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 × 2.5 mm2 solid wire or 2 × 1.5 mm2 wiring ferrules. Third-party Certification of CE Mark Compliance, Certified UL Standard Compliance, and Certified TÜV and SUD Standard Compliance Model Number Structure ■ Model Number Legend K8AB-TH1@@ 1 2 3 4 1. Basic Model K8AB: Measuring and Monitoring Relay 2. Function TH1: Temperature Monitoring Relay 3. Setting Range 1: Low-temperature range (0 to 399°C: setting in increments of 1°C) 2: High-temperature range (0 to 1700°C max.: setting in increments of 10°C) 4. Output Form S: One SPDT relay output Ordering Information ■ List of Models Size Supply voltage Type K8AB-TH 100 to 240 VAC Temperature 22.5 × 90 × 100 mm input 24 VAC/VDC Number of outputs 1 (relay) Input type Setting unit (setting range) Thermocouple/Pt100 Unit: 1°C/°F (0 to 399°C/°F) Thermocouple Unit: 10°C/°F (See note 1.) Model K8AB-TH11S K8AB-TH12S Thermocouple/Pt100 Unit: 1°C/°F (0 to 399°C/°F) K8AB-TH11S Thermocouple K8AB-TH12S Unit: 10°C/°F (See note 1.) 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 Power supply voltage 100 to 240 VAC 50/60 Hz Allowable voltage range 85% to 110% of power supply voltage Power consumption 5 VA max. Sensor inputs 24 VAC 50/60 Hz or 24 VDC 2 W max. (24 VDC), 4 VA max. (24 VAC) K8AB-TH11S Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100 K8AB-TH12S Thermocouple: K, J, T, E, B, R, S, PLII Contact input ON: 1 kΩ max., OFF: 100 kΩ min. Non-contact input ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max. Output relay One SPDT relay (3 A at 250 VAC, resistive load) External inputs (for latch setting) Leakage current: Approx. 10 mA Setting method Rotary switch setting (set of three switches) Indicators Power (PWR): Green LED, Relay output (ALM): Red LED Other functions Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output latch, setting protection, temperature unit °C/°F Ambient operating temperature −10 to 55°C (with no condensation or icing) Ambient operating humidity Relative humidity: 25% to 85% Storage temperature −25 to 65°C (with no condensation or icing) ■ Characteristics Setting accuracy ±2.0% of full scale hysteresis width 2°C Output relay Resistive load 3 A at 250 VAC (cosφ = 1), 3 A at 30 VDC (L/R = 0 ms) Inductive load 1 A at 250 VAC (cosφ = 0.4), 1 A at 30 VDC (L/R = 7 ms) Minimum load 10 mA at 5 VDC Maximum contact voltage 250 VAC Maximum contact current 3 A AC Maximum switching capacity 1,500 VA Mechanical life 10,000,000 operations Electrical life Make: 50,000 times, Break: 30,000 times Sampling cycle 500 ms Insulation resistance 20 MΩ (at 500 V) between charged terminals and exposed uncharged parts 20 MΩ (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals) 20 MΩ (at 500 V) between contacts (open) Dielectric strength 2,000 VAC 50/60 Hz for 1 min between charged terminals of different polarity Vibration resistance 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 Shock resistance 150 m/s2 (100 m/s2 for relay contacts) 3 times each in 6 directions in X, Y, and Z directions Weight 130 g Degree of protection IP20 Memory protection Non-volatile memory (number or writes: 200,000) Safety Standards Approved standards EN 61010-1 EMC EN 61326 Application standards EN 61010-1 (pollution level 2, overvoltage category II) EMC EMI: Radiation Interference Field Intensity: Noise Terminal Voltage: EMS: Immunity ESD: Immunity RF: Immunity Burst: Immunity Conducted Disturbance: Immunity Surge: Commercial Frequency Immunity Magnetic Field: Immunity Voltage Dip/Interrupting: Terminal screw tightening torque 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) 0.54 to 0.55 N·m Crimp terminals Two solid wires of 2.5 mm2 or two ferrules of 1.5 mm2 with insulation sleeves can be tightened together. Case color Munsell 5Y8/1 (ivory) Case material ABS resin (self-extinguishing resin) Mounting Mounted to DIN Track or with M4 screws Dimensions 22.5 × 100 × 90 mm (W × D × H) 2 K8AB-TH ■ Setting Ranges K8AB-TH11S Centigrade Input Setting temperature range 500 400 300 200 100 0 K J T E Pt100 399 399 399 399 399 0 0 0 0 0 Minimum setting increment 1°C Fahrenheit Input 500 400 300 200 100 0 Setting temperature range K J T E Pt100 399 399 399 399 399 0 0 0 0 0 Minimum setting increment 1°F K8AB-TH12S Centigrade Input Setting temperature range 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 R S 1,700 1,700 PLII 1,800 1,300 1,300 850 600 400 100 0 0 0 0 Minimum setting increment 0 0 0 R S PLII 3,000 3,000 10°C Fahrenheit Input 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 1,100 1,000 900 800 700 600 500 400 300 200 100 0 Minimum setting increment K J T E B 3,200 2,300 2,300 1,500 1,100 700 300 0 0 0 0 0 0 0 10°F 3 K8AB-TH Connections ■ Wiring Diagrams K8AB-TH11S K8AB-TH12S Power supply voltage (See note 1.) A1 A2 Power supply 14 11 12 Relay output Power supply Relay output Power supply voltage (See note 1.) External input (LATCH_RST) (See note 2.) 4 5 6 1 2 3 Thermocouple B B A Sensor input Not used. External input (LATCH_RST) (See note 2.) Sensor input A1 A2 14 11 12 4 5 6 Not used. 1 2 3 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 Platinum resistance thermometer ■ Operation (Using the Upper-limit Alarm Mode) Output Latch Enabled (Default Setting: Latch Enabled) Power supply Output Latch Disabled Power supply Hysteresis width: 2°C Alarm setting Input (current temperature) Alarm (red) indicator Latch reset (See note.) Non-fail safe, Alarm (relay) output Fail safe, Alarm (relay) output Hysteresis width: 2°C Alarm setting Input (current temperature) Alarm (red) indicator 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. 4 K8AB-TH Nomenclature ■ Front Operations Indicators Item Usage Power indicator (PWR) Lit: Power supply is ON. Flashing: SV protected. Alarm indicator (ALM) Lit: Relay is operating. Flashing: Sensor is disconnected or there is a Temperature Monitoring Relay error. (See note 1.). Operation Switches Power indicator (PWR): Green Alarm indicator (ALM): Red Output latch reset button Item Alarm setting rotary switch Usage Output latch reset button The output latch can be reset by pressing this button. (Enabled when latch is enabled.) (See note 2.) Alarm setting rotary switch Set each digit of the alarm set temperature. K8AB-TH11S: x1, x10, x100 digits K8AB-TH12S: x10, x100, x1000 digits 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. TH11 Alarm Setting Rotary Switch 901 456 78 Turn the arrow in the direction of the number to set. 23 ■ Function Setting DIP Switch Function SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8 SW1 Alarm mode SW2 Output latch selector SW3 SW4 SW5 This DIP switch is provided on the side of the Temperature Monitoring Relay. (All switches are OFF for the default settings.) OFF ON Default OFF Upper-limit alarm ON Lower-limit alarm OFF Enabled ON Disabled OFF Operation selector: Non-fail safe/ OFF fail safe ON Non-fail safe Temperature unit OFF °C ON °F Input type selector OFF OFF Fail safe OFF Refer to the following table. OFF SW6 OFF SW7 SW8 OFF Not used. --- OFF K8AB-TH11S Sensor type K J T E SW5 OFF OFF OFF OFF SW6 OFF OFF ON ON SW7 OFF ON OFF ON Pt100* ON Pt100* Pt100* Pt100* ON ON ON OFF OFF ON ON OFF ON OFF ON * The type will be Pt100 for any of these settings. K8AB-TH12S Sensor type K J T E SW5 OFF OFF OFF OFF SW6 OFF OFF ON ON SW7 OFF ON OFF ON B ON R S PLII ON ON ON OFF OFF ON ON OFF ON OFF 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 5 100 102 90 5 Note: Pull out and use the hooks when mounting using screws. ■ Track Mounting Products (Sold Separately) Mounting Track PFP-100N PFP-50N 7.3±0.15 4.5 35±0.3 15 25 10 25 25 1000 (500) (See note.) 10 25 15 (5) (See note.) 27±0.15 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. OMRON Corporation Industrial Automation Company http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2008 All Right Reserved.