Omron K8DT-AS Series, Manual

Page: 5 / 16

K8DT-AS
5
Timing Charts
Overcurrent Operation Diagram
(Output Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 OFF
Undercurrent Operation Diagram
(Output Drive Method: Normally Closed)
DIP switch setting: SW3 ON, 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
Lit Flashing
t
t: Operating time (0.1 to 30 s)
Delay time: 250 ms
(reference value)
LOCK: Startup lock time (0 to 30 s)
LOCK Power ON lock
(approx. 1 s)
Power supply
voltage
Contacts 11-14 or
transistor output
Contacts 11-12
Set value
Input
Alarm indicator
Hysteresis
30% of operating value
Hysteresis (5% to 50% of operating value)
Flashing
t
t: Operating time (0.1 to 30 s)
Power ON lock(approx. 1 s)
Power supply
voltage
Contacts 11-12
Set value
Alarm indicator
Lit
Contacts 11-14 or
transistor output
Input
Delay time: 250 ms (reference value)
Terminal block
(See note.)
Terminal block
(See note.)
Current knob (SV)
Hysteresis knob (HYS)
Operating time knob (T)
Startup lock time knob
(LOCK)
Power indicator
Output status indicator
Alarm indicator
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
Alarm indicator
(ALM: Red)
Lit when there is an overcurrent or
undercurrent.
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
Current knob (SV)
Used to set the current 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.
Startup lock time knob
(LOCK)
Used to set the startup lock time to 0 to 30 s.