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K8AK-AW

8

Undercurrent and Undercurrent Operation Diagram (Undercurrent/Undercurrent Monitoring Mode) 
(When Using as an Undercurrent Pre-alarm)

DIP switch settings: SW3 OFF and SW4 ON

Nomenclature

Front

Indicators

Setting Knobs

Note: 1.

Use either a solid wire of 2.5 mm

2

 

maximum or a ferrule with insulating 
sleeve for the terminal connection.
The length of the exposed current-
carrying part inserted into the terminal 
must be 8 mm or less to maintain 
dielectric strength after connection. 
<Recommended ferrules>

Phoenix Contact

Al 1,5-8BK (for AWG16)

Al 1-8RD (for AWG18)

Al 0,75-8GY (for AWG18)

2.

Tightening torque: 0.49 to 0.59 N·m

Note: 1. The K8AK-AW

 output contacts are normally operative. 

 

2. Power ON lock prevents unnecessary alarms from being generated during the unstable period when the power is first turned ON. 

 

  There is no contact output during timer operation. 

 

3. There is no startup lock time function for monitoring undercurrent.

Lit

Flashing

Lit

Hysteresis: Fixed at 5%

Hysteresis: Fixed at 5%

AL1 alarm indicator

AL2 alarm indicator

Undercurrent (AL1)

contacts (11-14)

0 A

Undercurrent set value (AL2)

Undercurrent (AL2)

contacts (21-24)

Undercurrent set value (AL1)

K8AK power supply voltage

Flashing

t: Operating time (0.1 to 30 s)

t: Operating time (0.1 to 30 s)

t

t

Delay: 250 ms
(reference value)

Delay: 250 ms
(reference value)

Delay: 250 ms
(reference value)

Delay: 250 ms
(reference value)

Flashing

Flashing

Power ON lock (approx. 1 s)

Operating time

(0.1 to 30 s)

Power indicator

Relay status indicator

Current knob (AL1)

Operating time knob (T)

Startup lock time knob
(LOCK)

Alarm indicator

Terminal block

 (See notes 1 and 2.)

Terminal block

 (See notes 1 and 2.)

Alarm indicator

Current knob (AL2)

Item

Meaning

Power indicator (PWR: Green) Lit when power is being supplied.

Relay status indicator 
(RY: Yellow)

Lit when relay is operating. 

Alarm indicator 
(ALM: Red)

Lit when there is an overcurrent or un-
dercurrent. 
The indicator flashes to indicate the er-
ror status after the input has exceeded 
the set value while the operating time is 
being clocked. 

Item

Usage

Current knob (AL1)

Used to set the current to 10% to 100% 
of maximum setting range.

Current knob (AL2)

Used to set the current to 10% to 100% 
of maximum setting range.

Operating time knob (T)

Used to set the operating time to 0.1 to 30 s.

Startup lock time knob 
(LOCK)

Used to set the startup lock time to 0 to 30 s.
Use for the purpose of preventing unwant-
ed operation, e.g., as a result of inrush cur-
rent during load startup. There will be no 
alarm output when the startup lock timer is 
operating.

For 2.5 mm

2

 or 

smaller solid wires

8 mm max. 

For ferrules with 
an insulation sleeve.

8 mm max.

Содержание K8AK-AS1 24VAC/DC

Страница 1: ...ent Transformer CT Direct input is not possible Accessory Order Separately OMRON CT Commercially Available CTs If you use a commercially available CT do not exceed the overload capacity of the K8AK AW...

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

Страница 3: ...puts ALM Red Input impedance Refer to Input Range on previous page Output relays Two SPDT relay outputs normally closed operation Output relay ratings Rated load Resistive load 5 A at 250 VAC 5 A at 3...

Страница 4: ...minals Between input terminals and output terminals Dielectric strength 2 000 VAC for one minute Between external terminals and case Between power supply terminals and input terminals Between power su...

Страница 5: ...h the OMRON K8AC CT200L Current Transformer CT Wiring Example Directly Inputting a Current Using a CT Always turn on the control power supply for the K8AK at least 2 seconds before turning on the powe...

Страница 6: ...AL1 Contact b for the approx 1 second interval immediately after the K8AK control power supply is turned on After that a switch to contact a will be made as an overcurrent state is no longer present A...

Страница 7: ...K8AK power supply voltage Power ON Undercurrent AL2 contacts 21 24 Undercurrent set value AL2 30 of AL1 current set value Overcurrent AL1 contacts 11 14 Lit AL2 alarm indicator AL1 alarm indicator Ove...

Страница 8: ...ng time 0 1 to 30 s t Operating time 0 1 to 30 s t t Delay 250 ms reference value Delay 250 ms reference value Delay 250 ms reference value Delay 250 ms reference value Flashing Flashing Power ON lock...

Страница 9: ...ched 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...

Страница 10: ...de to set the startup lock time The startup lock time will start when the input current reaches 30 or more of the set value Use startup lock time to prevent unwanted operation e g as a result of inrus...

Страница 11: ...figure 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...

Страница 12: ...cified torque of 0 49 to 0 59 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...

Страница 13: ...ifficult 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 product according t...

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: ...0169 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 com...

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