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10

19.

When cleaning the product, do not use thinners or solvents. Use 

commercial alcohol.

20.

Make sure the power and output indicators operate correctly. 

Depending on the application environment, the indicators and 

other plastic parts may wear prematurely and become difficult to 

see. Check and replace these parts regularly.

21.

The terminal blocks may heat up to 65

°

C. Use care when 

handling them.

22.

Do not use the product if it is accidentally dropped. The internal 

components may be damaged.

23.

Be sure you understand the contents of this catalog and handle 

the product according to the instructions provided.

24.

Do not install the product in any way that would place a load on it.

25.

When discarding the product, properly dispose of it as industrial 

waste.

26.

When using the product, remember that the power supply 

terminals carry a high voltage.

27.

The product must be handled only by trained electrician.

28.

Prior to operation, check the wiring before you supply power to 

the product.

29.

Do not install the product immediately next to heat sources.

Observe the following operating 

methods to prevent failure and 

malfunction.

1.

Use operating power, input power, and other power supplies and 

converters with suitable capacities and rated outputs.

2.

Allow only qualified personnel to manage or handle the product.

3.

Use a precision screwdriver or similar tool to adjust the setting 

knobs.

4.

The distortion in the input waveform for the K8AK-AS, K8AK-AW, 

K8AK-PH, K8AK-PA, K8AK-PM, or K8DS-PH must be 30% max. 

If the input waveform is distorted beyond this level, it may cause 

unnecessary operation.

Do not use the K8AK-VS or K8AK-VW in circuits with waveform 

distortion. Error will be large due to waveform distortion.

5.

Error will be large if the K8AK-AS, K8AK-AW, K8AK-VS, or K8AK-

VW is used for thyristor or inverter control.

The K8AK-PH, K8AK-PA, K8AK-PM, K8AK-PW, or K8DS-PH 

cannot be used on the secondary side of an inverter. To use the 

product on the load side of an inverter, install a noise filter on the 

primary side of the inverter.

6.

To reduce the error in the setting knob, always turn the setting 

knob from the minimum setting toward the maximum setting.

7.

Phase loss is detected for the K8AK-PA or K8AK-PM only when 

the phase loss occurs between the input contacts and the power 

supply. Phase loss is not detected on the load side.

8.

Phase loss can be detected only from the input contacts to the 

power supply side by the K8AK-PH, K8AK-PA, K8AK-PM, or 

K8DS-PH. Phase loss cannot be detected from the input contacts 

to the load side.

Mounting and Removing the K8AK

Mounting to DIN Track

1. Catch the upper hook on the DIN Track.

2. Push the product onto the Track until the hooks lock into place.

To remove the product, pull down on the bottom hook with a flat-

blade screwdriver and lift up on the product.

Mounting and Removing the K8DS

The product may be mounted in any direction, but it must be 

mounted securely and as level as possible.

To mount the product to the DIN Track, hook it on the DIN Track at 

(A) and then press in on the Unit in direction (B).

To remove the product, insert a flat-blade screwdriver at (C) and 

pull down the hook to release the Unit.

Leave at least 30 mm of space between the product and other 

devices to allow easy installation and removal.

Adjusting the Setting Knobs

Use a screwdriver to adjust the setting knobs. The knobs have a 

stopper that prevents them from turning beyond the full right or left 

position. Do not force a knob beyond these points.

* (Not applicable to the K8AK-PH and K8DS-PH.)

Precautions for Correct Use

A

B

PFP-100N (100 cm)

PFP-50N (50 cm)

Applicable DIN Tracks:

(A)

(B)

30 mm min.

(C)

Hook

Setting knob

Summary of Contents for K8AK-AS

Page 1: ...ble Accessory Order Separately OMRON CT Commercially Available CTs If you use a commercially available CT do notexceed the overload capacity of the K8AK AS2 Refer to Safety Precautions for the K8AK Se...

Page 2: ...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 t...

Page 3: ...humidity rated power supply voltage DC or 50 60 Hz sine wave input Operating time 50 ms at 25 C and 65 humidity rated power supply voltage Applicable standards Conforming standards EN60947 5 1 Install...

Page 4: ...5 and 10 mm min Test method Relationship of Mounting Distance between K8AK AS Relays and Input Current Reference Values The following diagram shows the relationship between the mounting distances and...

Page 5: ...e notes 1 and 2 Terminal block See notes 1 and 2 Item Meaning Power indicator PWR Green Lit when power is being supplied Relay status indicator RY Yellow Lit when relay is operating Alarm indicator AL...

Page 6: ...input terminal Example K8AK AS3 Using Input Terminals I3 COM The maximum setting range will be 200 A AC and the setting range will be 20 to 200 A 2 Hysteresis Hysteresis is set using the hysteresis k...

Page 7: ...lashes when the set value and the input have reached the same level Use this as a guide to set the startup lock time The startup lock time will start when the input current reaches 30 or more of the s...

Page 8: ...ure for information on the motor startup current For a motor with a rating of 5 A the startup current will be approximately 30 A The startup current will exceed the overload capacity rating 150 for 1...

Page 9: ...s 2 Use and store the product in a location where the ambient temperature and humidity are within the specified ranges If applicable provide forced cooling 3 Mount the product in the correct direction...

Page 10: ...will be large if the K8AK AS K8AK AW K8AK VS or K8AK VW is used for thyristor or inverter control The K8AK PH K8AK PA K8AK PM K8AK PW or K8DS PH cannot be used on the secondary side of an inverter To...

Page 11: ...nt or addition to the above warranty See http www omron247 com or contact your Omron representative for pub lished information 14 Limitation on Liability Etc OMRON COMPANIES SHALL NOT BE LIABLE FOR SP...

Page 12: ...rasil 55 11 2101 6300 www omron com br OMRON ARGENTINA SALES OFFICE Cono Sur 54 11 4783 5300 OMRON CHILE SALES OFFICE Santiago 56 9 9917 3920 OTHER OMRON LATIN AMERICA SALES 54 11 4783 5300 OMRON INDU...

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