H3DT-L2 AC/DC24-240 - OMRON

New Product

Three-phase Voltage and Phase-sequence Phase-loss Relay

K8DT-PM

Protect motors and other equipment from unstable

voltages in the power supply system.

Protect motors and other equipment by detecting

overvoltages, undervoltages, phase sequence, and

phase loss for three-phase power supplies.

• Phase loss detection while the motor is operating.

• Global power supply support. (Changed with a switch.)

• Greater resistance to inverter noise.

• 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.

• Certified for maritime standards (LR).

• Models added with transistor outputs for superior contact reliability.

Ordering Information

Three-phase Voltage and Phase-sequence Phase-loss Relay

Note: The input range is set with a DIP switch.

*The power supply voltage is the same as the rated input voltage.

Options (Order Separately)

Front Cover

Refer to Safety Precautions on page 9.

Refer to pages 7 to 8 for commonly asked questions.

For the most recent information on models

that have been certified for safety

standards, refer to your OMRON website.

Rated input voltage *Output Model

3-phase 3-wire 200, 220, 230, 240 VAC Relay: SPDT contact output K8DT-PM1CN

Transistor K8DT-PM1TN

3-phase 3-wire 380, 400, 415, 480 VAC Relay: SPDT contact output K8DT-PM2CN

Transistor K8DT-PM2TN

Appearance Model

Y92A-D1A

K8DT-PM

Ratings and Specifications

Ratings Specifications

Rated input voltage

K8DT-PM1@N: Three-phase, three-wire Mode:

200, 220, 230, or 240 VAC

K8DT-PM2@N: Three-phase, three-wire Mode:

380, 400, 415, or 480 VAC

Input load K8DT-PM1: Approx. 1.7 VA

K8DT-PM2: Approx. 2.7 VA

Rated insulation

voltage 528 VAC

Operating value setting

range

Overvoltage

30% to 30% of rated input voltage

Undervoltage

30% to 30% of rated input voltage

Note: The rated input voltage can be switched

by using the DIP switches.

Operating value Operates at 100% of set value.

Reset value 5% of operating value (fixed)

Reset method Automatic reset

Operating

time

setting

range

Overvoltage/

Undervoltage

0.1 to 30 s

Phase

sequence 0.1 s0.05 s

Phase loss 0.1 s max.

Power ON lock time 1 s5 s (switched by using the DIP switch)

Indicators Power (PWR): Green, Output (OUT): Yellow,

OVER: Red, UNDR: Red

Output form Relay Output: SPDT contact

Transistor Output: 1

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DH)

Input frequency 50/60 Hz

Overload capacity Continuous 528 V

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), LR (Category

ENV1.2)

Insulation resistance

20 M min.

Between external terminals and case

Between input terminals and output terminals

Dielectric strength

2,000 VAC for one minute

Between external terminals and case

Between input terminals and output terminals

Noise immunity

1,500 V power supply terminal common/normal

mode

Square-wave noise of 1 s/100 ns pulse width

with 1-ns rise time

Impulse withstand

voltage

6 kV (between live terminals and exposed, non-

charged metal parts)

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-PM

Connections

Terminal Diagram

Note: Do not connect anything to terminals that are shaded in gray.

Wiring Example

Relay Output Transistor Output

Note: Use copper wires with a rating of 75°C or an equivalent rating.

Timing Charts

Overvoltage/Undervoltage and Phase Sequence/Phase Loss Operation Diagram

Note: 1. The K8DT-PM@ output contacts are normally operative.

The power ON lock prevents unnecessary alarms from being

generated during the unstable period when the power is first

turned ON. There is no contact output during timer operation.

3. Phase loss is detected by a drop in the L1, L2, or L3 voltage.

A phase loss is detected when any of the phase-to-phase

voltages goes below 60% of the rated input.

4. L1 and L2 are also used for the power supply. If the voltage

becomes very low, the Relay will not operate.

5. Phase loss (on power supply side and load side) is not

detected in the motor load during operation.

Operation Table

*1. L1 and L2 are also used for the power supply. If the voltage

becomes very low, the indicator will turn OFF.

*2. The indicator will flash once per second after an incorrect phase

is detected and once per 0.5 second during the detection time.

K8DT-PM1 C N

DIP SW

Inside

(2) Output

C: Relay Output T: Transistor Output

14 11

(1) Input Voltages

(1) (2)

3-phase,

3 W

power

supply

Phase-to-phase voltage:

200 to 240 VAC

PM1 PM2

3-phase,

3 W

power

supply

Phase-to-phase voltage:

380 to 480 VAC

3-phase

voltage Motor

Power

supply

AC/DC

DIP SW

PLC

Power

supply

AC/DC

3-phase

voltage Motor

DIP SW

Flashing Flashing

Phase sequence Operation

Phase Loss Operation

t: Operating time (0.1 to 30 s)

t1: Power ON lock (1 s)

OVER_LED

UNDR_LED

Undervoltage

set value

Power supply

voltage

Contacts 11-14 or

transistor output

L2InputL3

Hysteresis:

Fixed at 5%

Hysteresis: Fixed at 5%

Lit

Flashing

Lit

Flashing

OVER_LED Flashing

Flashing

Input L2

UNDR_LED

Contacts 11-14 or

transistor output

Flashing

Delay time: 250 ms

(reference value)

Delay time: 250 ms

(reference value)

Item Indicators Contact

operation

OUT_LED OVER_LED UNDR_LED

Normal

ON OFF OFF ON

Overvoltage

OFF ON OFF OFF

Undervoltage

OFF OFF ON OFF

Phase Loss OFF Flashing *1 Flashing *1OFF

Phase sequence

OFF OFF Flashing *2OFF

K8DT-PM

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

*This indicator uses the input across L1 and L2 as the internal power

supply. It will not light unless there is an input across L1 and L2.

Setting Knobs

Operation Methods

Connections

Input

Wire the input to the L1, L2, and L3 terminals (3-phase, 3-wire).

Make sure the phase sequence is wired correctly. The Unit will not operate normally if the phase

sequence is incorrect.

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 is of the transistor output NPN, but application is possible for either a sinking or

sourcing output.

Terminal block

(See Note.)

Terminal block

(See Note.)

Power indicator

Output status indicator

Overvoltage knob

(OVER)

Undervoltage knob

(UNDR)

Operating time knob (T)

Alarm indicator

8 mm 8 mm

Solid Wire

8 mm

Stranded Wires Ferrules

Item Meaning

Power indicator

(PWR: Green) Lit when power is being supplied.*

Output status indicator

(OUT: Yellow) Lights for output (lit for normal operation)

Alarm

indicator

OVER: Red

• Lights for overvoltage error.

When the input exceeds the overvoltage

value, the indicator flashes for the operating

time to indicate the error status.

• Flashes for phase loss.

UNDR: Red

• Lights for undervoltage error.

When the input exceeds the undervoltage

value, the indicator flashes for the operating

time to indicate the error status.

• Flashes for phase loss.

• Flashes for reversed phase error.

Item Description

Overvoltage knob (OVER) Used to set from -30% to 30% of the rated

input.

Undervoltage knob

(UNDR)

Used to set from -30% to 30% of the rated

input.

Operating time knob (T) Used to set the operating time to 0.1 to 30 s.

Voltage inputL1

L3L2L1

Load

Contact output11

Transistor output

load

K8DT 11

Sinking

In the case of sinking output applications

load

K8DT 11

In the case of sourcing output applications

Sourcing

K8DT-PM

DIP Switch Settings

The Power ON lock time, rated voltage are set using the DIP switch located on the front of the Unit.

K8DT-PM@ does not use SW2.

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.

Setting Methods

Overvoltage

The overvoltage knob (OVER) is used to set the overvoltage threshold.

The overvoltage can be set to between −30% and 30% of the rated input voltage.

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 rated input depends on the model and the DIP switch setting.

Example: K8DT-PM1 with DIP Switch Set to 200 V

The rated input is 200 VAC and the setting range is 140 to 250 V.

Undervoltage

Undervoltage is set using the undervoltage knob (UNDR).

The undervoltage can be set to between −30% and 30% of the rated input.

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 rated input depends on the model and the rotary switch setting.

Example: K8DT-PM1 with Rotary Switch Set to 200 V

The rated input voltage is 200 VAC and the setting range is 140 to 250 V.

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 exceeds (or drops lower than) the voltage set value, the alarm indicator will start flashing for the set period and then stay lit.

SW3 DIP switch pins

SW2

SW1

SW4

DIP switch pins

K8DT-PM1

Note: All pins are set to OFF at the factory.

K8DT-PM2

Note: All pins are set to OFF at the factory.

ON ❍ ↑

OFF ● ↓

Power ON

lock time

5 s ❍

Not used.

--- ---

1 s ●--- ---

Rated voltage

240 V --- ❍❍

230 V --- ●❍

220 V --- ❍●

200 V --- ●●

ON ❍ ↑

OFF ● ↓

Power ON

lock time

5 s ❍

Not used.

--- ---

1 s ●--- ---

Rated voltage

480 V --- ❍❍

415 V --- ●❍

400 V --- ❍●

380 V --- ●●

OFF

K8DT-PM

Dimensions (Unit: mm)

Optional Parts for DIN Track Mounting

17.5

100

Three-phase Voltage and Phase-sequence Phase-loss Relays

K8DT-PM1

K8DT-PM2

Options (Order Separately)

Front Cover

Y92A-D1A

52.7

3.5

1.8

17.5 5.85

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) *

±0.3

7.3

±0.15

K8DT-PM

Checking Operation

Overvoltage

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 relay output 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 an

overvoltage.

How to Measure the Operating Time

Overvoltage

Change the input suddenly from 70% to 120% of the set value

and measure the time until the Unit operates.

Undervoltage

Change the input suddenly from 120% to 70% of the set value

and measure the time until the Unit operates.

Operating Time

Adjust the slide resistor so that the voltage applied to the

K8DT terminals is 120% of the set value for overvoltage

detection or 80% of the set value for undervoltage detection

when the auxiliary relay in connection diagram 2 operates.

Close the switch and use a cycle counter to measure the

operating time.

Checking the Phase Sequence and Phase Loss

Operation

Phase Sequence

Switch the wiring, as shown by the dotted lines in connection

diagram 1, to reverse the phase sequence and check that the

K8DT operates.

Phase loss

Create a phase loss for any input phase and check that the

K8DT operates.

Questions and Answers

Input voltage

Operating set value

Alarm indicator

Flashing

5 s

Lit

Contact output or

transistor output

3-phase,

200 VAC

0 to 150 V

3-phase variable autotransformer

Example: Monitoring Mode for Rated Voltage of 200 V and an Operating

Time Setting of 5 s

Connection Diagram 1

3-phase, 200 VAC

X/a

X/b

R1: Sliding resistor, 200 Ω, 200 W

R2: 100 Ω, 400 W

± C 200 V

Cycle counter

Connection Diagram 2

K8DT-PM

Load-side Phase Loss

In principle, phase loss cannot be detected on the load side

because the K8DT-PM measures three-phase voltage to

determine phase loss.

Motor Load Phase Loss during Operation

Motor load phase loss cannot be detected during operation. It

can be used to detect phase loss at startup.

Normally, three-phase motors will continue to rotate even if

one phase is open. The three-phase voltage will be induced

at the motor terminals. The diagram shows voltage induction

at the motor terminals when phase R has been lost with a

load applied to a three-phase motor. The horizontal axis

shows the motor load as a percentage of the rated load, and

the vertical axis shows voltage as a percentage of the rated

voltage. The lines in the graph show the voltage induced at

the motor terminals for each load phase loss occurs during

operation. As the graph shows, phase loss cannot be

detected because the motor terminal voltage does not drop

very much even if a phase is lost when the load on the motor

is light. To detect motor load phase loss during operation, use

the undervoltage detection function to detect the motor

terminal voltages at phase loss. Set the operating time

carefully because it will affect the time from when the phase

loss occurs until tripping when this function is used.

Is an overvoltage detected if only one of the three-phase

phase-to-phase voltages exceeds the overvoltage set

value?

The K8DT monitors all three phase voltages. Therefore, an

overvoltage is detected if only one of the phase-to-phase

voltages exceeds the set value. The same is true for

undervoltages.

Questions and Answers

100

0 1020304050607080 90 100 110

Motor load (as a percentage of rated load)

Note: This characteristic curve shows the approximate

values only.

VST

VTR

VRS

Voltage (as a percentage of rated voltage)

Characteristic Curve Diagram

Note: For phase loss of phase R. VST, VTR, and VRS

indicate the motor terminal voltage at phase

loss.

K8DT-PM

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-PM

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.

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.The product must be handled only by trained electrician.

20.Prior to operation, check the wiring before you supply power to the

product.

21.Do not install the product immediately next to heat sources.

22.Perform periodic maintenance.

23.Do not wire anything to the release holes.

24.When you insert a flat-blade screwdriver into a release hole, do not

tilt or twist the screwdriver. The terminal block may be damaged.

25.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.

26.Do not allow the flat-blade screwdriver to fall when you are holding

it in a release hole.

27.Do not bend a wire past its natural bending radius or pull in it with

excessive force. Doing so may break the wires.

28.Do not insert more than one wire into each terminal insertion hole.

29.To prevent wiring materials from smoking or igniting, confirm wire

ratings and use the wiring materials given in the following table.

30.Use only the specified wires for wiring.

31.When wiring the terminals, allow some leeway in the wire length.

32.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. The distortion in the input waveform must be 30% max. If the input

waveform is distorted beyond this level, it may cause unnecessary

operation.

3. The product cannot be used for thyristor control or on the

secondary side of an inverter. To use this product on the primary

side of an inverter, install a noise filter on the primary side of the

inverter.

4. Phase loss is detected only when the power supply to the motor is

turned ON. Phase loss during motor operation is not detected.

5. Phase loss can be detected only from the input contacts to the

power supply side. Phase loss cannot be detected from the input

contacts to the load side.

6. When cleaning the product, do not use thinners or solvents. Use

commercial alcohol.

7. If you use stranded wires, make sure that there are no loose wire

strands.

8. 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.

9. 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 1.5 mm2/AWG 24 to 166 8 mm

Precautions for Correct Use

(2)

(1)

PFP-100N (100 cm)

PFP-50N (50 cm)

Applicable DIN Tracks

30 mm min.

K8DT-PM

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 touches 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.

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)

(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

Ferrule

Release hole

Terminal

(Insertion) hole

Ferrule

Release hole

Terminal

(Insertion) hole

Wire

Flat-blade screwdriver

(1)

(3)

(2)

Wire

Flat-blade screwdriver

(1)

(2)

(3)

10 to 15°

Flat-blade

screwdriver

Flat-blade

screwdriver

Wire

Flat-blade screwdriver

(1)

(3)

(2)

Wire

Flat-blade screwdriver

(1)

(2)

(3)

10 to 15°

Flat-blade

screwdriver

Flat-blade

screwdriver

K8DT-PM

Recommended Ferrules and Crimp 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 following 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 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

)(AWG) Phoenix Contact

product

Weidmuller

product

Wago

product

0.25 24

8 10 AI 0,25-8 H0.25/12 216-301

10 12 AI 0,25-10 --- ---

0.34 22

8 10 AI 0,34-8 H0.34/12 216-302

10 12 AI 0,34-10 --- ---

0.5 20

8 10 AI 0,5-8 H0.5/14 216-201

10 12 AI 0,5-10 H0.5/16 216-241

0.75 18

8 10 AI 0,75-8 H0.75/14 216-202

10 12 AI 0,75-10 H0.75/16 216-242

1/1.25 18/17

8 10 AI 1-8 H1.0/14 216-203

10 12 AI 1-10 H1.0/16 216-243

1.25/1.5

17/16

8 10 AI 1,5-8 H1.5/14 216-204

10 12 AI 1,5-10 H1.5/16 216-244

Recommended crimp tool

CRIMPFOX6

CRIMPFOX6T-F

CRIMPFOX10S

PZ6 roto

Variocrimp4

Model Manufacturer

ESD 0,40×2,5 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 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.

Authorized Distributor:

In the interest of product improvement,

specifications are subject to change without notice.

Cat. No. N207-E1-01 0316(0316)

OMRON Corporation Industrial Automation Company

OMRON ELECTRONICS LLC

2895 Greenspoint Parkway, Suite 200

Hoffman Estates, IL 60169 U.S.A.

Tel: (1) 847-843-7900/Fax: (1) 847-843-7787

Regional Headquarters

OMRON EUROPE B.V.

Wegalaan 67-69, 2132 JD Hoofddorp

The Netherlands

Tel: (31)2356-81-300/Fax: (31)2356-81-388

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: (65) 6835-3011/Fax: (65) 6835-2711

OMRON (CHINA) CO., LTD.

Room 2211, Bank of China Tower,

200 Yin Cheng Zhong Road,

PuDong New Area, Shanghai, 200120, China

Tel: (86) 21-5037-2222/Fax: (86) 21-5037-2200

CSM_1_6_0617