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K8AK-VW
Operation and Setting Methods
●Setting Ranges and Wiring Connections
Model
Setting range
1 to 10 V AC/DC
K8AK-VW2
3 to 30 V AC/DC
15 to 150 V AC/DC
20 to 200 V AC/DC
K8AK-VW3
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.
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.
OFF
ON
SW4
SW3
DIP switch pins
SW2
SW1
●Setting Method
1. Setting Voltage
The voltage knob (AL1 and AL2) is used to set the voltage.
The voltage can be set to 10% to 100% of the maximum setting range.
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 maximum setting range will differ depending on the model and the input terminal.
Example: K8AK-VW3 Using Input Terminal V3-COM
The maximum setting range will be 600 VAC/VDC and the setting range will be 60 to 600 V.
2. 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.
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 operating time.
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.
6
Wiring connection
V1-COM
V2-COM
V3-COM
V1-COM
V2-COM
V3-COM
DIP Switch Functions
Pin
1 s
Power ON
lock time
5 s
Manual reset
Resetting
method
Operating mode
AL1
AL2
Overvoltage
Undervoltage
Operating
Overvoltage
Overvoltage
mode
Undervoltage
Undervoltage
Overvoltage
Undervoltage
Note: All pins are set to OFF at the factory.
Single-phase power
Load
OFF ● ↑
1
2
OFF
ON ❍ ↓
ON
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A1
Power supply
voltage
A2
V1
Voltage input
C (COM)
V2
V3
14
11
Signal output
AL1 relay
12
signal
output
24
21
Signal output
AL2 relay
22
signal
output
3
4
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