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K8AK-VW

2

Ratings

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 (AL1 and AL2)

10% to 100% of the maximum value of the setting range
K8AK-VW2:  1 to 10 V AC/DC

3 to 30 V AC/DC
15 to 150 V AC/DC

K8AK-VW3:  20 to 200 V AC/DC

30 to 300 V AC/DC
60 to 600 V AC/DC

Operating value

100% operation at set value

Reset value

5% of operating value (fixed)

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

Power ON lock time (LOCK)

1 s or 5 s (Switched using DIP switch.)

Indicators

Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (AL1, AL2): Red

Input impedance

Refer to 

Input Range

 on previous page.

Output relays

Two SPDT relays (NC operation)

Output relay ratings

Rated load

Resistive load
5 A at 250 VAC
5 A at 30 VDC

Maximum switching capacity: 1,250 VA, 150 W
Minimum load: 5 VDC, 10 mA (reference values)
Mechanical life: 10 million operations min.
Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations

3 A at 250 VAC or 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 to 0.59 N·m

Terminal wiring method

Recommended wire
Solid wire: 2.5 mm

2

Twisted wires: AWG16, AWG18

Note: 1.

Ferrules with insulating sleeves must be used with twisted wires.

2.

Two wires can be twisted together.

Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact

Case color

N1.5

Case material

PC and ABS, UL 94 V-0

Weight

Approx. 150 g

Mounting

Mounts to DIN Track.

Dimensions

22.5 

×

 90 

×

 100 mm 

 (W

×

H

×

D)

Summary of Contents for 378174

Page 1: ...afety Precautions on page 9 Refer to page 8 for commonly asked questions For the most recent information on models that have been certified for safety standards refer to your OMRON website Setting ran...

Page 2: ...stive load 5 A at 250 VAC 5 A at 30 VDC Maximum switching capacity 1 250 VA 150 W Minimum load 5 VDC 10 mA reference values Mechanical life 10 million operations min Electrical life 5 A at 250 VAC or...

Page 3: ...4 CCC GB T 14048 5 Insulation resistance 20 M min Between all external terminals and the case Between all power supply terminals and all input terminals Between all power supply terminals and all outp...

Page 4: ...is no relay output during timer operation V1 21 V2 V3 24 22 11 12 14 A1 A2 C A1 A2 Single phase power supply Load Power supply voltage Power supply AC DC t t1 t Delay 250 ms reference value Delay 250...

Page 5: ...tes 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 operates Not light when both AL1 an...

Page 6: ...perating mode are set using the DIP switch located on the bottom of the Unit Model Setting range Wiring connection K8AK VW2 1 to 10 V AC DC V1 COM 3 to 30 V AC DC V2 COM 15 to 150 V AC DC V3 COM K8AK...

Page 7: ...sing Input Terminal V3 COM The maximum setting range will be 600 VAC VDC and the setting range will be 60 to 600 V Operating Time The operating time is set using the operating time knob T The operatin...

Page 8: ...nnection Diagram How to Measure the Operating Time Overvoltage Change the input suddenly from 0 to 120 of the set value and measure the time until the Unit operates Undervoltage Change the input sudde...

Page 9: ...9 N m Use of the product beyond its life may result in contact welding or burning Make sure to consider the actual operating conditions and use the product within its rated load and electrical life co...

Page 10: ...rely and become difficult to see 15 Do not use the product if it is accidentally dropped The internal components may be damaged 16 Be sure you understand the contents of this catalog and handle the pr...

Page 11: ...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...

Page 12: ...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 com Tokyo JA...

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