side-mounting
bracket
(for S8VK-R20) S82Y-VK10S
41
35±0.1
40
50
4.5 dia.±0.1
35
25
10
7.3
t = 1.0
25±0.1
140±0.1
150
38 4.5 dia.±0.1 5.4
t = 2.0
35 64
t = 2.0
80 60±0.1
55±0.1 13
4.5 dia.±0.1
Left-side mounting Right-side mounting
140±0.1
50±0.1 15.5±0.1
150
73
4.5 dia.±0.1
4940
125
t = 2.0
Left-side mounting Right-side mounting

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
heatingof 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
Ifthe current rating of the output terminalis 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 asfar 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.
•Ifthe 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 mm22.5 mm2
S8VK-R20 AWG12 to 10 4 to 6 mm24 mm2
Output S8VK-R10 AWG14 to 12 2.5 to 4 mm22.5 mm2
S8VK-R20 AWG12 to 10 4 to 6 mm24 mm2
Status
contact S8VK-R@@ AWG16 1.5 mm2---
All
terminals wires to be stripped: 8 mm

S8VK-R
10
Mounting
The long-term reliability of the S8VK-R can be increased by installing
it properly and sufficiently considering heat dissipation.
Install the S8VK-R so that the air flow circulates around it, because
the S8VK-R is designed to radiate heat by means of natural air
circulation.
Can be used in a contact mounting with the S8VK-G (not covered by
safety certification). Two S8VK-G units cannot be mounted together
in a contact mounting.
Input Voltage
Rating
S8VK-R10: DC5 to 30V
S8VK-R20: DC10 to 60V
Input Power Supply Selection
This product contains an internal fuse. If a power supply other than
the S8VK-G is used, the fuse may blow, depending on the state of the
load. Do not connect a power supply other than the S8VK-G to this
product.
If you are building a redundant system, never use in a state that
exceeds the rated current of the power supply. If one of the power
supplies goes down, there is a risk that the voltage on the load side
cannot be attained.
Use the same model for the power supplies that are connected.
On rare occasions internal element deterioration and damage may
occur if use is continued in a short-circuit or over-current state. Do not
continue use for more than 10 seconds.
Do not use in applications where load rush current or overload may
frequently occur. Slight risk of deterioration and damage due to
internal loss.
The signal output / status LED may occasionally not operate stably.
When using in environments where the temperature is less than
−25 °C, always adjust the 5 V power supply to 5.3 V or higher.
Dielectric Strength Test
The S8VK-R is designed to withstand a voltage test of 1 kV AC
between all input/output terminals and the chassis, and 0.5 kV AC
between all input/output terminals and the signal output terminal, for
one minute.
Note:
1. The S8VK-R may possibly be damaged from the impulse voltage
if a testing device switch is used to abruptly apply or shut off 1 kV
AC, 0.5 kV AC. Increase the applied voltage gradually using the
voltage adjustment on the testing device.
2. When testing, always short-circuit all terminals to prevent damage
to the output terminal.
Signal output
Photo switch output
Photo switch ON when input voltage difference is 2.4 V typ. or less.
30 VDC max. (LVLC), 50 mA max., residual voltage when ON: 2 V
max., leakage current when OFF: 0.1 mA max.
Status display LEDs
The status display LEDs show the status of the input power as shown
in the table below.
Redundancy OK
Green on: Input voltage difference is 2.4 V typ. or less.
Voltage balance
Green on: Input voltage difference is 50 mV typ. or less.
The redundancy OK display/signal operates when the voltage
difference is no more than 2.4 V typ. When using a 5 V or 12 V power
supply, verify that there is no difference in the output voltages of the
power supplies.
Thevoltage balance display does not guarantee current balance.The
degree of balance varies by model, and therefore if you require
operation with balanced current, check the output current of each
power supply unit.
The models below use a voltagebalance display, and cannot be used
as a current balance.
S8VK-G015@@
S8VK-G03012·S8VK-G03024
S8VK-G06024
When adjusting the voltage based on the voltage balance, adjust the
voltage of only one power supply. If you must adjust the voltages of
both power supplies, be sure to check the output voltage before use.
If you want to use the voltage balance display to ensure that the
expected life is obtained, use the same thickness and length of wiring
from each S8VK-G to the S8VK-R.
Connections
It is possible to connect S8VK-R like below.
Precautions for Correct Use
*1. Convection of air
*2. 75 mm min.
*3. 75 mm min.
*4. 20 mm min.
*1*2
*1
*4*4
*3
IN1
OUT
IN2
REDUNDANCY
UNIT
POWER SUPPLY
LN
POWER SUPPLY
LN
REDUNDANCY
MONITOR
LOAD
L
N
OPTIONAL
FG

Read and Understand this Catalog
Please read and understand this catalog before purchasing the product. Please consult your OMRON representative if you have
any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year
(or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER ORUSER ALONE HAS DETERMINED THAT THE PRODUCTS WILLSUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE
PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,
INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE
MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of the
product in the customer's application or use of the product.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.
Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT
ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a
warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application
requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No.T059-E1-01 0613
© OMRON Corporation 2013 All Rights Reserved.
OMRON Corporation Industrial Automation Company
OMRON ELECTRONICS LLC
One Commerce Drive Schaumburg,
IL 60173-5302 U.S.A.
Tel: [phone]/Fax: [phone]
Regional Headquarters
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Alexandra Technopark,
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Tel: [phone]/Fax: [phone]
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200Yin Cheng Zhong Road,
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Tel: [phone]/Fax: [phone]