Datasheet
K8DT-VS
5
Timing Charts
Overvoltage Operation Diagram
(Output Drive Method: Normally Closed)
DIP switch setting: SW3 ON, SW4 OFF.
Undervoltage Operation Diagram
(Output Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 ON.
Nomenclature
Front
Note: Use solid wires, stranded wires, or ferrules to connect to the
terminals.
To maintain the withstand voltage after connecting the
terminals, insert 8 mm of exposed conductor into the terminal.
Indicators
Setting Knobs
Note: The power ON lock prevents unnecessary alarms from being
generated during the instable period when the power is first
turned on. There is no contact output during timer operation.
Delay time: 250 ms (reference value)
Hysteresis
(5% to 50% of operating value)
Lit
Flashing
t1
t1: Power ON lock (1 or 5 s)
t
t: Operating time (0.1 to 30 s)
Input
Power supply
voltage
Contacts 11-14 or
transistor output
Contacts 11-12
Set value
Alarm indicator
Note: The power ON lock prevents unnecessary alarms from being
generated during the instable period when the power is first
turned on. There is no relay output during timer operation.
Power supply
voltage
Contacts 11-14 or
transistor output
Contacts 11-12
Set value
Alarm indicator
Input
Delay time: 250 ms (reference value)
Hysteresis
(5% to 50% of operating value)
Lit
Flashing
t1
t1: Power ON lock (1 or 5 s)
t
t: Operating time (0.1 to 30 s)
Voltage knob (SV)
Hysteresis knob (HYS)
Operating time knob (T)
Power indicator
Output status indicator
Alarm indicator
Terminal block
(See Note.)
Terminal block
(See Note.)
8 mm 8 mm
Solid Wire
8 mm
Stranded Wires Ferrules
Item Meaning
Power indicator
(PWR: Green)
Lit when power is being supplied.
Output status indicator
(OUT: Yellow)
Lights for output
Alarm indicator
(ALM: Red)
Lit when there is an overvoltage or
undervoltage.
The indicator flashes to indicate the error
status after the input has exceeded the set
value while the operating time is being
clocked.
Item Usage
Voltage knob (SV)
Used to set the voltage to 10% to 100% of
maximum setting range.
Hysteresis knob (HYS)
Used to set the rest value to 5% to 50% of
the operating value.
Operating time knob (T) Used to set the operating time to 0.1 to 30 s.