Datasheet

K8AK-PW
4
Connections
Terminal Diagram
Note: 1. Do not connect anything to terminals that are shaded in gray.
2. Use the recommended ferrules if you use twisted wires.
Wiring Example
Timing Charts
●Overvoltage and Undervoltage Operation
Diagram
Note: 1. K8AK-PW@ output relay is normally operative.
2. The power ON lock function prevents unnecessary alarms
from being generated during the unstable period when the
power is first turned ON. There is no relay output during
timer operation.
3. L1 and L2 use the same power supply and will not operate
due to an undervoltage if they drop below the rated input of
60%.
L1
L2
L3
11 12
Control Output
Relay output
250 VAC, 5 A (resistive load)
30 VDC, 5 A (resistive load)
14
Relay Output
Input Voltages
Monitoring 3-phase,
3-wire Power Supply
Monitoring 3-phase,
4-wire Power Supply
or
21
24
22
Relay Output
3-phase,
3-wire
power
supply
3-phase,
4-wire
power
supply
N
_
_
Undervoltage
Overvoltage
__N
__N
L1
L2
L3
L1
L2
L3
21 24 22
11 12 14
21
22
L1
L2
L3
11 12
14
N_
_
L1
L2
L3
N
24
3-phase
voltage
Motor
Power supply
AC/DC
t
t1
t
L1
L2
L3
Hysteresis: Fixed at 5%
Hysteresis: Fixed at 5%
t: Operating time (0.1 to 30 s)
t1: Power ON lock (1 s or 5 s)
Flashing
Lit
Flashing
Lit
Overvoltage alarm indicator
Undervoltage alarm indicator
Overvoltage relay 11-14
Undervoltage relay 21-24
Undervoltage set value
Overvoltage
set value
Input
t: Operating time (0.1 to 30 s)