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■ Operation and Setting Methods
Setting Ranges and Wiring Connections
Model
Measuring current
K8AB-VW1
6 to 60 mV AC/DC
10 to 100 mV AC/DC
30 to 300 mV AC/DC
K8AB-VW2
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
K8AB-VW3
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Connections
1. 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.
2. Power Supply
Connect the power supply to terminals A1 and A2.
Note: Models with DC power supply have a non-isolated power supply. The input and power supply
terminals are connected internally so the K8AB-VW will not operate normally if an unwanted
current path is created.
If an unwanted current path exists, use a model with an AC power supply or isolate with an
external power supply.
3. Outputs
AL1 (SPDT relay) is output to terminals 11, 12, and 14.
AL2 (SPDT relay) is output to terminals 21, 22, and 24.
Note: Use the recommended ferrules if using twisted wires.
DIP Switch Settings
The power ON lock time, resetting method and operating mode are set using the DIP switch located on the bottom of the Unit.
ON
OFF
SW1
SW2
DIP switch
SW3
SW4
Cat. No. N144-E1-02
Wiring connection
V1-COM
V2-COM
V3-COM
V1-COM
V2-COM
V3-COM
V1-COM
V2-COM
V3-COM
DIP Switch Functions
SWITCH
Power ON
5 s
lock time
1 s
Resetting
Automatic reset
method
Manual reset
Operating
AL1
mode
Overvoltage
Undervoltage
Undervoltage Undervoltage
Overvoltage
Overvoltage
Overvoltage
Undervoltage
Note: All pins are set to OFF at the factory.
Single-phase Voltage Relay
Single-phase power
Load
ON ● ↑
3
4
ON
OFF ❍ ↓
OFF
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AL2
●
●
●
❍
❍
●
❍
❍
K8AB-VW
A1
Power supply
voltage
A2
V1
Voltage input
COM
V2
V3
14
11
Signal output
AL1 relay
12
signal
output
24
21
Signal output
AL2 relay
22
signal
output
2
1
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7
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