Omron K8DT-VS Series User manual

1
New Product
Single-phase Voltage Relay
K8DT-VS
Detect abnormal voltages applies to equipment to
protect against equipment failure.
Use in either overvoltage or undervoltage mode.
• Monitor AC or DC currents with one Relay.
• Settings for the operating value, hysteresis, and operating time.
• Width of 17.5 mm to reduce space required in panels.
• Push-In Plus Terminal that reduce wiring work.
The use of cage clamps enables wiring with bare stranded wires.
Double-insertion holes for crossover wiring (all terminals).
• UL listed for easy shipping to North America.
• Models added with transistor outputs for superior contact reliability.
Ordering Information
Single-phase Voltage Relay
Optional Cover
Front Cover
Refer to Safety Precautions on page 9.
Refer to page 8 for commonly asked questions.
For the most recent information on models
that have been certified for safety
standards, refer to your OMRON website.
Setting range Power supply
voltage Output Model
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
24 VAC/DC
Relay: SPDT contact output K8DT-VS2CD
Transistor K8DT-VS2TD
100 to 240 VAC
Relay: SPDT contact output K8DT-VS2CA
Transistor K8DT-VS2TA
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
24 VAC/DC
Relay: SPDT contact output K8DT-VS3CD
Transistor K8DT-VS3TD
100 to 240 VAC
Relay: SPDT contact output K8DT-VS3CA
Transistor K8DT-VS3TA
Appearance Model
Y92A-D1A

K8DT-VS
2
Ratings and Specifications
Input Range
*The range is selected using connected terminals.
Model Range *Connection
terminal Setting range Input impedance Overload capacity
K8DT-VS2@@
0 to 10 V AC/DC V1-COM 1 to 10 V AC/DC Approx. 120 kΩ
Continuous input at
115% of maximum input
10 s at 125%
(up to 600 VAC)
0 to 30 V AC/DC V2-COM 3 to 30 V AC/DC Approx. 320 kΩ
0 to 150 V AC/DC V3-COM 15 to 150 V AC/DC Approx. 1.6 MΩ
K8DT-VS3@@
0 to 200 V AC/DC V1-COM 20 to 200 V AC/DC Approx. 1.2 MΩ
0 to 300 V AC/DC V2-COM 30 to 300 V AC/DC Approx. 1.7 MΩ
0 to 600 V AC/DC V3-COM 60 to 600 V AC/DC Approx. 3.1 MΩ

K8DT-VS
3
Ratings Specifications
Power supply voltage K8DT-VS@@D: 24 VAC 50/60Hz, 24 VDC
K8DT-VS@@A: 100 to 240 VAC 50/60Hz
Power consumption 24 VAC/DC: 1.8 VA/1 W max.
100 to 240 VAC: 2.5 VA max.
Rated insulation
voltage 600 VAC
Operating value setting
range (SV)
10% to 100% of maximum setting range
K8DT-VS2: 1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
K8DT-VS3: 20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Operating value 100% operation at set value
Reset value setting range (HYS) 5% to 50% of operating value
Reset method
Manual reset/automatic reset (switchable)
Note: Manual reset: Turn OFF power supply for
1 s or longer.
Operating time setting
range (T) 0.1 to 30 s
Power ON lock time 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow,
Alarm outputs (ALM): Red
Input impedance Refer to Input Range on page 2.
Output form
Relay Output: SPDT contact
Transistor Output: 1
Switchable between normally open and normally
closed with a DIP switch setting.
Output relay ratings
Rated load
5 A at 250 VAC (Resistive load)
5 A at 30 VDC (Resistive load)
1 A at 250 VAC (Inductive load)
0.2 A at 48 VDC (Inductive load)
Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000
operations
3 A at 250 VAC or 30 VDC:
100,000 operations
Transistor output
ratings
Rated voltage: 24 VDC (maximum voltage: 26.4 VDC)
Maximum current: 50 mA DC
Ambient operating
temperature
 20 to 60°C (with no condensation or icing)
Storage temperature  25 to 65°C (with no condensation or icing)
Ambient operating
humidity 25% to 85% RH (with no condensation)
Storage humidity 25% to 85% RH (with no condensation)
Altitude 2,000 m max.
Applicable wires Stranded wires, solid wires, or ferrules
Applicable wire size 0.25 to 1.5 mm2(AWG24 to AWG16)
Wire insertion force 8 N max. for AWG20 wire
Screwdriver insertion force 15 N max.
Wire stripping length 8 mm
Ferrule length 8 mm
Recommended flat-
blade screwdriver
XW4Z-00B (Omron)
SZF 0.4 × 2.5 (Phoenix Contact)
210-719 (Wago)
SDI 0.4 × 2.5 × 75 (Weidmuller)
Current capacity 10 A (per pole)
Number of insertions 50 times
Case color N1.5
Case material PC, UL 94 V-0
Weight Approx. 100 g
Mounting Mounts to DIN Track, or screw mounting
Dimensions 17.5 × 90 × 90 mm (W×H×D)
Allowable operating
voltage range 85% to 110% of rated power supply voltage
Allowable operating
frequency range 50/60 Hz ±5 Hz
Input frequency range 40 to 500 Hz
Overload capacity Continuous input at 115% of maximum input,
10 s at 125% (up to 600 VAC).
Repeat
accuracy
Operating
value
±0.5% full scale (at 25°C and 65% humidity, rated
power supply voltage)
Operating
time
±50 ms (at 25°C and 65% humidity, rated power
supply voltage)
Applicable
standards
Conforming
standards
EN 60947-5-1
Installation environment (pollution level 2,
Overvoltage category III)
EMC EN 60947-5-1
Safety
standards
UL 60947-5-1 (Listing), Korean Radio Waves Act
(Act 10564), CCC (GB14048.5)
Insulation resistance
20 M:min.
Between external terminals and case
Between power supply terminals and input
terminals
Between power supply terminals and output
terminals
Between input terminals and output terminals
Dielectric strength
2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input
terminals
Between power supply terminals and output
terminals
Between input terminals and output terminals
Impulse withstand
voltage
6 kV (between live terminals and exposed,
non-charged metal parts)
Noise immunity
Square-wave noise of 1-Ps/100-ns pulse width
with 1-ns rise time
100 to 240 VAC: 1,500 V power supply terminal
common/normal mode
24 VAC: 1,500 V power supply terminal common/
normal mode
24 VDC: 480 V power supply terminal common
Vibration resistance
Frequency: 10 to 55 Hz, 0.35-mm single
amplitude
10 sweeps of 5 min each in X,Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along 3
axes
Degree of protection Terminals: IP20

K8DT-VS
4
Connections
Terminal Diagram
Note: 1. Do not connect anything to terminals that are shaded in gray.
2. There is no polarity for the DC power supply input.
3. For the voltage input, you can input only from the C terminal and one other terminal.
4. Refer to Setting Ranges and Wiring Connections for information on the V1, V2, and V3 voltage input terminals.
Wiring Example
Relay Output
Transistor Output
Note: Use copper wires with a rating of 75°C or an equivalent rating.
(1) Voltage Input
VS2
(3) Power Supply Voltage
A: 100 to 240 VAC D: 24 VAC/DC
(No polarity)
10Vmax.
30Vmax.
150Vmax.
VS3
200Vmax.
300Vmax.
600Vmax.
A1
V2
V1
14
A2
V3
11
12
C
K8DT-VS2 C A
(1) (2)(3)
V2
V1
V3
C
V2
V1
V3
C
A1 A2 A1 A2
DIP SW
Inside
Inside
(2) Output
C: Relay Output T: Transistor Output
14 11
12
14 11
DIP SW
Single-phase
power supply Load
Power
supply voltage A1
A2
Power
supply
AC/DC
A1
V2
V1
14
A2
V3
11
12
C
PLC
Single-phase
power supply Load
Power
supply voltage A1
A2
DIP SW
A1
V2
V1
14
A2
V3
11
C
Power
supply
AC/DC

K8DT-VS
5
Timing Charts
Overvoltage Operation Diagram
(Output Drive Method: Normally Closed)
DIP switch setting: SW3 ON, SW4 OFF.
Undervoltage Operation Diagram
(Output Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 ON.
Nomenclature
Front
Note: Use solid wires, stranded wires, or ferrules to connect to the
terminals.
To maintain the withstand voltage after connecting the
terminals, insert 8 mm of exposed conductor into the terminal.
Indicators
Setting Knobs
Note: The power ONlock prevents unnecessary alarms from being
generated during the instable period when the power is first
turned on. There is no contact output during timer operation.
Delay time: 250 ms (reference value)
Hysteresis
(5%to 50%of operating value)
Lit
Flashing
t1 t1: Power ONlock (1 or 5 s)
tt: Operating time (0.1 to 30 s)
Input
Power supply
voltage
Contacts 11-14 or
transistor output
Contacts 11-12
Set value
Alarm indicator
Note: The power ONlock prevents unnecessary alarms from being
generated during the instable period when the power is first
turned on. There is no relay output during timer operation.
Power supply
voltage
Contacts 11-14 or
transistor output
Contacts 11-12
Set value
Alarm indicator
Input
Delay time: 250 ms (reference value)
Hysteresis
(5%to 50%of operating value)
Lit
Flashing
t1 t1: Power ONlock (1 or 5 s)
tt: Operating time (0.1 to 30 s)
Voltage knob(SV)
Hysteresis knob(HYS)
Operating time knob(T)
Power indicator
Output status indicator
Alarm indicator
Terminal block
(See Note.)
Terminal block
(See Note.)
8mm 8mm
Solid Wire
8mm
Stranded Wires Ferrules
Item Meaning
Power indicator
(PWR: Green) Lit when power is being supplied.
Output status indicator
(OUT: Yellow) Lights for output
Alarm indicator
(ALM: Red)
Lit when there is an overvoltage or
undervoltage.
The indicator flashes to indicate the error
status after the input has exceeded the set
value while the operating time is being
clocked.
Item Usage
Voltage knob (SV) Used to set the voltage to 10% to 100% of
maximum setting range.
Hysteresis knob (HYS) Used to set the rest value to 5% to 50% of
the operating value.
Operating time knob (T) Used to set the operating time to 0.1 to 30 s.

K8DT-VS
6
Operation Methods
Setting Ranges and Wiring Connections
Connections
Input
Connect the input between terminals V1-COM, V2-COM, or V3-COM, depending on the input voltage.
Malfunctions may occur if the input is connected to unused terminals and the Unit will not operate
correctly.
Power Supply
Connect the power supply to terminals A1 and A2.
Outputs
For a relay output, the SPDT contacts are output on terminals 11, 12, and 14. For a transistor output,
the output is on terminals 11 and 14.
The internal circuit of the transistor output is NPN, but application is possible for either a sinking or
sourcing output.
DIP Switch Settings
The power ON lock time, reset method, drive output method, and operating mode are set using the DIP switch located on the front of the Unit.
Note: Open the DIP switch cover to set the DIP switch.
Keep the DIP switch cover closed while the power supply to the Relay is ON.
Model Setting range Wiring connection
K8DT-VS2
1 to 10 V AC/DC V1-COM
3 to 30 V AC/DC V2-COM
15 to 150 V AC/DC V3-COM
K8DT-VS3
20 to 200 V AC/DC V1-COM
30 to 300 V AC/DC V2-COM
60 to 600 V AC/DC V3-COM
Contact output
Voltage input
Single-phase power
C (COM)
V1
V2
V3
11
14
12
Load
A1
A2
Power supply
voltage
or
11
14
Transistor output
load
K8DT 11
Sinking
In the case of sinkingoutput applications
14
load
K8DT 11
In the case of sourcingoutput applications
14
Sourcing
O N
1 2 3 4
SW3DIP switch pins
SW2
SW1
SW4
DIP switch pins
Note: All pins are set to OFF at the factory.
Pin
ON ❍↑
OFF ●↓
Power ON
lock time
5 s ❍--- --- ---
1 s ●--- --- ---
Resetting
method
Automatic reset --- ❍--- ---
Manual reset --- ●--- ---
Relay drive
method
Normally closed --- --- ❍---
Normally open --- --- ●---
Operating
mode
Undervoltage --- --- --- ❍
Overvoltage --- --- --- ●
1
ON
OFF
2
3
4

K8DT-VS
7
Setting Method
Setting Voltage
The voltage knob (SV) is used to set the voltage.
The voltage can be set to 10% to 100% of the maximum setting range.
Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the
same level.)
Use this as a guide to set the voltage.
The maximum setting range will differ depending on the model and the input terminal.
Example: K8DT-VS3 Using Input Terminal V3-COM
The maximum setting range will be 600 VAC/VDC and the setting range will be 60 to 600 V.
Hysteresis
Hysteresis is set using the hysteresis knob (HYS)
The setting range is 5 to 50% of the operating value.
Example: Maximum Setting of 600 VAC/VDC, Voltage Set Value (SV) of 50%, and Overvoltage Operation
Operation will be at 300 V and resetting at 270 V when the hysteresis (HYS) is set to 10%.
Operating Time
The operating time is set using the operating time knob (T).
The operating time can be set to between 0.1 and 30 s.
If the input voltage exceeds (or drops lower than) the voltage set value, the alarm indicator will start flashing for the set period and then stay lit.
Dimensions (Unit: mm)
Optional Parts for DIN Track Mounting
17.5
90
86
90
5
100
Single-phase Voltage Relays
K8AK-VS2
K8AK-VS3
52.7
3.5
1.8
17.5 5.85
Options (Order Separately)
Front Cover
Y92A-D1A
DIN Tracks
PFP-100N
PFP-50N
*Dimensions in parentheses are for the PFP-50N.
4.5
15 25 25
10 10
1000(500)*
25 25 15(5)*
35
±0.3
7.3
±0.15
27
±0.15
1

K8DT-VS
8
Checking Operation
Overvoltages
Gradually increase the input from 80% of the set value.
The input will equal the operating value when the input
exceeds the set value and the alarm indicator starts flashing.
Operation can be checked by the contact outputs that will
start after the operating time has passed.
Undervoltage
Gradually decrease the input from 120% of the set value and
check the operation using the same method as for
overvoltage.
Example: Overvoltage Operating Mode and an Operating Time of 5 s
Note: K8DT-VS@output relays are normally operative.
How to Measure the Operating Time
Overvoltage
Change the input suddenly from 0% to 120% of the set value
and measure the time until the Unit operates.
Undervoltage
Change the input suddenly from 120% to 0% of the set value
and measure the time until the Unit operates.
Questions and Answers
Q
Current input
Set value
Alarm indicator
Flashing
5 s
Lit
Contact output or
transistor output
V
200 VAC
A1
Input terminals
Power supply
A2
± C 200 V
Cycle counter
Variable
autotransformer
0 to 300 V
Connection Diagram
Q

K8DT-VS
9
Safety Precautions
Be sure to read the precautions for all models in the website at the following URL: http://www.ia.omron.com/.
Warning Indications
Meaning of Product Safety Symbols
!WARNING
Electrical shock may occasionally cause serious injury. Confirm
that the input voltage is OFF before starting any wiring work and
wire all connections correctly.
!CAUTION
Doing so may occasionally result in minor injury due
to electric shock. Do not touch the Relay while the
power supply is ON, except for the adjustment knob.
There is a risk of minor electrical shock, fire, or device
failure. Do not allow any pieces of metal, conductors, or
cutting chips that occur during the installation process to
enter the product.
Explosions may cause minor injuries. Do not use the
product in locations with inflammable or explosive
gases.
There is a risk of minor electrical shock, fire, or device
failure. Do not disassemble, modify, repair, or touch
the inside of the product.
Use of the product beyond its life may result in
contact welding or burning. Make sure to consider the
actual operating conditions and use the product
within its rated load and electrical life count. The life
of the output relay varies significantly with the switching
capacity and switching conditions.
If the Relay is used with incorrect wiring, fire may
occasionally occur, possibly resulting in physical
damage. Check the wiring for mistakes before you
turn ON the power supply.
If the Relay fails, monitoring and alarm outputs may
fail to operate. This may result in physical damage to
the facilities, equipment, or other devices that are
connected to it. To reduce this risk, inspect the Relay
regularly. To maintain safety in the event of
malfunction of the Relay, take appropriate safety
measures, such as installing a monitoring device on a
separate line.
If the wire insertion length is insufficient, fire may
occasionally occur, possibly resulting in physical
damage. Insert the wires all the way to the back.
The terminal block may be damaged if you insert a
flat-blade screwdriver in the release hole with
excessive force. Insert the flat-blade screwdriver into
the release holes with a force of 15 N or less.
WARNING
Indicates a potentially hazardous
situation which, if not avoided, will result
in minor or moderate injury, or may result
in serious injury or death. Additionally,
there may be significant property
damage.
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
effects on product performance.
Used to warn of the risk of electric shock under
specific conditions.
Used for general prohibitions for which there is
no specific symbol.
Used to indicate prohibition when there is a risk
of minor injury from electrical shock or other
source if the product is disassembled.
Used for general mandatory action precautions
for which there is no specified symbol.

K8DT-VS
10
1. Do not use or store the product in the following locations.
•Locations subject to water or oil
•Outdoor locations or under direct sunlight
•Locations subject to dust or corrosive gases (sulfurizing gases,
ammonia gases, etc.)
•Locations subject to rapid temperature changes
•Locations prone to icing and dew condensation
•Locations subject to vibration and large shocks
•Locations subject to wind and rain
•Locations subject to static electricity or noise
•Locations subject to insects or small animals
2. Use and store the product in a location where the ambient
temperature and humidity are within the specified ranges. If
applicable, provide forced cooling.
3. Check terminal polarity when wiring and wire all connections
correctly. The power supply terminals do not have polarity.
4. Do not wire the input and output terminals incorrectly.
5. Make sure the power supply voltage and loads are within the
specifications and ratings for the product.
6. Make sure the ferrule terminals for wiring are of the specified size.
7. The stripping length is 8 mm. Insert the wires all the way to the
back.
8. Do not connect anything to terminals that are not being used.
9. Use a power supply that will reach the rated voltage within 1
second after the power is turned ON.
10.Keep wiring separate from high voltages and power lines that draw
large currents. Do not place product wiring in parallel with or in the
same path as high-voltage or high-current lines.
11.Do not install the product near equipment that generates high
frequencies or surges.
12.The product may cause incoming radio wave interference. Do not
use the product near radio wave receivers.
13.Install an external switch or circuit breaker and label it clearly so
that the operator can quickly turn OFF the power supply.
14.Make sure the indicators operate correctly. Depending on the
application environment, the indicators may deteriorate
prematurely and become difficult to see.
15.Do not use the product if it is accidentally dropped. The internal
components may be damaged.
16.Be sure you understand the contents of this catalog and handle
the product according to the instructions provided.
17.Do not install the product in any way that would place a load on it.
18.When discarding the product, properly dispose of it as industrial
waste.
19.When using the product, remember that the power supply
terminals carry a high voltage.
20.The product must be handled only by trained electrician.
21.Prior to operation, check the wiring before you supply power to the
product.
22.Do not install the product immediately next to heat sources.
23.Perform periodic maintenance.
24.Do not wire anything to the release holes.
25.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.
26.Insert a flat-blade screwdriver into the release holes at an angle.
The terminal block may be damaged if the screwdriver is inserted
straight in.
27.Do not allow the flat-blade screwdriver to fall when you are holding
it in a release hole.
28.Do not bend a wire past its natural bending radius or pull in it with
excessive force. Doing so may break the wires.
29.Do not insert more than one wire into each terminal insertion hole.
30.To prevent wiring materials from smoking or igniting, confirm wire
ratings and use the wiring materials given in the following table.
31.Use only the specified wires for wiring.
32.When wiring the terminals, allow some leeway in the wire length.
33.Make sure that the power supply is turned OFF before you change
any DIP switch setting.
Observe the following operating methods to
prevent failure and malfunction.
1. Use the power supply voltage, input power, and other power
supplies and converters with suitable capacities and rated outputs.
2. Do not use the Relay in circuits with waveform distortion. Error will
be large due to waveform distortion.
3. Error will be large if the product is used for thyristor or inverter
control.
4. When cleaning the product, do not use thinners or solvents. Use
commercial alcohol.
5. If you use stranded wires, make sure that there are no loose wire
strands.
6. If you wire crossovers and connect terminal blocks in parallel, a
large current will flow. Make sure that the current does not exceed
10 A.
7. The terminal block may be damaged if the recommended tool is
not used. Use the recommended flat-blade screwdriver to operate
the release holes.
Correct Mounting Direction, Mounting, and
Removing
Mounting to DIN Track
To mount the Relay to a DIN Track, hook the Relay onto the DIN
Track and press the Relay in the direction of the arrow until you hear
it lock into place.
Removing from the DIN Track
To remove the Relay, insert a screwdriver into the hook on the top or
bottom and pull out the hook to release the Relay.
• Leave at least 30 mm of space between the product and other
devices to allow easy installation and removal.
Precautions for Safe Use
Recommended wire Stripping length
(Ferrules not used)
0.25 to 1.5mm2/Equivalent to AWG24 to 16 8 mm
Precautions for Correct Use
(1) (2)
PFP-100N (100 cm)
PFP-50N (50 cm)
Applicable DIN Tracks
30 mm min.

K8DT-VS
11
Screw Mounting
1. Pull out the two hooks on the back of the Relay to the outside until
you hear them click in place.
2. Insert M3 screws into the hook holes and secure the Relay.
Adjusting the Setting Knobs
• Use a flat-blade screwdriver to adjust the setting knobs. The knobs
have a stopper that prevents them from turning beyond the full right
or left position. Do not force a knob beyond these points.
• To reduce the error in the setting knob, always turn the setting knob
from the minimum setting toward the maximum setting.
Connecting Wires to the Push-In Plus Terminal Block
Part Names of the Terminal Block
Connecting Wires with Ferrules and Solid Wires
Insert the solid wire or ferrule straight into the terminal block until the
end strikes the terminal block.
If a wire is difficult to connect because it is too thin, use a flat-blade
screwdriver in the same way as when connecting stranded wire.
Connecting Stranded Wires
Use the following procedure to connect the wires to the terminal block.
1. Hold a flat-blade screwdriver at an angle and insert it into the
release hole. The angle should be between 10° and 15°.
If the flat-blade screwdriver is inserted correctly, you will feel the
spring in the release hole respond.
2. With the flat-blade screwdriver still inserted into the release hole,
insert the wire into the terminal hole until it strikes the terminal block.
3. Remove the flat-blade screwdriver from the release hole.
Checking Connections
• After the insertion, pull gently on the wire to make sure that it will
not come off and the wire is securely fastened to the terminal block.
• If you use a ferrule with a conductor length of 10 mm, part of the
conductor may be visible after the ferrule is inserted into the
terminal block, but the product insulation distance will still be
satisfied.
Removing Wires from the Push-In Plus Terminal Block
Use the following procedure to remove wires from the terminal block.
The same method is used to remove stranded wires, solid wires, and
ferrules.
1. Hold a flat-blade screwdriver at an angle and insert it into the
release hole.
2. With the flat-blade screwdriver still inserted into the release hole,
remove the wire from the terminal insertion hole.
3. Remove the flat-blade screwdriver from the release hole.
(1)
(1)
(2)
(2)
Two M3 screw holes or
two 3-dia. holes
108
Mounting Hole Dimensions
Note: 1. Pull out the hooks to mount
the Relay with screws.
2. Recommended tightening
torque: 0.5 to 0.6 N·m.
Setting knob
Release hole
Terminal
(Insertion) hole
Release hole
Terminal
(Insertion) hole
<Upper side> <Lower side>
Ferrule
Release hole
Terminal
(Insertion) hole
Ferrule
Release hole
Terminal
(Insertion) hole
<Upper side> <Lower side>
Wire
Flat-blade screwdriver
(1)
(3)
(2)
Wire
Flat-blade screwdriver
(1)
(2)
(3)
10 to 15°
10 to 15°
Flat-blade
screwdriver
Flat-blade
screwdriver
<Upper side> <Lower side>
Wire
Flat-blade screwdriver
(1)
(3)
(2)
Wire
Flat-blade screwdriver
(1)
(2)
(3)
10 to 15°
10 to 15°
Flat-blade
screwdriver
Flat-blade
screwdriver
<Upper side> <Lower side>

K8DT-VS
12
Recommended Ferrules and Tools
Recommended ferrules
Note: 1. Make sure that the outer diameter of the wire coating is
smaller than the inner diameter of the insulation sleeve of
the recommended ferrule.
2. Make sure that the ferrule processing dimensions conform
to the following figures.
Recommended Flat-blade Screwdriver
Use a flat-blade screwdriver to connect and remove wires.
Use the flat-blade screwdriver.
The following table shows manufacturers and models as of 2015/Dec.
*OMRON's exclusive purchase model XW4Z-00B is available to
order as SZF 0-0.4×2.5 (manufactured by Phoenix Contact).
• Refer to the contents of this datasheet for cable selection and other
conditions for compliance with EMC standards.
Precaution on EN Standard Compliance
The K8DT complies with EN 60947-5-1 when it is built into a panel,
but observe the following handling methods to ensure compliance
with the requirements of this standard.
Wiring
Overvoltage category III
Pollution degree 2
• Open-frame Device
• If basic, double, or reinforced insulation is required, use the basic,
double, or reinforced insulation defined in IEC 60664 that is
suitable for the maximum applied voltage for the clearance, solid
insulation, and other factors.
• There is basic insulation between the power supply terminals and
input terminals.
• There is basic insulation between the power supply terminals and
output terminals.
• There is basic insulation between the input terminals and output
terminals.
• Operating section must have reinforced or double insulation.
• The sides of the case are not isolated.
• Connect the output contacts (contacts with different polarity) so
that they reach the same potential.
Applicable
wire
Ferrule
Conductor
Length
(mm)
Stripping
length
(mm)
(Ferrules
used)
Recommended ferrules
(mm
2
)(AWG)
PhoenixContact
product
Weidmuller
product
Wago product
0.25 24
8 10 AI 0.25-8 H0.25/12
FE-0.25-8N-YE
10 12 AI 0.25-10 --- ---
0.34 22
8 10 AI 0.34-8 H0.34/12
FE-0.34-8N-TQ
10 12 AI 0.34-10 --- ---
0.5 20
8 10 AI 0.5-8 H0.5/14
FE-0.5-8N-WH
10 12 AI 0.5-10 H0.5/16 FE-0.5-10N-WH
0.75 18
8 10 AI 0.75-8 H0.75/14
FE-0.75-8N-GY
10 12 AI 0.75-10 H0.75/16 FE-0.75-10N-GY
1/1.25 18/17
8 10 AI 1-8 H1.0/14 FE-1.0-8N-RD
10 12 AI 1-10 H1.0/16
FE-1.0-10N-RD
1.25/1.5 17/16
8 10 AI 1.5-8 H1.5/14 FE-1.5-8N-BK
10 12 AI 1.5-10 H1.5/16
FE-1.5-10N-BK
Recommended crimp tool
CRIMPFOX6
CRIMPFOX6T-F
CRIMPFOX10S
PZ6 roto Variocrimp4
Model Manufacturer
ESD0.40×2.5 Wera
SZS 0.4×2.5
SZF 0-0.4×2.5 *Phoenix Contact
0.4×2.5×75 302 Wiha
AEF.2.5×75 Facom
210-719 Wago
SDI 0.4×2.5×75 Weidmuller
8 to 10 mm
1.9 mm max. 2.6 mm max.
Side
0.4 mm
2.5 mm dia.
2.5 mm
Front
EN/IEC Standard Compliance
Not isolated
Reinforced insulation
(Double insulation)

Terms and Conditions Agreement
Read and understand this catalog.
Please read and understand this catalog before purchasing the products. Please consult your OMRONrepresentative if youhave
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. OMRONMAKES 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.
OMRONCOMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTIONOR COMMERCIAL LOSS INANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED INCONTRACT, 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 ANAPPLICATIONINVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR INLARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEENDESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRONPRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHINTHE
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.

Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No. N203-E1-01 0316 (0316)
© OMRONCorporation 2016 All Rights Reserved.
OMRON Corporation Industrial Automation Company
OMRON ELECTRONICS LLC
2895 Greenspoint Parkway, Suite 200
Hoffman Estates, IL 60169 U.S.A.
Tel: [phone]/Fax: [phone]
Regional Headquarters
OMRON EUROPE B.V.
Wegalaan 67-69, 2132 JD Hoofddorp
The Netherlands
Tel: [phone]/Fax: [phone]
Contact: www.ia.omron.com
Kyoto, JAPAN
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08(Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: [phone]/Fax: [phone]
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong NewArea, Shanghai, 200120, China
Tel: [phone]/Fax: [phone]
CSM_1_5_0317