Setting Knobs - Omron K8DT-AS Series Manual

Timing Charts
Overcurrent Operation Diagram
(Output Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 OFF
Power supply
voltage
Set value
Hysteresis
Input
30% of operating value
Alarm indicator
Contacts 11-14 or
transistor output
Contacts 11-12
LOCK: Startup lock time (0 to 30 s)
Power ON lock LOCK
(approx. 1 s)
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
Delay time: 250 ms
Flashing Lit
(reference value)
t: Operating time (0.1 to 30 s)
t
Current knob (SV)
Hysteresis knob (HYS)
Operating time knob (T)
Startup lock time knob
(LOCK)
Ferrules
8 mm 8 mm
Undercurrent Operation Diagram
(Output Drive Method: Normally Closed)
DIP switch setting: SW3 ON, SW4 ON
Power supply
voltage
Input
Set value
Flashing
Alarm indicator
Contacts 11-14 or
transistor output
Contacts 11-12
t
Power ON lock(approx. 1 s)
Indicators
Item
Power indicator
Lit when power is being supplied.
(PWR: Green)
Output status indicator
Lights for output
(Output: Yellow)
Lit when there is an overcurrent or
undercurrent.
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 current to 10% to 100% of
Current 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.
Startup lock time knob
Used to set the startup lock time to 0 to 30 s.
(LOCK)
K8DT-AS
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