Omron K8AK-AW Series Manual page 6

K8AK-AW
Timing Charts
●Overcurrent and Undercurrent Operation
Diagram
DIP switch settings: SW3 ON and SW4 ON, or SW3 OFF and SW4
OFF
Power
supply voltage
Overcurrent
set value (AL1)
Input
Undercurrent
set value (AL2)
AL1 alarm indicator
Flashing
AL2 alarm indicator
Overcurrent (AL1)
contacts (11-14)
Undercurrent (AL2)
contacts (21-24)
LOCK
LOCK:
Startup lock time
(0 to 30 s)
t
Note 1. The K8AK-AW@ output contacts are normally operative.
Note 2. The startup lock prevents unnecessary alarms from being generated during the
unstable period when the power is first turned ON. There is no contact output
during timer operation.
●Overcurrent and Overcurrent Operation
Diagram (Overcurrent Pre-alarm Mode)
DIP switch settings: SW3 ON and SW4 OFF.
Power
supply voltage
Overcurrent
set value (AL1)
Overcurrent
set value (AL2)
Input
Flashing
AL1 alarm indicator
Flashing
AL2 alarm indicator
Overcurrent (AL1)
contacts (11-14)
Overcurrent (AL2)
contacts (21-24)
LOCK
LOCK:
Startup lock time
(0 to 30 s)
t
Note 1. The K8AK-AW@ output contacts are normally operative.
Note 2. The startup lock prevents unnecessary alarms from being generated during the
unstable period when the power is first turned ON. There is no contact output during
timer operation.
6
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
Flashing
Lit
t t: Operating time (0.1 to 30 s)
Lit
Delay: 250 ms
(reference value)
Delay: 250 ms
(reference value)
t: Operating time (0.1 to 30 s)
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
Lit
Lit
Delay: 250 ms
(reference value)
Delay: 250 ms
(reference value)
t: Operating time (0.1 to 30 s)
t
t: Operating time (0.1 to 30 s)
●Undercurrent and Undercurrent Operation
Diagram (Undercurrent Pre-alarm Mode)
DIP switch settings: SW3 OFF and SW4 ON.
Power
supply voltage
Input
Undercurrent
set value (AL1)
Undercurrent
set value (AL2)
Flashing
AL1 alarm indicator
Flashing
AL2 alarm indicator
Undercurrent (AL1)
contacts (11-14)
Undercurrent (AL2)
contacts (21-24)
LOCK
LOCK:
Startup lock time
(0 to 30 s)
t
t
Note 1. The K8AK-AW@ output contacts are normally operative.
Note 2. The startup lock prevents unnecessary alarms from being generated
during the unstable period when the power is first turned ON. There is no
contact output during timer operation.
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
Lit
Lit
Delay: 250 ms
(reference value)
Delay: 250 ms
(reference value)
t: Operating time (0.1 to 30 s)
t: Operating time (0.1 to 30 s)