Datasheet

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 NPN output is on terminals 11 and 14.
Do not use the transistor output for control applications. It is designed only to output a signal when an
error is detected.
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
O N
1 2 3 4
SW3
DIP 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