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Temperature Monitoring Relay
K8AB-TH
CSM_K8AB-TH_DS_E_2_1
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. * Simple function settings using DIP switch. * Universal-input support for thermocouple or Pt100 sensor input. * Selectable output relay: Non-fail safe/fail safe. * Alarm status identification with LED indicator.
Refer to Safety Precautions for All Temperature Controllers.
Features
* This Temperature Monitoring Relay was designed specially for monitoring abnormal temperatures to prevent excessive temperature increase and to protect equipment. * A relay capacity of 3 A at 250 VAC (resistive load) is provided in a slim body only 22.5 mm wide. An output latch function is also supported. * Settings can be made and functions can be selected using the DIP switch. * Reduce the number of models by using universal-input support for thermocouple or Pt100 sensor input. Selecting Functions and Modes * The following settings are provided: alarm mode (upper limit/lower limit), enable/disable latch, C/F, relay output non-fail safe/fail safe, setting protection. Terminal Wiring with Ferrules * Wire with 2 x 2.5 mm2 solid wire or 2 x 1.5 mm2 wiring ferrules. Third-party Certification of CE Mark Compliance, Certified UL Standard Compliance, and Certified TUV and SUD Standard Compliance
Model Number Structure
Model Number Legend
K8AB-TH1@@
1 2 34
3. Setting Range 1: Low-temperature range (0 to 399C: setting in increments of 1C) 2: High-temperature range (0 to 1700C max.: setting in increments of 10C) 4. Output Form S: One SPDT relay output 1. Basic Model K8AB: Measuring and Monitoring Relay 2. Function TH1: Temperature Monitoring Relay
Ordering Information
List of Models
Size Supply voltage Type Number of outputs 1 (relay) Input type Setting unit (setting range) Model K8AB-TH11S K8AB-TH12S K8AB-TH11S K8AB-TH12S K8AB-TH 100 to 240 VAC Temperature 22.5 x 90 x 100 mm input 24 VAC/VDC Thermocouple/Pt100 Unit: 1C/F (0 to 399C/F) Thermocouple Thermocouple Unit: 10C/F (See note 1.) Unit: 10C/F (See note 1.) Thermocouple/Pt100 Unit: 1C/F (0 to 399C/F)
Note: 1. Refer to page 3 for setting ranges. 2. Specify the power supply voltage when ordering. Different models must be ordered for 100 to 240 VAC and 24 VAC/DC.
1
K8AB-TH
Specifications
Ratings
Item Allowable voltage range Power consumption Sensor inputs Output relay External inputs (for latch setting) Contact input Non-contact input K8AB-TH11S K8AB-TH12S Power supply voltage 5 VA max. Thermocouple: K, J, T, E, B, R, S, PLII One SPDT relay (3 A at 250 VAC, resistive load) ON: 1 k max., OFF: 100 k min. ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max. Leakage current: Approx. 10 mA Setting method Indicators Other functions Ambient operating temperature Ambient operating humidity Storage temperature Rotary switch setting (set of three switches) Power (PWR): Green LED, Relay output (ALM): Red LED Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output latch, setting protection, temperature unit C/F -10 to 55C (with no condensation or icing) Relative humidity: 25% to 85% -25 to 65C (with no condensation or icing) 100 to 240 VAC 50/60 Hz 85% to 110% of power supply voltage 2 W max. (24 VDC), 4 VA max. (24 VAC) Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100 24 VAC 50/60 Hz or 24 VDC
Characteristics
Setting accuracy hysteresis width Output relay Resistive load Inductive load Minimum load Maximum contact voltage Maximum contact current Maximum switching capacity Mechanical life Electrical life Sampling cycle Insulation resistance 2.0% of full scale 2C 3 A at 250 VAC (cos = 1), 3 A at 30 VDC (L/R = 0 ms) 1 A at 250 VAC (cos = 0.4), 1 A at 30 VDC (L/R = 7 ms) 10 mA at 5 VDC 250 VAC 3 A AC 1,500 VA 10,000,000 operations Make: 50,000 times, Break: 30,000 times 500 ms 20 M (at 500 V) between charged terminals and exposed uncharged parts 20 M (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals) 20 M (at 500 V) between contacts (open) 2,000 VAC 50/60 Hz for 1 min between charged terminals of different polarity Vibration of 10 to 55 Hz and acceleration of 50 m/s2 for 5 min with 10 sweeps each in X, Y, and Z directions 150 m/s2 (100 m/s2 for relay contacts) 3 times each in 6 directions in X, Y, and Z directions 130 g IP20 Non-volatile memory (number or writes: 200,000) EN 61010-1 EN 61326 EN 61010-1 (pollution level 2, overvoltage category II) EMI: Radiation Interference Field Intensity: Noise Terminal Voltage: EMS: Immunity ESD: Immunity RF: Immunity Burst: Immunity Conducted Disturbance: Immunity Surge: EN 61326 EN 55011 Group 1 Class A EN 55011 Group 1 Class A EN 61326 EN 61000-4-2: 4 kV contact discharge (level 2) 8 kV air discharge (level 3) EN 61000-4-3: 10 V/m, amplitude-modulated (80 MHz to 1 GHz, 1.4 GHz to 2 GHz) (level 3) EN 61000-4-4: 2 kV power line (level 3) 2 kV output line (relay output) (level 4) 1 kV measurement line and I/O signal lines (level 4) EN 61000-4-6: 3 V (0.15 to 80 MHz) (level 3) EN 61000-4-5: 1 kV line-to-line: power line, output line (relay output) (level 2) 2 kV line-to-ground: power line, output line (relay output) (level 3) EN 61000-4-8: 30 A/m (50Hz) continuous time EN 61000-4-11: 0.5 cycle, 100% (rated voltage)
Dielectric strength Vibration resistance Shock resistance Weight Degree of protection Memory protection Safety Standards Approved standards EMC Application standards EMC
Commercial Frequency Immunity Magnetic Field: Immunity Voltage Dip/Interrupting: Terminal screw tightening torque Crimp terminals Case color Case material Mounting Dimensions 0.54 to 0.55 N*m
Two solid wires of 2.5 mm2 or two ferrules of 1.5 mm2 with insulation sleeves can be tightened together. Munsell 5Y8/1 (ivory) ABS resin (self-extinguishing resin) Mounted to DIN Track or with M4 screws 22.5 x 100 x 90 mm (W x D x H)
2
K8AB-TH
Setting Ranges
K8AB-TH11S
Centigrade
Input Setting temperature range
500 400 300 200 100 0
K
399
J
399
T
399
E
399
Pt100
399
0
0
0
0
0
Minimum setting increment
1C
Fahrenheit
Input Setting temperature range
500 400 300 200 100 0
K
399
J
399
T
399
E
399
Pt100
399
0
0
0
0
0
Minimum setting increment
1F
K8AB-TH12S
Centigrade
Input
1,800 1,700 1,600 1,500 1,400 1,300 1,200 1,100 1,000 900 800 700 600 500 400 300 200 100 0
K
J
T
E
B
1,800
R
1,700
S
1,700
PLII
1,300
1,300
Setting temperature range
850 600 400
100 0 0 0 0 0 0 0
Minimum setting increment
10C
Fahrenheit
Input
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 1,100 1,000 900 800 700 600 500 400 300 200 100 0
K
J
T
E
B
3,200
R
3,000
S
3,000
PLII
2,300
2,300
Setting temperature range
1,500
1,100 700
300 0 0 0 0 0 0 0
Minimum setting increment
10F
3
K8AB-TH
Connections
Wiring Diagrams
K8AB-TH11S
Power supply voltage (See note 1.)
K8AB-TH12S
Power supply voltage (See note 1.)
Power supply Relay output
A1
A2
Power supply Relay output
A1
A2
14 11 12
14 11 12
External input (LATCH_RST) (See note 2.) Sensor input
4 1
5 2
6 3
Not used.
External input (LATCH_RST) (See note 2.) Sensor input
4 1
5 2
6 3
Not used. Not used.
Note: 1. The input power supply depends on the model: 100 to 240 VAC or 24 VAC/VDC (no polarity) 2. Wiring of the external input terminals is as shown below.
Thermocouple B
B
A Platinum resistance thermometer
Thermocouple
Operation (Using the Upper-limit Alarm Mode)
Output Latch Enabled (Default Setting: Latch Enabled)
Power supply Hysteresis width: 2C Alarm setting Input (current temperature) Alarm (red) indicator Latch reset (See note.) Non-fail safe, Alarm (relay) output Fail safe, Alarm (relay) output Note: The output latch is reset using the output latch reset button on the Temperature Monitoring Relay or the external input terminal. Alarm setting Input (current temperature) Alarm (red) indicator Non-fail safe, Alarm (relay) output Fail safe, Alarm (relay) output
Output Latch Disabled
Power supply Hysteresis width: 2C
4
K8AB-TH
Nomenclature
Front Operations
Indicators
Item Power indicator (PWR) Alarm indicator (ALM) Lit: Power supply is ON. Flashing: SV protected. Lit: Relay is operating. Flashing: Sensor is disconnected or there is a Temperature Monitoring Relay error. (See note 1.). Usage
Power indicator (PWR): Green Alarm indicator (ALM): Red Output latch reset button
Operation Switches
Item Output latch reset button Alarm setting rotary switch Usage The output latch can be reset by pressing this button. (Enabled when latch is enabled.) (See note 2.) Set each digit of the alarm set temperature. K8AB-TH11S: x1, x10, x100 digits K8AB-TH12S: x10, x100, x1000 digits
Alarm setting rotary switch
TH11
Note: 1. The ALM indicator will flash and the relay outputs will turn ON if any of the following conditions occur. (1) The temperature input value exceeds the specified range. (2) The temperature set value exceeds the specified range. (3) There is an error in the internal circuits. 2. The SV protection will function when the latch reset button is pressed for at least 5 s. The power indicator will flash when the SV is protected. To release the protection, press the latch reset button again for at least 5 s.
Alarm Setting Rotary Switch
78
456
901
23
Turn the arrow in the direction of the number to set.
Function Setting DIP Switch
Function Default Upper-limit alarm Lower-limit alarm Enabled Disabled Non-fail safe Fail safe C F OFF OFF OFF Not used. --OFF OFF OFF OFF OFF
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
SW1 SW2 SW3 SW4 SW5
Alarm mode Output latch selector
OFF ON OFF ON
Operation selector: Non-fail safe/ OFF fail safe ON Temperature unit Input type selector OFF ON
Refer to the following table.
This DIP switch is provided on the side of the Temperature Monitoring Relay. (All switches are OFF for the default settings.)
OFF ON
SW6 SW7 SW8
K8AB-TH11S
Sensor type K SW5 SW6 SW7 OFF OFF OFF J OFF OFF ON ON OFF T OFF ON ON E OFF Pt100* ON OFF OFF Pt100* ON OFF ON Pt100* ON ON OFF Pt100* ON ON ON
* The type will be Pt100 for any of these settings.
K8AB-TH12S
Sensor type K SW5 SW6 SW7 OFF OFF OFF J OFF OFF ON ON OFF T OFF ON ON E OFF ON OFF OFF B ON OFF ON R ON ON OFF S PLII ON ON ON
5
K8AB-TH
Functions
SV Protection
This function protects (i.e., prohibits changing) the alarm setting, operating method, and modes for the Temperature Monitoring Relay that have been set on the rotary switches and DIP switch. The protection function is activated 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 for at least 5 s. The power indicator will flash when the protection is activated. 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 for at least 5 s. The power indicator will light while the protection is being reset.
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Temperature Monitoring Relay
K8AB-TH
Mounting Hole Dimensions
Two, M4 screws or two, 4-dia screws 22.5 100 5
102 90
5
Note: Pull out and use the hooks when mounting using screws.
Track Mounting Products (Sold Separately)
Mounting Track
PFP-100N PFP-50N
7.30.15 4.5 350.3 270.15
15
25
10
25
25
1000 (500) (See note.)
10
25
15 (5) (See note.)
1
Note: Dimensions in parentheses are for the PFP-50N.
Safety Precautions
Refer to Safety Precautions for All Temperature Controllers.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. In the interest of product improvement, specifications are subject to change without notice.
6
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products. At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use. The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products: * Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog. * Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations. * Systems, machines, and equipment that could present a risk to life or property. Please know and observe all prohibitions of use applicable to the products. NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.
2008.12 In the interest of product improvement, specifications are subject to change without notice.
Industrial Automation Company
http://www.ia.omron.com/
OMRON Corporation
(c)Copyright OMRON Corporation 2008 All Right Reserved.

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