K8DT-AS

6

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.

For the K8DT-AS3, the I1 terminal is not used. For the K8DT-AS2, the I3 terminal is not used.

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

For a relay output, the SPDT contacts are output on terminals 11, 12, and 14. For a transistor output,

the output is on terminals 11 and 14.

The internal circuit of the transistor output is NPN, but application is possible for either a sinking or

sourcing output.

DIP Switch Settings

The reset method, drive output method, and operating mode are set using the DIP switch located on the front of the Unit.

For the K8DT-AS

@, SW1 is not used.

Note: Open the DIP switch cover to set the DIP switch.

Keep the DIP switch cover closed while the power supply to the Relay is ON.

Model

Setting range

Input type

Wiring

connections

K8DT-AS1

2 to 20 mA AC/DC

Direct input

I1-COM

10 to 100 mA AC/DC

Direct input

I2-COM

50 to 500 mA AC/DC

Direct input

I3-COM

K8DT-AS2

0.1 to 1 A AC/DC

Direct input or

commercially available

CT

I1-COM

0.5 to 5 A AC/DC

I2-COM

K8DT-AS3

10 to 100 A AC

*

OMRON CT

I2-COM

20 to 200 A AC

*

OMRON CT

I3-COM

Note: The DC input terminals have no polarity.

* The K8DT-AS3 is designed to be used in

combination with the OMRON K8AC-CT200L

Current Transformer (CT). (Direct input is not

possible.)

Single-phase power

K8DT-AS3

K8AC-

CT200L

Current input

or

C (COM)

A1

A2

I1

I2

I3

Load

Power supply

voltage

11

14

11

14

l

k

12

Contact output

Transistor output

<For K8DT-AS3>

load

K8DT

11

Sinking

In the case of sinking output applications

14

load

K8DT

11

In the case of sourcing output applications

14

Sourcing

SW3

DIP switch pins

SW2

SW1

SW4

DIP Switch Functions

Note: All pins are set to OFF by default.

Pin

ON

❍↑

OFF

●↓

Resetting

method

Automatic reset

Not used.

❍

---

---

Manual reset

●

---

---

Output drive

method

Normally closed

---

❍

---

Normally open

---

●

---

Operating mode

Undercurrent

---

---

❍

Overcurrent

---

---

●

1

ON

OFF

2

3

4