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Operation Methods
Setting Ranges and Wiring Connections
Model
Setting range
1 to 10 V AC/DC
K8DT-VW2
3 to 30 V AC/DC
15 to 150 V AC/DC
20 to 200 V AC/DC
K8DT-VW3
30 to 300 V AC/DC
60 to 600 V AC/DC
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.
In the case of sinking output applications
14
load
Sinking
11
K8DT
DIP Switch Settings
The power ON lock time, resetting 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.
SW4
SW3
DIP Switch Functions
SW2
SW1
Wiring connection
V1-COM
V2-COM
V3-COM
V1-COM
V2-COM
V3-COM
In the case of sourcing output applications
14
Sourcing
load
11
K8DT
DIP Switch Functions
ON ❍ ↑
Pin
OFF ● ↓
5 s
Power ON lock
time
1 s
Operating mode
Resetting
method
Manual reset
AL1
AL2
Over-
Under-
voltage
voltage
Under-
Under-
Operating mode
voltage
voltage
Over-
Over-
voltage
voltage
Over-
Under-
voltage
voltage
Note: All pins are set to OFF at the factory.
Single-phase power
Power supply
Voltage input
Contact output
Signal output
Load
1
2
ON
OFF
❍
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K8DT-VW
A1
voltage
A2
V1
V2
C(COM)
V3
14
11
12
or
11
14
3
4
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❍
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❍
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5
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