Omron K8AK-AW Series, Manual

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K8AK-AW
8
Operation Methods
Setting Ranges and Wiring Connections
Connections
●
Input
Connect the input between the I1-COM, I2-COM, or I3-COM terminals, according to the input
current. Malfunctions may occur if the input is connected to unused terminals and the Unit will
not operate correctly.
Terminal I1 is not used by the K8AK-AW3.
If using the OMRON K8AC-CT200L CT, connect to terminals k and l on the K8AC-CT200L.
(Terminals kt and lt are not used.)
●
Power Supply
Connect the power supply to terminals A1 and A2.
●
Outputs
AL1 (SPDT relay) is output to terminals 11, 12, and 14.
AL2 (SPDT relay) is output to terminals 21, 22, and 24.
Note: Use the recommended ferrules if using twisted wires.
DIP Switch Settings
The resetting method, relay drive method, and operating mode are set using the DIP switch
located on the bottom of the Unit.
K8AK-AW
@ does not use SW1.
Setting Method
●
Setting Current
The current knob (SV) is used to set the current.
The current can be set to 10% to 100% of the maximum setting range.
Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the
same level.)
Use this as a guide to set the current.
The maximum setting range will differ depending on the model and the input terminal.
Example: K8AK-AW3 Using Input Terminals I3-COM
The maximum measuring current will be 200 A AC and the setting range will be 20 to 200 A.
Model Setting range Input type
Wiring
connections
K8AK-AW1
2 to 20 mA AC/DC Direct input I1-COM Note: The DC input terminals have no polarity.
* The K8AK-AW3 is designed to be used in combination
with the OMRON K8AC-CT200L Current Transformer
(CT). (Direct input is not possible.)
10 to 100 mA AC/DC Direct input I2-COM
50 to 500 mA AC/DC Direct input I3-COM
K8AK-AW2
0.1 to 1 A AC/DC
Direct input or
commercially
available CT
I1-COM
0.5 to 5 A AC/DC I2-COM
K8AK-AW3
10 to 100 A AC* OMRON CT I2-COM
20 to 200 A AC* OMRON CT I3-COM
<For K8AK-AW3>
Load
Current input
Signal output
AL1 relay
signal
output
Single-phase power
Power supply
voltage
K8AK-AW3
K8AC-
CT200L
C (COM)
A1
A2
I1
I2
I3
11
14
l
k
12
21
24
22
Signal output
AL2 relay
signal
output
DIP switch pins
SW3
ON
OFF
SW2
SW1
SW4
●
DIP Switch Functions
Note: All pins are set to OFF at the factory.
Pin
OFF
● ↑
ON
❍ ↓
Resetting
method
Manual reset
Not used.
●
--- ---
Automatic reset
❍
--- ---
Operating
mode
AL1 AL2
Overcurrent Undercurrent ---
● ●
Overcurrent Overcurrent ---
❍ ●
Undercurrent Undercurrent ---
● ❍
Overcurrent Undercurrent ---
❍ ❍
1
OFF
ON
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