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K8AK-TH

5

Nomenclature

Front Operations

Error (ALM indicator: Flashing)

One of the following items 1 to 3 has occurred.

1. The sensor circuit is disconnected or the 

temperature setting is out of the specified range.

2. The temperature setting is out of the specified range.
3. There is a problem in the internal circuits.

Corrections

1. Disable SV Protect Mode.
2. Disable the latch.
3. Check for incorrect wiring, circuit disconnections, 

short circuits, and whether the input type and 
temperature settings are correct.

4. If the wiring and settings are correct, reset the power 

supply.
If the Unit resumes normal operation, the problem 
may have been caused by noise.
If the Unit does not resume normal operation, it must 
be replaced.

* The non-volatile memory stores the event when a latched output is 

disabled, or the SV Protect Mode is enabled or disabled. An error 
may occur if the data is updated more 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 the SV Protect Mode, press and hold the LATCH_RST 
Button for at least 5 seconds.

Alarm Setting Rotary Switch

Point the arrow to the required number.

Note: 1.

Use solid-core wires of 2.5-mm

2

 max. or ferrules with an 

insulation sleeve to wire to this terminal.
To ensure the dielectric strength of the connection, do not 
expose more than 8 mm of wire for insertion into the 
terminal.

Recommended Ferrules

Phoenix Contact

Al 1.5-8BK (for AWG16)

•Al 1-8RD (for AWG18)

•Al 0,75-8GY (for AWG18)

2.

Screw tightening torque: 0.49 to 0.59 N·m

Power supply

Relay output

ALM indicator (Red)

R_SW3

External input 

(LATCH_RST)

Sensor input

PWR Indicator (Green)

LATCH_RST 

button*

R_SW2

R_SW1

Temperature unit (Black 

out the unnecessary 

label: °C or °F)

8 mm max.

8 mm max.

For a solid wire 
of 2.5-mm

2

 of max.

For ferrules with 
an insulation sleeve.

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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