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New Product

Single-phase Current Relay

K8DT-AS

Detect errors in motors and other equipment 
through current changes.
Use in either overcurrent or undercurrent mode.

• Monitor AC or DC currents with one Relay.

• Use with commercially available CTs (CT secondary side: 0 to 1 A or 0 to 5 A).

• Settings for the operating value, hysteresis, startup lock time, and operating time.

• Width of 17.5 mm to reduce space required in panels.

• Push-In Plus Technology that reduce wiring work.

Double-insertion holes for crossover wiring (all terminals).

• UL listed for easy shipping to North America.

• Models added with transistor outputs for superior contact reliability.

• RoHS compliant.

Ordering Information

Single-phase Current Relay

*

The K8DT-AS3

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 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.)

OMRON CT

Commercially Available CTs 

*

*

If you use a commercially available CT, do not exceed the overload 
capacity of the K8DT-AS2.

Options (Order Separately)

Front Cover

Refer to 

Safety Precautions

 on page 10

Refer to page 9 for commonly asked questions.

For the most recent information on models 
that have been certified for safety 
standards, refer to your OMRON website.

Setting range

Power supply voltage

Output

Model

2 to 20 mA AC/DC, 

10 to 100 mA AC/DC, 

50 to 500 mA AC/DC

24 VAC/DC

Relay: SPDT contact output

K8DT-AS1CD

Transistor: Open collector

K8DT-AS1TD

100 to 240 VAC

Relay: SPDT contact output

K8DT-AS1CA

Transistor: Open collector

K8DT-AS1TA

0.1 to 1 A AC/DC, 

0.5 to 5 A AC/DC

24 VAC/DC

Relay: SPDT contact output

K8DT-AS2CD

Transistor: Open collector

K8DT-AS2TD

100 to 240 VAC

Relay: SPDT contact output

K8DT-AS2CA

Transistor: Open collector

K8DT-AS2TA

10 to 100 A AC 

*

20 to 200 A AC 

*

 

24 VAC/DC

Relay: SPDT contact output

K8DT-AS3CD

Transistor: Open collector

K8DT-AS3TD

100 to 240 VAC

Relay: SPDT contact output

K8DT-AS3CA

Transistor: Open collector

K8DT-AS3TA

Appearance

Input range

Applicable 

Relay

Model

10 to 100 A AC, 

20 to 200 A AC

K8DT-AS3

K8AC-CT200L

Appearance

CT current on secondary 

side

Applicable Relay

0 to 1 A AC,

0 to 5 A AC

K8DT-AS2

Appearance

Model

Y92A-D1A

Содержание K8DT-AS Seriesl

Страница 1: ...K8DT AS2 Options Order Separately Front Cover Refer to Safety Precautions on page 10 Refer to page 9 for commonly asked questions For the most recent information on models that have been certified for...

Страница 2: ...DC Approx 5 Direct input Continuous input at 120 of maximum input 1 s at 150 100 mA AC DC I2 COM 10 to 100 mA AC DC Approx 1 Direct input 500 mA AC DC I3 COM 50 to 500 mA AC DC Approx 0 2 Direct input...

Страница 3: ...rules Applicable wire size 0 25 to 1 5 mm2 AWG24 to AWG16 Wire insertion force 8 N max for AWG20 wire Screwdriver insertion force 15 N max Wire stripping length 8 mm Ferrule length 8 mm Current capaci...

Страница 4: ...copper wires with a rating of 75 C or an equivalent rating Inside Inside 1 Current Input AS1 2 Output C Relay Output T Transistor Output 3 Power Supply Voltage A 100 to 240 VAC D 24 VAC DC No polarit...

Страница 5: ...ge Contacts 11 12 Set value Alarm indicator Lit Contacts 11 14 or transistor output Input Delay time 250 ms reference value Terminal block See note Terminal block See note Current knob SV Hysteresis k...

Страница 6: ...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 I...

Страница 7: ...et Value SV of 50 and Overcurrent Operation Operation will be at 100 A and resetting at 90 A when the hysteresis HYS is set to 10 Operating Time The operating time is set using the operating time knob...

Страница 8: ...3 1 7 1 7 9 3 76 Two M5 screw holes or two 5 5 dia holes OMRON CT K8AC CT200L Mounting Hole Dimensions Note The OMRON Current Transformer CT is designed to be used with the K8DT AS3 Use terminals k an...

Страница 9: ...ely 30 A The startup current will exceed the overload capacity rating 150 for 1 s of the K8DT AS1 and K8DT AS2 and result in failure of the Relay To monitor the motor load use the K8DT AS3 Overload ca...

Страница 10: ...ails monitoring and alarm outputs may fail to operate This may result in physical damage to the facilities equipment or other devices that are connected to it To reduce this risk inspect the Relay reg...

Страница 11: ...pply power to the product 22 Do not install the product immediately next to heat sources 23 Perform periodic maintenance 24 Do not wire anything to the release holes 25 When you insert a flat blade sc...

Страница 12: ...rom the release hole Checking Connections After the insertion pull gently on the wire to make sure that it will not come off and the wire is securely fastened to the terminal block To prevent short ci...

Страница 13: ...re is basic insulation between the power supply terminals and input terminals There is basic insulation between the power supply terminals and output terminals There is basic insulation between the in...

Страница 14: ...MEMO 14...

Страница 15: ...CONNECTED WITH THE PRODUCTS WHETHER SUCH CLAIM IS BASED IN CONTRACT WARRANTY NEGLIGENCE OR STRICT LIABILITY Further in no event shall liability of Omron Companies exceed the individual price of the Pr...

Страница 16: ...IL 60169 U S A Tel 1 847 843 7900 Fax 1 847 843 7787 Regional Headquarters OMRON EUROPE B V Wegalaan 67 69 2132 JD Hoofddorp The Netherlands Tel 31 2356 81 300 Fax 31 2356 81 388 Contact www ia omron...

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