Datasheet

K8AK-VW
4
Wiring Example
Timing Charts
●Overvoltage and Undervoltage Operation
Diagram
DIP switch settings: SW3 and SW4 both ON or both OFF.
Note: 1. The K8AK-VW@ output relay 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 (Overvoltage Pre-alarm Mode)
DIP switch settings: SW3 ON and SW4 OFF.
Note: 1. The K8AK-VW@ output relay 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 (Undervoltage Pre-alarm Mode)
DIP switch settings: SW3 OFF and SW4 ON.
Note: 1. The K8AK-VW@ output relay 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.
V1
21
V2
V3
24
22
11 12
14
A1 A2
C
A1
A2
Single-phase
power supply
Load
Power
supply voltage
Power supply
AC/DC
t
t1
t
AL1 alarm indicator
Overvoltage (AL1) relay
(11-14)
Input
Undervoltage (AL2) relay
(21-24)
Overvoltage set value (AL1)
Undervoltage set value (AL2)
Hysteresis: Fixed at 5
%
Flashing
Lit
Flashing
Lit
Hysteresis: Fixed at 5
%
Power supply voltage
t: Operating time (0.1 to 30 s)
t1: Power ON lock (1 s or 5 s)
AL2 alarm indicator
t: Operating time (0.1 to 30 s)
t1
AL1 alarm indicator
Overvoltage (AL1) relay
(11-14)
Input
Overvoltage (AL2) relay
(21-24)
Overvoltage setting (AL1)
Hysteresis: Fixed at 5%
Lit
Flashing
Hysteresis: Fixed at 5%
Power supply voltage
t1: Power ON lock (1 s or 5 s)
AL2 alarm indicator
Overvoltage setting (AL2)
Flashing
Lit
t1
AL1 alarm indicator
Input
Undervoltage (AL2) relay
(21-24)
Undervoltage set value (AL2)
Hysteresis: Fixed at 5%
Flashing
Lit
Hysteresis: Fixed at 5%
Power supply voltage
t1: Power ON lock (1 s or 5 s)
AL2 alarm indicator
Undervoltage set value (AL1)
Undervoltage (AL1) relay
(11-14)
Flashing
Lit