Timing Charts - Omron K8DT-VS Series Manual

Timing Charts

Overvoltage Operation Diagram
(Output Drive Method: Normally Closed)
DIP switch setting: SW3 ON, SW4 OFF.
Power supply
voltage
Set value
Input
Flashing
Alarm indicator
Lit
Contacts 11-14 or
transistor output
Contacts 11-12
t: Operating time (0.1 to 30 s)
t
t1: Power ON lock (1 or 5 s)
t1
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.
Nomenclature
Front
Terminal block
(See Note.)
Power indicator
Output status indicator
Alarm indicator
Terminal block
(See Note.)
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.
Solid Wire Stranded Wires
8 mm
Hysteresis
(5% to 50% of operating value)
Delay time: 250 ms (reference value)
Voltage knob (SV)
Hysteresis knob (HYS)
Operating time knob (T)
Ferrules
8 mm 8 mm
Undervoltage Operation Diagram
(Output Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 ON.
Power supply
voltage
Input
Set value
Flashing
Alarm indicator
Contacts 11-14 or
transistor output
Contacts 11-12
t
t1: Power ON lock (1 or 5 s)
t1
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.
Indicators
Item
Power indicator
Lit when power is being supplied.
(PWR: Green)
Output status indicator
Lights for output
(OUT: Yellow)
Lit when there is an overvoltage or
undervoltage.
Alarm indicator The indicator flashes to indicate the error
(ALM: Red) status after the input has exceeded the set
value while the operating time is being
clocked.
Setting Knobs
Item
Used to set the voltage to 10% to 100% of
Voltage knob (SV)
maximum setting range.
Used to set the rest value to 5% to 50% of
Hysteresis knob (HYS)
the operating value.
Operating time knob (T) Used to set the operating time to 0.1 to 30 s.
K8DT-VS
Hysteresis
(5% to 50% of operating value)
Delay time: 250 ms (reference value)
Lit
t: Operating time (0.1 to 30 s)
Meaning
Usage
5