K8AK-AS
2
Ratings and Specifications
Input Range
*1 The range is selected using connected terminals.
*2 The K8AK-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.)
Ratings
Model
Range
*1
Connection
terminal
Setting range
Input impedance
Input type
Overload capacity
K8AK-AS1
0 to 20 mA AC/DC
I1-COM
2 to 20 mA AC/DC,
10 to 100 mA AC/
DC, 50 to 500 mA
AC/DC
Approx. 5
Ω
Direct input
Continuous input at
120% of maximum input
1 s at 150%
0 to 100 mA AC/DC I2-COM
Approx. 1
Ω
Direct input
0 to 500 mA AC/DC I3-COM
Approx. 0.2
Ω
Direct input
K8AK-AS2
0 to 1 A AC/DC
I1-COM
0.1 to 1 A AC/DC,
0.5 to 5 A AC/DC,
0.8 to 8 A AC/DC
Approx. 0.12
Ω
(Load : 0.5 VA)
Direct input
or commer-
cially avail-
able CT
0 to 5 A AC/DC
I2-COM
Approx. 0.02
Ω
(Load : 1.5 VA)
0 to 8 A AC/DC
I3-COM
Approx. 0.02
Ω
(Load : 3 VA)
---
K8AK-AS3
0 to 100 A AC
I2-COM
10 to 100 A AC
*2
,
20 to 200 A AC
*2
---
OMRON CT Continuous input at 120% with
an OMRON CT (K8AC-
CT200L).
30 s at 200%
1 s at 600%
* CT capacity on primary side.
0 to 200 A AC
I3-COM
---
OMRON CT
Power supply voltage Isolated power supply
24 VAC/DC
100 to 240 VAC
Power consumption
24 VAC/DC: 2.0 VA/1.1 W max.
100 to 240 VAC: 4.6 VA max.
Operating value setting range (SV)
10% to 100% of the maximum value of the setting range
K8AK-AS1: 2 to 20 mA AC/DC
10 to 100 mA AC/DC
50 to 500 mA AC/DC
K8AK-AS2: 0.1 to 1 A AC/DC (Compatible with commercially available CTs.)
0.5 to 5 A AC/DC (Compatible with commercially available CTs.)
0.8 to 8 A AC/DC
K8AK-AS3: When used with the OMRON CT (K8AC-CT200L).
10 to 100 A AC
20 to 200 A AC
Operating value
100% operation at set value
Reset value setting range (HYS.)
5% to 50% of operating value
Reset method
Manual reset/automatic reset (switchable)
Note:
Manual reset: Turn OFF power supply for 1 s or longer.
Operating time setting range (T)
0.1 to 30 s
Startup lock time setting range (LOCK)
Note:
Enabled only for overcurrent operation.
0 to 30 s
(The startup lock timer starts when the input has reached approximately 30% or more of the set value.)
Note:
Enabled only for overcurrent operation.
Indicators
Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Input impedance
Refer to
Input Range
on this page.
Output relays
One SPDT relay (NO/NC switched using DIP switch.)
Output relay ratings
Rated load
Resistive load
5 A at 250 VAC
5 A at 30 VDC
Maximum contact voltage: 250 VAC or 30 VDC
Max. switching current: 5 A
Maximum switching capacity: 1,250 VA, 150 W
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations
3 A at 250 VAC/30 VDC:100,000 operations
Ambient operating temperature
−
20 to 60°C (with no condensation or icing)
Storage temperature
−
25 to 65°C (with no condensation or icing)
Ambient operating humidity
25% to 85% (with no condensation)
Storage humidity
25% to 85% (with no condensation)
Altitude
2,000 m max.
Terminal screw tightening torque
0.49 N·m
