Single-Phase
Current
Relay
with ferrule terminated wires
• Models
transistor
outputs
superior
contact
reliability.
added
with
for
*The K8DT-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT).
Direct input is not possible.
Accessories (Order Separately)
●OMRON Current Transformer
Appearance
Input range
10 to 100 A AC,
20 to 200 A AC
Applicable
Relay
K8DT-AS3
Model
●Commercially Available Current
Transformers*
Appearance
K8AC-CT200L
CT current on
secondary side
0 to 1 A AC,
0 to 5 A AC
Applicable Relay
K8DT-AS2
* If you use a commercially available CT, do not exceed the overload
capacity of the K8DT-AS2.
0to
20
mA AC/DC
0
to 100
mA AC/DC
0
to 500
mA AC/DC
0
1 A AC/DC
to
0
15 A AC/DC
to
0
to 100
A AC
0
to 200
A AC
Stranded
wires or
ferrules
±0.5%
humidity,
rated
full
scale
(at
25°C
and
65%
power
DC or 50/60 Hz sine wave input)
supply
voltage,
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the
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connecting
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terminals,
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K8DT-AS
Precautions for Safe Use
30.To prevent wire materials from smoking or igniting, use the wiring
materials given in the following table.
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
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. Make sure 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 electricians.
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.When you insert a flat-blade screwdriver into a release hole, do not
tilt or twist the screwdriver. 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.
Without
Ferrules
With Ferrules
0.25 to 1.5mm2/Equivalent to AWG24 to 16
10 mm
8 mm
Note: Please use Ferrules with UL certification (R/C).
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.
Precautions for Correct Use
• Locations subject to static electricity or noise
• Locations subject to insects or small animals
• Locations subject to direct radiant heat from heating equipment
Stripping length
Recommended wire
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. 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.
(1)
(2)
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.
Applicable DIN Tracks
PFP-100N (100 cm)
PFP-50N (50 cm)
30 mm min.
• Leave at least 30 mm of space between the product and other
devices to allow easy installation and removal.
11
K8DT-AS
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.
Mounting Hole Dimensions
(1)
Two M3 screw holes or
two 3-dia. holes
(2)
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.
108
Flat-blade screwdriver
(2)
(1)
Note: 1. Pull out the hooks to mount
the Relay with screws.
2. Recommended tightening
torque: 0.5 to 0.6 N·m.
(2)
(3)
Wire
(1)
Adjusting the Setting Knobs
(1)
Wire
(2)
(3)
Flat-blade screwdriver
10 to 15°
• 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.
Flat-blade
screwdriver
Flat-blade
screwdriver
10 to 15°
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.
• To prevent short circuits, insert the stripped part of a stranded wire
or the conductor part of a ferrule until it is hidden inside
the terminal insertion hole. (See the following diagram.)
Setting knob
• To reduce the error in the setting knob, always turn the setting knob
from the minimum setting toward the maximum setting.
Wire
Ferrule
Connecting Wires to the Push-In Plus Terminal Block
Part Names of the Terminal Block
Ferrule
Terminal
(Insertion) hole
Release hole
Release hole
Terminal
(Insertion) hole
Connecting Wires with Ferrules
Insert the ferrule straight into the terminal block until the
end strikes the terminal block.
Terminal
(Insertion) hole
Ferrule
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 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.
Flat-blade screwdriver
(2)
Release hole
(3)
Wire
Release hole
Wire
Ferrule
Terminal
(Insertion) hole
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.
(1)
(3)
(1)
Wire
(2)
Flat-blade screwdriver
10 to 15°
Flat-blade
screwdriver
Flat-blade
screwdriver
10 to 15°
12
K8DT-AS
Recommended Ferrules and Tools
EN/IEC Standard Compliance
Recommended Ferrules
Wire
(mm2)
(AWG)
Recommended ferrules
Ferrule
length
(mm)
Manufactured Manufactured
Manufactured
by Phoenix
by
by Wago
Contact
Weidmuller
0.25
24
8 AI0.25-8
H0.25/12
FE-0.25-8N-YE
0.34
22
8 AI0.34-8
H0.34/12
FE-0.34-8N-TQ
0.5
20
8 AI0.5-8
H0.5/14
FE-0.5-8N-WH
0.75
18
8 AI0.75-8
H0.75/14
FE-0.75-8N-GY
1
18
8 AI1-8
H1.0/14
FE-1.0-8N-RD
1.5
16
8 AI1.5-8
H1.5/14
FE-1.5-8N-BK
PZ6 roto
Variocrimp4
CRIMPFOX6
CRIMPFOX6T-F
CRIMPFOX10S
Recommended crimp tool
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.
8 mm
2.1 mm max.
• 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.
2.7 mm max.
Recommended Flat-blade Screwdriver
Use a flat-blade screwdriver to connect and remove wires.
The following table shows manufacturers and models as of 2015/Dec.
Side
Front
2.5 mm dia.
0.4 mm
Reinforced insulation
(Double insulation)
Not isolated
2.5 mm
Model
XW4Z-00B
Manufacturer
Omron
ESD0.40 2.5
Wera
SZF 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
13
A9AC
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