Datasheet
K8DT-VW
4
Timing Charts
Overvoltage and Undervoltage Operation Diagram
DIP switch settings: SW3 and SW4 both ON or both OFF.
Note: 1. The K8DT-VW@ output is normally operative.
2.
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.
Overvoltage and Overvoltage Operation Diagram
DIP switch settings: SW3 ON and SW4 OFF.
Note: 1. The K8DT-VW@ output is normally operative.
2.
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.
Undervoltage and Undervoltage Operation Diagram
DIP switch settings: SW3 OFF and SW4 ON.
Note: 1. The K8DT-VW@ output is normally operative.
2.
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.
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
Input
Delay time: 250 ms
(reference value)
t
Flashing
Lit
Flashing
Lit
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
AL1 alarm indicator
AL2 alarm indicator
Contacts 11-14 or
transistor output
Overvoltage set value
(AL1)
Undervoltage set value
(AL2)
Power supply voltage
t: Operating time (0.1 to 30 s)
t1
t1: Power ON lock (1 s or 5 s)
t
t: Operating time (0.1 to 30 s)
Delay time: 250 ms
(reference value)
t: Operating time (0.1 to 30 s)
Flashing
Lit
Flashing
Lit
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
AL1 alarm indicator
AL2 alarm indicator
Contacts 11-14 or
transistor output
Overvoltage setting
(AL2)
Overvoltage setting
(AL1)
Input
Power supply voltage
t1: Power ON lock (1 s or 5 s)
t1
t
t
Delay time: 250 ms
(reference value)
Delay time: 250 ms
(reference value)
Lit
Flashing
Lit
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
AL1 alarm indicator
AL2 alarm indicator
Contacts 11-14 or
transistor output
Undervoltage set value
(AL2)
Input
Undervoltage set value
(AL1)
Power supply voltage
t1: Power ON lock (1 s or 5 s)
t: Operating time (0.1 to 30 s)
t1
t
t
Flashing
Delay time: 250 ms
(reference value)
Delay time: 250 ms
(reference value)
Voltage knob (AL1)
Voltage knob (AL2)
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
(Output: Yellow)
Lights for output (lit for normal operation)
Alarm indicators
(AL1 and AL2: 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 (AL1)
Used to set the voltage to 10% to 100% of
maximum setting range.
Voltage knob (AL2)
Used to set the voltage to 10% to 100% of
maximum setting range.
Operating time knob (T)
Used to set the operating time to 0.1 to 30 s.