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Temperature Monitoring Relay

K8AK-TH

Compact and Slim Relay Ideal for 
Temperature Alarms and Monitoring

• Excessive temperature increases can be prevented and 

abnormal temperatures can be monitored.

• Temperature monitoring in slim design with a width of just 

22.5 mm.

• Rotary switches simplifies temperature settings.
• Universal-input support for thermocouple or platinum 

resistance thermometer sensor input.

• Change the output relay between normally open and 

normally closed operation.

• Alarm status identification with LED indicator.

Self-holding output.

Ordering Information

K8AK-TH (Temperature Input Models)

* Refer to 

Setting Ranges

 on page 3 for the setting ranges.

Note:

When ordering, designate the power supply specification. Different Relay models are used for 100 to 240 VAC and 24 VAC/VDC.

Refer to 

Safety Precautions

 on page 8.

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

Power supply 

voltage

Type

Output relays

Input types

Setting units (setting range)

Model

100 to 240 VAC Temperature 

input

1 relay

Thermocouple or platinum 
resistance thermometer

Setting unit: 1

°

C or 1

°

F (0 to 999

°

C/

°

F) K8AK-TH11S 100-240VAC

Thermocouple

Setting unit: 10

°

C/

°

F*

K8AK-TH12S 100-240VAC

24 VAC/DC

Thermocouple or platinum 
resistance thermometer

Setting unit: 1

°

C or 1

°

F (0 to 999

°

C/

°

F) K8AK-TH11S  24VAC/DC

Thermocouple

Setting unit: 10

°

C/

°

F*

K8AK-TH12S  24VAC/DC

Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]

Summary of Contents for K8AK-TH

Page 1: ...or the setting ranges Note When ordering designate the power supply specification Different Relay models are used for 100 to 240 VAC and 24 VAC VDC Refer to Safety Precautions on page 8 For the most r...

Page 2: ...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...

Page 3: ...setting increment 10 C Input K J T E B R S PLII Setting temperature range 3 200 3 100 3 000 2 900 2 800 2 700 2 600 2 500 2 400 2 300 2 200 2 100 2 000 1 900 1 800 1 700 1 600 1 500 1 400 1 300 1 200...

Page 4: ...ther error Power supply Relay output latched 11 to 14 LATCH_RST or external inputs 4 to 5 Temperature alarm or other error Power supply PWR indicator SV Protect Mode Power supply ALM indicator Tempera...

Page 5: ...e than one million times If you press and hold the LATCH_RST button for 5 seconds or longer the SV Protect Mode will go into effect When SV Protect Mode is enabled the PWR indicator flashes To disable...

Page 6: ...ult All OFF SW8 Not used R_SW3 K8AK TH12S R_SW2 R_SW1 SW 1 2 3 4 K 5 6 7 J T E B R S PLII Input type ON OFF 100 C F units 0 to 9 10 C F units 0 to 9 Upper limit alarm Lower limit alarm With latching W...

Page 7: ...ated The protection function can be released by pressing the output latch reset button on the Temperature Monitoring Relay for at least 5 s or by turning ON the input to the external input terminal fo...

Page 8: ...he side panel take effect when the power is turned ON If the Temperature Monitoring Relay fails monitoring and alarm outputs may fail to operate This may result in physical damage to the facilities eq...

Page 9: ...ring Relay to stabilize Take this time into account when you design the control panel 14 Allow at least 30 minutes for the product to warm up During this time the temperature measurements will be inco...

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