Omron K8AK-AS - Wiring Example; Timing Charts

K8AK-AS
4
Connections
Terminal Diagram
Note: 1. Do not connect anything to terminals that are shaded in gray.
2. There is no polarity for the DC power supply input.
3. For the current input, you can input only from the C terminal and one other terminal.
4. Refer to Setting Ranges and Wiring Connections on the I1, I2, and I3 current input terminals.
5. Use the recommended ferrules if you use twisted wires.
6. The K8AK-AS3 is designed to be used in combination with the OMRON K8AC-CT200L Current Transformer (CT).
Wiring Example
Directly Inputting a Current Using a CT
Timing Charts
●Overcurrent Operation Diagram
(Output Relay Drive Method: Normally Open)
DIP switch setting: SW3 OFF, SW4 OFF
●Undercurrent Operation Diagram
(Output Relay Drive Method: Normally Closed)
DIP switch setting: SW3 ON, SW4 ON
A1
C
A2
I1
I2
I3
11 12
Control Output
Relay output
250 VAC, 5 A (resistive load)
30 VDC, 5 A (resistive load)
A Current Input
Relay Output
Common
B Power Supply Voltage
100 to 240 VAC 24 VAC/DC
14
500 mA max. 100 mA max.
20 mA max.
8 A max. 5 A max. 1 A max.
100 A max.
200 A max.
(No polarity)
K8AK-AS1 100-240VAC
AB
A2
A1
A2
A1
C
AS1 AS2
AS3
CT
I1 I2 I3
C
I1 I2 I3
I1 I2
I3
CT
C
11 12 14
Single-phase
power supply
A1 A2
I1 I2 I3
11 12
Load
14
Power supply
voltage
A1
A2
Power
supply
AC/DC
C
Power
supply
AC/DC
A1 A2
I1 I2 I3
11 12
14
A1
A2
C
CT
Load
Single-phase
power supply
Power
supply voltage
t
Delay: 250 ms (reference value)
Power ON lock
(approx. 1 s)
Power supply
voltage
Set value
Hysteresis
Input
Alarm indicator
Relay 11-14
Relay 11-12
Lit
Flashing
t: Operating time (0.1 to 30 s)
LOCK: Startup lock time (0 to 30 s)
LOCK
t
30% of operating value
Power supply
voltage
Set value
Input
Relay 11-14
Relay 11-12
Alarm indicator
Lit
Flashing
t
t: Operating time (0.1 to 30 s)
Delay: 250 ms (reference value)
Hysteresis
(5% to 50% of operating value)
Power ON lock
(approx. 1 s)