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Buffer Block
S8T-DCBU-02
CSM_S8T-DCBU-02_DS_E_8_1
Prevents Equipment Stoppage, Data Loss, and
Other Problems Resulting from Momentary
Power Failures
• Provides a backup time of 500 ms at an output current of 2.5 A.
• Can be wired to the 24-V output from the S8VS Supplies.
• Connects to an S8TS Power Supply via an S8T-BUS03 Bus Line
Connector.
• Parallel connections to up to four Blocks can be used to increase
the backup time and current capacities.
• Complies with SEMI F47-0200 standard.
• RoHS-compliant
• Ambient operating temperature range of –20 to 60°C.
S8T-DCBU-02
S8TS
!
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
Refer to Safety Precautions for All Power Supplies and Safety
Precautions on page 16.
Ordering Information
■ Buffer Block
Input voltage
Output voltage
(during backup operation)
24 VDC (24 to 28 VDC)
22.5 V
Output current
2.5 A
Model number
S8T-DCBU-02
■ Options (Order Separately)
Bus Line Connector (Connects to Buffer Block)
Type
Number of Connectors
Connector with DC line connected.
Model number
1 Connector
S8T-BUS03
10 Connectors (See note.)
S8T-BUS13
Note: One package contains 10 S8T-BUS03 Connectors.
Basic Configuration
Connecting to the S8TS-06024@
Connection via Wiring
Connect to AC lines.
Connect to AC lines.
S8TS-06024@
(Order separately.)
S8T-BUS03
Bus Line Connector
(Order separately.)
S8T-DCBU-02
Load
Load
1
S8T-DCBU-02
Specifications
■ Ratings/Characteristics
Item
Input
S8T-DCBU-02
24 to 28 VDC
Charging
0.4 A
Standby
0.18 A
Output
Backup
Output voltage
For 24 V: 22.5 V typ., 22.0 V min.
(See note 1.) operation
For 28 V: 26.4 V typ., 25.8 V min.
Output current
2.5 A
Backup time
Time required until the voltage drops from the fully charged level down to 21.6 VDC
(See note 2.)
1,000 ms min. (for an output current of 1.2 A)
500 ms min. (for an output current of 2.5 A)
Additional
Output
READY indicator
Yes (color: green)
functions
functions
READY output
Yes (relay: 24 VDC, 0.1 A max.)
(See note 3.)
Backup indictor
Yes (color: red)
Backup output
Yes (relay: 24 VDC, 0.1 A max.)
Overcurrent protection
Reverse-L dropping, automatic reset, overcurrent detection point: 5.8 to 6.8 A
Overvoltage protection
Yes
Parallel operation
Yes (Up to 4 Blocks)
Series operation
No
Other
Ambient operating temperature
Refer to the derating curve in Engineering Data. (with no condensation or icing)
Storage temperature
−25 to 65°C
Ambient humidity
Operating: 25% to 85%; Storage: 25% to 90%
Dielectric strength (See note 4.)
1.0 kVAC for 1 minute (between all DC connection terminals and PE terminals; Detection
current: 20 mA)
500 VAC for 1 minute (between all DC connection terminals/PE terminals and all signal
output terminals; detection current: 20 mA)
Insulation resistance
100 MΩ min. (between all DC connection terminals and PE terminals) at 500 VDC
Vibration resistance (See notes 5 and 6.) 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions
Shock resistance (See notes 5 and 6.) 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 A
(See note 5.)
Radiated Emission
Conforms to EN61204-3 EN55011 Class B
EMS
Conforms to EN61204-3 High severity levels
UL508 (Listing; Class 2: Per UL1310) (See note 7.), UL60950-1
Approved
UL:
CSA C22.2 No.14 (Class 2: Per No. 223) (See note 7.),
standards
cUL:
CSA No. 60950-1
cUR:
EN50178 (= VDE0160), EN60950-1 (= VDE0805 Teil 1)
EN/VDE:
SEMI
SEMI F47-0200
Weight
450 g max.
Note: 1.
2.
3.
4.
5.
6.
7.
Model
Voltage
Current
The output characteristics are specified at the power output terminals.
Refer to Backup Time on page 10 for details.
Refer to Functions on page 7 for details.
If the number of S8T-DCBU-02 Buffer Blocks to be connected is “N,” set the detection current to 20 mA × N.
Specified by S8TS-06024@ connection.
Be sure to mount an End Plate (PFP-M: Order separately) on each end of the Buffer Block. Refer to DIN Rails on page 15.
To comply with Class 2, connect one S8TS-06024@ to one S8T-DCBU-02 Buffer Block.
■ Reference Value
Item
Reliability
(MTBF)
Value
Definition
135,000 hrs MTBF stands for Mean Time Between
min.
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
10 yrs. min. The life expectancy indicates average opexpectancy
erating 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.
2
S8T-DCBU-02
Connections
■ Block Diagram
S8T-DCBU-02
+V
DC input/output
−V
Reverse
connection
protection
Reverse flow
prevention diode
Discharging circuit
Electrolytic capacitor
Reverse
connection
protection
+
Charging
circuit
−
Drive circuit
Detection
resistor
Drive circuit
Discharging control
circuit
Charging
control
circuit
Voltage
detection 1
Overvoltage
detection
Voltage
detection 2
Overcurrent
detection
Voltage
detection
Voltage
detection
BACKUP output
BACKUP
status
detection
Voltage
detection
READY output
Voltage
detection
Connected to
DC (+)
Bus Line
Connector
DC (−)
Connected
to Bus Line
Connector
Operation
■ Application
Connectable Power Supplies
The following Power Supplies can be connected. When connected to
the following Power Supplies, the Buffer Block will function properly
against a momentary power failure of at least 300 ms. (See note 1.)
2. When connected to the S8VS-06024, S8VS-12024,
S8VS-18024, S8VS-24024, or S82J-10024@@ Power Supply,
the output voltage may increase by approximately 4 V for
several 10 s of milliseconds after recovery from the momentary
power failure. If any adverse effect is foreseen, connect a diode
as shown below based on the guidelines given below.
S8TS Series: S8TS-06024@
S8VS Series: S8VS-01524, S8VS-03024,
S8VS-06024 (See note 2.), S8VS-06024A/B,
S8VS-09024, S8VS-09024S, S8VS-09024A@/B@,
S8VS-12024 (See note 2.), S8VS-12024A@/B@,
S8VS-18024 (See note 2.), S8VS-18024A@/B@,
S8VS-24024 (See note 2.), S8VS-24024A@/B@,
and S8VS-48024A/B
S8JX Series: S8JX-N01524@@, S8JX-N03024@@,
S8JX-N05024@@, S8JX-N10024@@,
S8JX-N15024@@, S8JX-N30024@@,
S8JX-N60024@@
S8VM Series:S8VM-01524@@, S8VM-03024@@, S8VM-05024@@,
S8VM-10024@@, S8VM-15024@@,
S8VM-30024C, S8VM-60024C, and S8VM-15224C
Note: 1. The backup current must be less than 5 A (parallel operation
connection is required if the backup current exceeds 2.5 A)
and the Buffer Block must be fully charged. If three or more
S8T-DCBU-02 Buffer Blocks are used in parallel operation
and the backup current exceeds 5 A, the momentary power
failure time that can be compensated for will be reduced.
AC input
4V
I/O terminal voltage
Guidelines for Selecting Diode
Type: Schottky barrier diode
Withstanding voltage (VRRM): At least twice the rated output voltage
Forward current (IF): At least twice the rated output current
S8T-DCBU-02
Power Supply
− +
Diode
3
S8T-DCBU-02
Power Supply To Be Connected
The power consumption of the S8T-DCBU-02 is approximately 10 W,
so make sure that the output capacity of the connected Power
Supply is sufficient.
If the S8T-DCBU-02 is connected to a previously installed power
supply, the voltage may drop due to the power supply's overload
protection, or backup operations may not be possible.
Note: Connect a Power Supply within the specified derating range,
considering the power consumption of the S8T-DCBU-02.
Selecting the Power Supply
Determining the Output Capacity
Check capacities of devices to be
connected.
Calculate the total of these capacities.
Calculate the required capacity.
Selecting the Power Supply
Check the output hold time and restart
time.
Select an appropriate Power Supply.
Check the derating curve.
3. Calculating the Required Output Capacity
Determine the rate of allowance and apply this allowance rate to the total
capacity calculated above to obtain the output capacity required by the
Power Supply. Be sure to provide a sufficient allowance rate.
Calculation of the Total Power Supply Capacity
Required
Total
output capacity
capacity ÷
>
(W) of the
(W)
Power Supply
Allowance
rate
Example: Output voltage: 24 V
Capacities of devices: 36 W (output current: 1.5 A)
Allowance rate: 0.8
Required output capacity of the Power Supply > (36 W
+ 9.6 W) ÷ 0.8 = 57 W
Therefore, an S8TS-06024@ Power Supply,
S8VS-06024@ Power Supply, or a Power Supply with a
larger capacity is required.
Selecting the Power Supply To Be Connected
1. Checking the Output Hold Time and Restart Time of
the Connected Power Supply
The relation between the momentary power failure time and the backup
time required to compensate the failure is shown in the following
illustration. As shown by the illustration, the backup time required from
the S8T-DCBU-02 Buffer Block depends on the connected Power Supply
even for the same momentary power failure time.
Calculation of the Required Backup Time
Required
backup time >
Momentary power
failure
time
Restart time
of Power
Supply
+
Output hold
− time of Power
Supply
Relation between Momentary Power Failure and Backup Time
Momentary power
failure time
Determining the Output Capacity
1. Checking Capacities of Devices To Be Connected
AC input
Check the capacities (W) of the devices to be connected.
I/O terminal voltage
2. Calculating the Total Capacity (Including That of the
S8T-DCBU-02 Buffer Block)
The S8T-DCBU-02 Buffer Block will consume the following power.
Add this to the above capacities (W) of the devices to be
connected to obtain the total capacity.
Vin = 24 V: 9.6 W max. (during charging)
Vin = 28 V: 11.2 W max. (during charging)
Calculation of the Total Capacity
Total
capacity =
(W)
Capacities
of devices
(W)
+
Power consumption (W) of the
S8T-DCBU-02
Output hold time of
Power Supply
Backup time
Restart time of
Power Supply
The output hold time and restart time of each Power Supply are shown in
Power Supply Output Hold Times (Reference Values) on page 12 and
Power Supply Restart Times (Reference Values) on page 13.
Example: S8T-DCBU-02: 1 Unit
Connected Power Supply: S8TS-06024@
Load current: 1 A
AC input voltage: 200 VAC
Assumed momentary power failure time: 300 ms
Required backup time > 300 ms + 270 ms - 100 ms = 470 ms
Refer to the graphs under Backup Time on page 10 to
check whether the backup time is sufficient.
2. Selecting the Power Supply
After obtaining the output capacity required for the Power Supply
and checking its output hold time and restart time as described
above, select an appropriate Power Supply from the list under
Connectable Power Supplies on page 3.
3. Checking the Derating Curve
Confirm that the total output capacity calculated in step 2,
Calculating the Total Capacity, under Determining the Output
Capacity is within the derating curve of the Power Supply. If the
capacity exceeds the derating curve, increase the Power Supply
capacity or use forced air cooling to reduce the ambient operating
temperature.
4
S8T-DCBU-02
Mounting
Input Voltage
Mounting Direction
Input voltage range: 24 to 28 VDC
Standard mounting
Yes
Face-up mounting
No
Other mounting
No
Confirm that an input voltage of at least 24 V is being supplied to the
S8T-DCBU-02 input terminals.
Output Voltage
Improper mounting will interfere with heat dissipation and may
occasionally result in deterioration of or damage to internal parts.
Use standard mounting only.
Standard mounting
Correct
Face-up mounting
Incorrect
The output voltage for the backup operation is automatically adjusted
internally by detecting the input voltage. The backup operation is
started when the input voltage drops 2 V.
Note: The output voltage during the backup operation is a maximum
of 2 V lower than the voltage input at an input voltage of
24 VDC.
Serial Connection
Two Blocks cannot be connected in series to increase the output
voltage to 48 V or to create positive and negative outputs.
Parallel Connection
Connecting to the S8TS-06024@
When connecting one or more S8T-DCBU-02 Blocks to the
S8TS-06024@ using Bus Line Connectors, connect them to either
the left or right end of the Blocks. Heat dissipation will be interfered
with if the S8T-DCBU-02 Blocks are not connected to the end.
Correct
S8T-DCBU-02
L
N
L
INPUT
N
OUTPUT
DC24V
2.5A
+V
OUTPUT
V.ADJ
DC LOW
DC24V
2.5A
-V
+V
L
50/60Hz
AC100
-240V
1.0A
L
N
N
+V
-V
DC ON
DC LOW
+V
DC LOW
OUTPUT
V.ADJ
DC24V
2.5A
-V
Class2
Power
Supply
DC LOW
OUTPUT
V.ADJ
DC24V
2.5A
-V
DC ON
Class2
Power
Supply
DC LOW
OUTPUT
V.ADJ
DC LOW
+V
-V
Class2
Power
Supply
+V
When connecting the S8T-DCBU-02 with a Bus Line Connector, use
the S8T-BUS03 Bus Line Connector, which connects only the DC
lines. (The AC lines are not connected.) If the backup current
exceeds 5 A when three or more Buffer Blocks are connected in
parallel, the backup time will be greatly reduced. Refer to Backup
Time on page 10 for details on the backup time during parallel
operation.
N
INPUT
50/60Hz
AC100
-240V
1.0A
+V
DC ON
Class2
Power
Supply
DC LOW
N
INPUT
L
N
-V
DC ON
-V
L
50/60Hz
AC100
-240V
1.0A
+V
-V
Class2
Power
Supply
V.ADJ
N
INPUT
L
N
+V
DC LOW
S8T-DCBU-02
50/60Hz
AC100
-240V
1.0A
L
N
-V
DC ON
Incorrect
L
INPUT
50/60Hz
AC100
-240V
1.0A
L
DC LOW
Correct
S8T-DCBU-02
The output current and backup time for the backup operation can be
increased by connecting Buffer Blocks in parallel.
Maximum number of Buffer Blocks for parallel operation: 4
DC LOW
DC24V
2.5A
-V
+V
Note: Although the number of Buffer Blocks that can be connected
when using the S8TS-06024@ is five when calculated from the
current capacity of the Bus Line Connector, only a maximum of
four S8T-DCBU-02 can actually be connected in parallel.
Connecting to S8TS-06024@
Wiring Connections
When connecting to the S8TS-06024@, always use the S8T-BUS03
Bus Line Connector. This Connector connects only the DC lines. It
does not connect AC lines.
A load can be connected to either the Power Supply side or the
S8T-DCBU-02 side.
S8T-BUS03 Bus Line Connector
S8TS-06024@
L
N
S8TS-06024@
L
N
INPUT
INPUT
50/60Hz
AC100
-240V
1.0A
50/60Hz
AC100
-240V
1.0A
L
L
N
N
+V
+V
-V
-V
DC ON
DC ON
Class2
Power
Supply
DC LOW
OUTPUT
V.ADJ
DC LOW
The S8T-BUS03 Bus Line Connector is equipped with a selector to
prevent incorrect connection to a power supply unit with a different
output voltage specification. Slide the selector to the 24 V position.
DC24V
2.5A
-V
+V
Class2
Power
Supply
DC LOW
OUTPUT
V.ADJ
DC LOW
DC24V
2.5A
-V
+V
Selector
Note: Use the largest wire size possible and keep the wiring distance
as short as possible. If the voltage drop caused by the wiring
material is too large, the backup operation may not be
sufficient.
5
S8T-DCBU-02
Inserting and Removing the Bus Line
Connector
Operation Check and Periodic Inspection
H5CX-A
Digital Timer
Pay attention to the following points to maintain electric characteristics.
• Do not insert and remove a Bus Line Connector more than 20 times.
• Do not touch the Bus Line Connector terminals.
• To remove a Bus Line Connector, insert a flat-blade screwdriver
alternately at both ends.
SW
E mode: Set for NPN input.
6
7
8
9
10
Not
used
Not
used
Not
used
11
12
13
1
2
3
4
5
AC
Mounting to DIN Rail
To mount the Buffer Block to DIN Rail, hook portion (A) of the Buffer
Block onto the Rail and press the Buffer Block in direction (B).
(A)
Load
4. Check to confirm that the expected backup operation was
performed. The operation of the BACKUP indicator and BACKUP
output should be as shown below during the backup operation.
Check these as well.
(B)
To dismount the Buffer Block, pull down portion (C) with a flat-blade
screwdriver and pull out the Buffer Block.
BACKUP Indicator
BACKUP output relay
3
BACKUP
4
Indicator lit
(BACKUP: Red)
30 mm min.
(C)
Relay (BACKUP)
(3)-(4): closed
Note: Check the backup operation under conditions that are safe and
will cause no problems if the backup operation fails.
Rail stopper
Checking Operation and Periodic
Inspection
After connecting the Buffer Blocks, check the Buffer Block using the
following procedure to confirm that it operates correctly for
momentary power failures on the AC input. Use this procedure for
periodic inspection as well.
1. Turn ON the AC power of the connected power supply.
2. Check the READY indicator on the S8T-DCBU-02 to confirm that
it is lit.
READY Indicator
READY output relay
1
READY
2
Indicator lit
(READY: Green)
Relay (READY)
(1)-(2): open
Note: Up to 60 seconds is required to charge the internal capacitor
before the indicator lights.
3. Use a timer and create a momentary power failure on the AC
input of the expected length of time. Considering variations in
characteristics, using 140% or more of the power failure time is
recommended.
6
S8T-DCBU-02
■ Functions
The READY indicator and READY output will function as shown
below when the internal capacitor is being charged.
READY Indicator
READY Operation
The READY indicator and READY output will function as shown
below after the internal capacitor is completely charged and the
Buffer Block is ready to perform the backup operation. Up to 60
seconds is required for the capacitor to charge completely.
READY Indicator
READY output relay
1
READY
2
Indicator lit
(READY: Green)
Relay (READY)
(1)-(2): open
The following status will occur if there is an error in the charge
voltage of the internal capacitor or the output voltage of the
S8T-DCBU-02.
READY Indicator
READY output relay
1
READY
2
Indicator not lit
(READY: Green)
Relay (READY)
(1)-(2): closed
The backup operation will not be sufficient or will fail under the above
status. If this status occurs, immediately remove the cause of the
error, such as the following causes.
1. The connected DC voltage is 23 V or less.
2. The terminals have been connected in reverse, a wire is broken,
or wiring is otherwise not correct.
3. The overvoltage protection circuit has operated.
4. The overcurrent protection circuit of the connected power supply
has operated.
Note: The contact capacity of the output relay is 0.1 A at 24 VDC.
Backup Operation
The S8T-DCBU-02 will switch to the backup operation if a voltage
drop is detected on the connected power supply.
BACKUP Indicator
READY output relay
1
READY
2
Indicator not lit
(READY: Green)
Relay (READY)
(1)-(2): closed
Note: 1. The contact capacity of the output relay is 0.1 A at 24 VDC.
2. The backup operation may be repeatedly performed if the
connected power supply is overloaded. Remove the cause
of the overload immediately.
3. The backup operation does not detect drops in the AC input.
Overload Protection
The S8T-DCBU-02 is provided with an overload protection function
that protects the Power Supply from possible damage due to shortcircuits and overcurrents by automatically decreasing the output if
the overcurrent reaches 5.8 to 6.8 A. When the output current falls
within the rated range, the overload protection function is
automatically cleared.
Note: Internal parts may occasionally deteriorate or be damaged if a
short-circuited or other overcurrent state continues during
operation.
Overvoltage Protection
If a voltage that is higher than the specified input voltage range is
input or the output voltage exceeds the specified voltage, the
overvoltage protection circuit will operate at between 31 and 36 V to
shut OFF the output voltage and protect the load from damage due
to overvoltages. To reset the Buffer Block, turn OFF the input power
for at least 1 minute and then turn it back ON.
Note: 1. Remove the cause of the overvoltage before turn the input
power back ON.
2. The backup operation will not be performed when the
overvoltage protection is performed to shut OFF the output.
Reverse Connection Protection
The S8T-DCBU-02 will be protected even if the positive and negative
I/O terminals are connected in reverse.
BACKUP output relay
3
BACKUP
4
Indicator lit
(BACKUP: Red)
Relay (BACKUP)
(3)-(4): closed
When the backup operation functions, the energy in the internal
capacitor will be discharged to the load. When the voltage of the
power supply then recovers, the S8T-DCBU-02 will start charging the
capacitor. Up to 60 seconds is required to charge the capacitor
completely. The backup operation may therefore not function for the
required period if the backup operation starts while the capacitor is
being charged.
The following are examples in which the backup operation may not
be sufficient.
1. The backup operation starts within 60 seconds after turning ON
the power.
2. The backup operation is started consecutively within 60 seconds
of the previous backup operation.
3. A rapid change in the load or other factor causes the DC voltage
to drop, resulting in the backup operation, and then the backup
operation occurs again within 60 seconds.
7
S8T-DCBU-02
Nomenclature
Buffer Block
S8T-DCBU-02
8
7
1
2
3
4
5
6
13
14
12
9
10
11
14
A, B: READY Output: NC contact
I: Protective Earthing Terminal (
C, D: BACKUP Output: NC contact
J: I/O Terminal (−V)
E: READY Indicator (READY: Green)
K: I/O Terminal (+V)
F: BACKUP Indicator (BACKUP: Red)
L: Rail Stopper
G: NC
M: Connecting part of Bus Line Connector
H: Slider
N: Terminal Cover
)
Bus Line Connector
S8T-BUS03
A: Selector
B:
Bus Line Connector terminal
C: NC
D: DC Bus Line Connector Terminal (+V)
E: DC Bus Line Terminal (−V)
8
S8T-DCBU-02
Engineering Data
Current during backup operation (A)
■ Derating Curve
Note: 1. If natural air circulation is limited, use the forced air cooling to prevent overheating.
2. The ambient temperature is measured at a point 50 mm below the Buffer Block.
3. Check the derating curve for each power supply to be connected. Refer to Connections
to the S8TS (Reference Values) on page 11 for details on the derating curves when
connecting the Buffer Block to the S8TS-06024@.
2.5
2.0
1.5
1.0
0.5
−30 −20 −10
0
10
20
30
40
50
60
70 80
Ambient temperature (°C)
■ Time Charts
Momentary Power Failure or Instantaneous
Voltage Drop
Startup
AC input
AC input
Internal capacitor voltage
Internal capacitor voltage
I/O terminal voltage
I/O terminal voltage
Output current of the
S8T-DCBU-02
Output current of the
S8T-DCBU-02
open
READY output
open
READY output
closed
closed
READY indicator
READY indicator
open
BACKUP output
open
BACKUP output
closed
closed
BACKUP indicator
BACKUP indicator
Power supply output hold time
Backup time
Charging
time
Power supply
restart time
Power Supply Interrupted or Stopped
AC input
Internal capacitor voltage
I/O terminal voltage
Output current of the
S8T-DCBU-02
open
READY output
closed
READY indicator
2 seconds (typical)
open
BACKUP output
closed
BACKUP indicator
Backup time
9
S8T-DCBU-02
■ Backup Time
Parallel Operation with 2 Blocks
10
Vin = 28 V typical
Vin = 24 V typical
Backup time (s)
Backup time (s)
Single Operation
10
Vin = 24 V typical
Vin = 24 V guarantee
Vin = 24 V guaranteed
1
1
0.1
0.1
0.0
0.5
1.0
1.5
2.0
0.0
2.5
1.0
2.0
3.0
10
Vin = 24 V typical
5.0
Parallel Operation with 4 Blocks
Backup time (s)
Backup time (s)
Parallel Operation with 3 Blocks
4.0
Load current (A)
Load current (A)
10
Vin = 24 V typical
Vin = 24 V guaranteed
Vin = 24 V guaranteed
1
1
0.1
0.1
0.0
1.5
3.0
4.5
6.0
7.5
Load current (A)
0.0
2.0
4.0
6.0
8.0
10.0
Load current (A)
Note: 1. The backup time may be reduced if a fixed power load (such as a DC-DC converter) is connected.
2. If the input voltage increases, the output voltage for the backup operation will also increase, reducing the backup time due to the higher
power consumption of the load.
10
S8T-DCBU-02
■ Connections to the S8TS (Reference Values)
Derating Curves of the S8TS-06024@ When Connecting to the S8T-DCBU-02
*1
100 to 120 VAC 1
*2
50 W
50 W
100 to 120/200
to 240 VAC
1
*3
44 W
110 W
1
*4
2 (+1)
1
*5
98 W
3
1
*6
170 W
3 (+1)
1
*7
152 W
4
1
*8
230 W
1
*9
206 W
*10
40 W
100 to 120 VAC 2
*11
40 W
100 to 120/200
to 240 VAC
2
*12
34 W
2
*13
100 W
2 (+1)
2
*14
88 W
3
2
*15
160 W
3 (+1)
2
*16
142 W
200 to 240 VAC 3
*17
30 W
100 to 120 VAC 3
*18
30 W
100 to 120/200
to 240 VAC
3
*19
24 W
3
*20
90 W
3
*21
78 W
200 to 240 VAC 4
*22
20 W
100 to 120 VAC 4
*23
20 W
200 to 240 VAC 2
1 (+1)
2
1
1 (+1)
2
2 (+1)
Output power (W)
1
180
*6
160
140
120
*7
100
Output power (W)
1
80
40
*2
*3
0
–30 –20 –10 0
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
*8
200
*9
150
45
40
*11
35
30
25
120
*13
100
40
80
60
30
20
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
100
90
*20
80
70
60
*21
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
25
20
15
*22
50
15
*19
5
40
10
30
10
40
20
*18
25
Output power (W)
100
35
20
*10
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
Output power (W)
*16
*14
*12
5
140
80
10
20
*15
10 20 30 40 50 60
Ambient temperature (°C)
60
20
50
180
*5
80
20
*1
15
160
*4
100
40
10
250
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
120
60
20
100
40
Output power (W)
50
30
60
120
60
Output power (W)
200 to 240 VAC 1
4 (+1)
Note: 1. “+1” indicates the addition of one more S8TS-06024@ Basic
Block if a redundant system is used.
2. If there is a derating problem, use forced air cooling.
3. The ambient temperature is specified at a place 50 mm
below the Product.
4. The energy consumption of the S8T-DCBU-02
(approximately 10 W per Block) from the S8TS-06024@
reduces the total output capacity when more than one
S8TS-06024@ Block is connected.
5. The rated output current of the S8T-DCBU-02 is 2.5 A per
Block regardless of the number of S8TS-06024@ Basic
Blocks that are connected.
Rated
output
power
Output power (W)
2
Derating
curve
Output power (W)
1 (+1)
Number of
S8T-DCBU-02
Blocks
Output power (W)
1
S8TS-06024@
rated input
Output power (W)
Number of
S8TS-06024@
Blocks
*17
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
*23
20
5
10
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
0
–30 –20 –10 0 10 20 30 40 50 60
Ambient temperature (°C)
11
S8T-DCBU-02
■ Power Supply Output Hold Times (Reference Values)
The rated currents are given for load currents.
Series
S8TS
Model
number
06024@
S8VS
01524
03024
06024@
09024@@
12024@@
18024@@
24024@@
48024@
Load current
(A)
0.5
1
1.5
2.1
0.1
0.2
0.25
0.25
0.5
0.75
0.9
0.5
1
1.5
2.1
1
2
2.95
1
2
3
4
4.2
2
4
6
6.3
2.5
5
7.5
8.4
2.5
5.0
7.5
10.0
Output hold time (ms)
100 VAC
200 VAC
163
167
98
100
70
70
56
58
114
472
78.4
344
68.8
300
124
526
72
334
47.4
242
36.8
204
158
664
88
382
57
266
36
194
118
508
58
274
34
176
262
262
148
148
102
102
75
75
72
72
225
230
107
120
71
75
65
70
170
170
68
72
52
56
40
44
291
268
147
157
97
103
75
77
Series
S8VM
Model
number
01524@@
03024@@
05024@@
10024@@
15024@@
30024C
60024C
15224C
Load current
(A)
0.1
0.2
0.25
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.1
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0.5
1.0
1.5
2.0
2.5
3.0
3.5
3.7
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.3
2.5
5.0
7.5
10.0
2.5
5.0
7.5
10.0
2.5
5.0
7.5
10.0
Output hold time (ms)
100 VAC
200 VAC
94
414
66
308
52
258
154
492
114
516
84
414
72
340
56
290
46
248
36
218
28
202
22
166
218
218
164
170
114
110
84
84
68
72
58
54
44
44
36
38
34
32
28
30
240
232
136
132
94
92
70
70
52
56
40
44
38
38
32
30
332
334
192
196
136
140
102
108
80
86
66
66
60
58
52
50
44
44
54
54
34
38
162
169
84
84
52
57
43
41
304
306
170
158
116
121
88
88
680
520
644
517
638
515
635
510
12
S8T-DCBU-02
■ Power Supply Output Hold Times (Reference Values)
The rated currents are given for load currents.
Series
Model number
Load current (A)
Output hold time (ms)
100 VAC
S8JX
N05024@@
N10024@@
N15024@@
200 VAC
0.5
112
520
1
62
290
1.5
42
208
1.7
38
186
1
104
524
2
58
288
3
36
184
3.7
30
150
1.5
142
648
3
68
334
4.5
46
226
5.3
38
188
■ Power Supply Restart Times (Reference Values)
Series
Model number
Restart time (ms)
Momentary power failure time:
300 ms
100 VAC
Momentary power failure time:
500 ms
200 VAC
100 VAC
Momentary power failure time:
1,000 ms
200 VAC
100 VAC
200 VAC
S8TS
06024@
320
270
320
270
345
290
S8VS
01524
5.4
5.6
6
4.8
6.2
5
03024
390
110
456
140
576
196
06024
330
8
424
200
496
300
06024A/06024B
220
5
280
95
380
155
09024/09024S
312
6
378
186
512
308
09024A@/09024B@ 220
5
286
100
390
157
12024@@
360
248
400
288
432
322
18024
288
252
306
276
388
356
18024A@/18024B@ 230
198
247
216
263
235
24024
266
24024A@/24024B@ 5
S8VM
S8JX
236
272
248
328
300
5
5
5
15
5
48024@
53
3
267
229
278
242
01524@@
356
152
376
164
420
180
03024@@
350
150
372
160
420
184
05024@@
240
196
248
196
270
216
10024@@
248
208
256
208
280
220
15024@@
250
226
272
216
300
236
30024C
62
48
64
50
74
60
60024C
366
198
380
200
436
276
15224C
556
472
568
480
576
488
N05024@@
180
120
204
138
280
172
N10024@@
186
128
210
144
268
106
N15024@@
222
12
246
152
320
208
13
S8T-DCBU-02
Dimensions
Note: All units are in millimeters unless otherwise indicated.
■ Buffer Block and Bus Line Connector
Buffer Block
S8T-DCBU-02
Six, M4 with
square washer
105
10
4
2.5
120
10
43
5
80.7
35
120
5.6
(Sliding: 15 max.)
Bus Line Connector
S8T-BUS03
8.6 2
24
10
7.6
5.5
Sliding
5
13
70
5.5
Sliding
2
2.5
18
4
35
14
S8T-DCBU-02
■ DIN Rails (Order Separately)
Mounting Rails (Material: Aluminum)
PFP-100N
PFP-50N
7.3±0.15
4.5
27±0.15
35±0.3
15
25
10
25
25
1,000 (500)*
10
25
15 (5)*
1
* Values in parentheses
are for the PFP-50N.
PFP-100N2
16
4.5
35±0.3 27
15
25
10
25
25
1,000
10
25
15
24
29.2
1
1.5
End Plate
PFP-M
10
6.2
1.8
Eight, M4
pan-head screw
1
50
35.5 35.3
1.8
11.5
10
M4 spring
washer
1.3
4.8
15
S8T-DCBU-02
Safety Precautions
Refer to Safety Precautions for All Power Supplies.
!CAUTION
Installation and Environment
Minor fires may occasionally occur or wires may become
detached causing the backup operation to fail if screws
are not tightened properly. Tighten terminal screws to a
torque of 1.08 N·m so that they do not become loose.
Minor electric shock may occasionally occur. Do not
remove the connector cover unless connecting the Bus
Line Connector.
Mounting
Improper mounting will interfere with heat dissipation and may
occasionally result in deterioration or damage of internal parts. Use
the specified mounting method only.
Ensure sufficient heat dissipation when installing the Product to
increase its long-term reliability.
Natural cooling is used, so mount the S8T-DCBU-02 so that there is
airflow around it.
S8TS-06024@
Minor electric shock may occasionally occur and the
backup operation will fail if the connector becomes
disconnected. Be sure to lock the slider and rail stopper
securely when connecting the Basic Block and the S8TDCBU-02 to prevent the connector from being
disconnected due to vibration.
*1
Operation
Minor burns may occasionally occur. Do not touch the
S8T-DCBU-02 while power is being supplied or
immediately after power is turned OFF.
Minor electric shock may occasionally occur. Do not add
or remove the S8T-DCBU-02 while power is being
supplied.
Maintenance
Minor electric shock may occasionally occur. Do not
disassemble the S8T-DCBU-02 or touch the interior of
the S8T-DCBU-02.
■ Precautions for Safe Use
Observe the following precautions to ensure safety when using the
S8T-DCBU-02.
*1
*1
L
N
L
INPUT
50/60Hz
AC100
-240V
1.0A
50/60Hz
AC100
-240V
1.0A
L
L
N
N
+V
+V
-V
-V
DC ON
DC ON
Class2
Power
Supply
DC LOW
*1
+V
DC LOW
*1
*3
OUTPUT
V.AD J
DC24V
2.5A
-V
Class2
Power
Supply
DC LOW
OUTPUT
V.AD J
DC LOW
*2
N
INPUT
Internal parts may occasionally deteriorate or be
damaged and the backup operation may not be
sufficient. Do not use the S8T-DCBU-02 for applications
that subject the load to frequent inrush currents or
overload currents.
The S8T-DCBU-02 may occasionally be damaged. Do
not allow any clippings or cuttings to enter the
S8T-DCBU-02 during mounting.
*2
S8T-DCBU-02
DC24V
2.5A
-V
+V
*1
*3
*4
*4
*1. Convention of air
*2. 75 mm min.
*3. 75 mm min.
*4. 20 mm min.
Installation/Wiring
Minor electric shock or malfunction may possibly occur. Connect the
ground wire completely.
Minor fires may possibly occur. Check the terminals to be sure they
are wired correctly.
Do not apply more than 100-N force to the terminal block when
tightening the terminals.
Close the terminal cover to help prevent short-circuiting terminals
with foreign objects.
Be sure to remove the sheets covering the S8T-DCBU-02 for
machining before turning ON the power so that they do not interfere
with heat dissipation.
Use the wiring material specified in the following table to protect
wires from smoking or ignition due to abnormal loads. Also, the
backup operation may not be sufficient due to voltage drop in the
wiring material if thin wiring materials are used.
I/O Terminals
Load
current
Number of
connected
S8T-DCBU-02
Recommended wire diameter
Up to 2.5 A
1
Setting and Selecting Power Supply to
be Connected
AWG 14 to 20 (cross-sectional
area: 0.517 to 2.081 mm2)
Up to 5.0 A
2
AWG 14 to 18 (cross-sectional
area: 0.823 to 2.081 mm2)
Do not connect a power supply other than the ones specified below.
Up to 7.5 A
3
Specified Power Supply (SELV Power Supply):
S8TS Series, S8VS Serie.
AWG 14 to 16 (cross-sectional
area: 1.309 to 2.081 mm2)
Up to 10 A
4
AWG 14 (cross-sectional area:
2.081 mm2)
Only power supplies with an output voltage of 24 V and an output
capacity of 9.6 W or more can be connected.
When selecting the power supply to be connected, take both the
operation current and power of S8T-DCBU-02 into consideration,
allowing sufficient margin.
Signal output terminals: AWG 16 to 22 (Cross-sectional area:
0.326 to 1.309 mm2)
(Wire stripping length: 11 mm)
Installation Environment
Do not use the S8T-DCBU-02 in locations subject to shocks or
vibrations. In particular, install the S8T-DCBU-02 as far away as
possible from contactors or other devices that are a vibration source.
Install a PFP-M End Plate on each end of the product.
Install the S8T-DCBU-02 well away from any sources of strong, highfrequency noise and surge.
16
S8T-DCBU-02
Ambient Operating Environment and Storage Environment
Store the S8T-DCBU-02 at an ambient temperature of −25 to +65°C,
and a relative humidity of 25% to 90%.
The internal parts may occasionally deteriorate or be damaged. Do
not use the S8T-DCBU-02 outside the derating range (i.e., under
conditions indicated by the shaded area (
) in the derating curve
diagram on page 9.)
Use the S8T-DCBU-02 at a relative humidity of 25% to 85%.
Do not use the S8T-DCBU-02 in locations subjected to direct
sunlight.
Do not use the S8T-DCBU-02 in locations where liquid, foreign matter, or corrosive gases may enter the interior of the S8T-DCBU-02.
Precautions in Using
After connecting the devices to the S8T-DCBU-02, check whether
sufficient backup is performed correctly by operating the
S8T-DCBU-02.
Check the load current using the actual system in advance to confirm
that there is sufficient leeway in the backup time.
Check to confirm that the READY indicator and the output function
correctly. The backup operation may not be sufficient if the READY
indicator and output do not function correctly.
The S8T-DCBU-02 will perform the backup operation not only for
momentary power failures or voltage drops, but also when the input
power is OFF. The backup time is particularly long for light loads.
Check the devices connected to the S8T-DCBU-02 to be sure it has
stopped operation correctly.
Periodic Inspection and Periodic Replacement
The S8T-DCBU-02 contains built-in electrolytic capacitors, which
have a limited life. Perform periodic inspection and replacement. The
performance of the electrolytic capacitor will deteriorate as the total
operating time increases, eventually leading to insufficient
performance. Refer to the following guidelines for periodic
replacement.
Ambient
temperature
Guideline of replacement
With space between Connected to S8TS
the Units
30°C max.
15 years
40°C
12 years
15 years
8.5 years
50°C
6 years
5.5 years (See note.)
60°C
3 years
---
Note: The load ratio of the S8TS is limited to 60% due to the derating
curve.
Handling the Bus Line Connector
Do not drop the Bus Line Connector or subject it to strong shock.
Do not connect and disconnect the Bus Line Connector more than
20 times. Also, do not touch the terminals on the Bus Line
Connector. Connection failure may cause deterioration of electric
performance.
17
S8T-DCBU-02
Troubleshooting
The following table lists the errors that may occur when the S8T-DCBU-02 is used, along with their probable causes and remedies. Check the
relevant items.
When
Cause
During installation The S8TS-06024@ and
S8T-DCBU-02 cannot be
connected.
When checking
operation
(Refer to Checking
Operation and Periodic Inspection
on page 6.)
The S8TS-06024@ when
connected does not operate in step 2 of the operation checking procedure.
The READY indicator on
the S8T-DCBU-02 does not
light in step 2 of the operation checking procedure
when connected to the
S8TS.
The READY indicator on
the S8T-DCBU-02 does not
light in step 2 of the operation checking procedure.
Description
The Bus Line Connector is provided with a selector to prevent misconnection of 12-V and 5-V
S8TS Blocks. Connection will not be possible if
the selector is set for the wrong type of Block.
The AC line is not connected by the
S8T-BUS03 Bus Line Connector when the S8TDCBU-02 is connected.
The S8T-DCBU-02 may be connected between
two S8TS-06024@ Blocks.
Power is supplied via the S8T-BUS03 Bus Line
Connector when the S8T-DCBU-02 and S8TS
are connected. The Bus Line Connector may
not be connected.
A Bus Line Connector that does not connect the
DC line (such as the S8T-BUS02) may be connected.
Up to 60 seconds is required to completely
charge the internal capacitor after the input
power has been turned ON. The READY indicator will not turn ON immediately after the input
power is turned ON.
The positive and negative I/O terminals on the
S8T-DCBU-02 may be connected in reverse or
the power supply may be connected to an incorrect terminal (e.g., an NC terminal).
The voltage input to the S8T-DCBU-02 may be
23 V or less.
Overcurrent protection on the connected power
supply may have operated and the voltage may
have dropped to below 23 V.
The backup operation is not The restart time of the connected power supply
performed for the expected after recovery from momentary power failures
backup time in step 4 of the may be too long.
operation checking procedure.
The voltage during the backup operation may
be high, increasing the power consumption during the backup operation.
The output current during the backup operation
may be higher than expected.
The voltage output for the
backup operation is low in
step 4 of the operation
checking procedure.
Overcurrent protection on the connected power
supply may have operated and the voltage input
to the S8T-DCBU-02 may have dropped to below 24 V.
The wiring to the load is too long or too thin,
causing excessive voltage drop.
When checking
operation
(Refer to Checking
Operation and Periodic Inspection
on page 6.)
The voltage output for the
backup operation is low in
step 4 of the operation
checking procedure.
Overcurrent protection may have operated on
the S8T-DCBU-02.
Remedies
Set the selector on the S8T-BUS03 Bus Line
Connector to 24 V.
Refer to S8T-BUS03 Bus Line Connector on
page 5.
Connect the S8T-DCBU-02 to the right or left
end of the connected Blocks. Refer to Mounting
on page 5.
Connect the S8T-DCBU-02 and S8TS-06024@
using an S8T-BUS03 Bus Line Connector. Refer to Basic Configuration on page 1.
Connect the S8T-DCBU-02 and S8TS-06024@
using an S8T-BUS03 Bus Line Connector. Refer to Basic Configuration on page 1.
Check that the READY indicator lights after 60
seconds has passed since turning ON the input
power. Refer to READY Operation on page 7.
Check the wiring to be sure it is correct. The internal circuits of the S8T-DCBU-02 will be protected even if the positive and negative
terminals are reversed. Correct the polarity and
turn ON the power supply again. Refer to Reverse Connection Protection on page 7.
Check the I/O terminals on the S8T-DCBU-02
and adjust the voltage output using the output
voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5.
The S8T-DCBU-02 consumes 0.4 A, so the rated current of the connected power supply cannot be delivered completely to the load.
Increase the capacity of the connected power
supply. Refer to Selecting the Power Supply on
page 4.
The momentary power failure time differs from
the backup time required to compensate for it.
Change to a power supply with a shorter restart
time or connect S8T-DCBU-02 Blocks in parallel
to increase the backup time. Refer to Selecting
the Power Supply on page 4.
The output voltage during the backup operation
is automatically adjusted based on detecting
the voltage input to the S8T-DCBU-02. Connect
S8T-DCBU-02 Blocks in parallel to increase the
backup time. Refer to Parallel Connection on
page 5.
Connect S8T-DCBU-02 Blocks in parallel to increase the backup time. Refer to Parallel Connection on page 5.
The S8T-DCBU-02 consumes 0.4 A, so the rated current of the connected power supply cannot be delivered completely to the load.
Increase the capacity of the connected power
supply. Refer to Selecting the Power Supply on
page 4.
Use the thickest wire and shortest distance possible. The output voltage during backup will be
up to 2 V lower than the input voltage. Refer to
Wiring Connections on page 5.
Allow for leeway for the load capacity in the application or increase the output current during
the backup operation by connecting
S8T-DCBU-02 Blocks in parallel. Refer to Parallel Connection on page 5.
18
S8T-DCBU-02
When
When checking
operation (Refer to
Checking Operation and Periodic
Inspection on
page 6.)
Cause
Description
The output hold time of the connected power
The BACKUP indicator
supply may be sufficient to handle the momendoes not light in step 4 of
the operation checking pro- tary power failure.
cedure.
The voltage output from the S8T-DCBU-02 during the backup operation may be lower because
overcurrent protection has operated in the
S8T-DCBU-02.
During actual
operation
The READY indicator is not The input voltage to the S8T-DCBU-02 may be
lit and the READY output is 23 V or less.
OFF.
The backup time has become shorter.
A voltage of approximately 31 V or higher may
be input to the I/O terminals of the
S8T-DCBU-02, causing the overvoltage protection circuit to operate.
It's possible that momentary power failures are
occurring consecutively.
It's possible that the characteristics of the builtin electrolytic capacitors have deteriorated.
There is chattering on the
READY output.
The input voltage of the S8T-DCBU-02 may be
very close to 23 V.
The output voltage is not restored even after the power
supply is restored following
a momentary power failure.
The backup operation is
performed repeatedly.
Protection on the connected power supply may
have operated, stopping the operation of the
power supply.
If more than one S8TS-06024@ Block is connected, one of the Blocks may be faulty.
An overcurrent status caused by load fluctuation may exist in the connected power supply.
Remedies
Use a timer to increase the power failure of the
AC input from the connected power supply and
confirm that the BACKUP indicator lights. Refer
to Selecting the Power Supply on page 4.
Allow for leeway for the load capacity in the application or increase the output current during
the backup operation by connecting
S8T-DCBU-02 Blocks in parallel. Refer to Parallel Connection on page 5.
Check the voltage at the I/O terminals of the
S8T-DCBU-02 and adjust the voltage output using the output voltage adjuster (V. ADJ) of the
connected power supply so that it is 24 V or
higher. Refer to Input Voltage on page 5.
Clear the overvoltage protection (turn OFF the
input power for 1 minute or longer and then turn
it back ON). Refer to Overvoltage Protection on
page 7.
The backup time is measured when the built-in
electrolytic capacitors are fully charged. If momentary power failures occur within one minute
of each other, the charge will not be complete
and the backup time will be shorter. Refer to
Backup Operation on page 7.
Electrolytic capacitors are built into the Block
and these capacitors have a limited life. When
an electrolytic capacitor exceeds its useful life,
its capacity will decrease and other characteristics will deteriorate. This will cause the backup
time to be shorter. Refer to Operation Check
and Periodic Inspection on page 6 and to Periodic Inspection and Periodic Replacement on
page 17.
Check the voltage at the I/O terminals of the
S8T-DCBU-02 and adjust the voltage output using the output voltage adjuster (V. ADJ) of the
connected power supply so that it is 24 V or
higher. Refer to Input Voltage on page 5.
Clear the protection function of the connected
power supply.
Replace the faulty S8TS-06024@ Block.
Allow for leeway for the load capacity in the application or increase the capacity of the connected power supply. Refer to Backup
Operation on page 7.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
19
Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses 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. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials 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 user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2015.6
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2015 All Right Reserved.
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