Temperature Monitoring Relay K8AB-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. Simple function settings using DIP switch. Multi-input support for thermocouple or Pt100 sensor input. Selectable output relay: Non-fail safe/fail safe. Alarm status identification with LED indicator. CE Marking UL/CSA certification pending. Features This Temperature Monitoring Relay was designed specially for Selecting Functions and Modes monitoring abnormal temperatures to prevent excessive The following settings are provided: alarm mode (upper limit/lower temperature increase and to protect equipment. limit), enable/disable latch, C/F, relay output non-fail safe/fail safe, A relay capacity of 3 A at 250 VAC (resistive load) is provided. setting protection. An output latch function is also supported. Terminal Wiring with Ferrules Settings can be made and functions can be selected using the DIP 2 2 Wire with 2 2.5 mm solid wire or 2 1.5 mm wiring ferrules. switch. Reduce the number of models by using multi-input support for thermocouple or Pt100 sensor input. Model Number Structure Model Number Legend K8AB-TH1 12 34 1. Basic Model 3. Setting Range K8AB: Measuring and Monitoring Relay 1: Low-temperature range (0 to 399C: setting in increments of 1C) 2. Function 2: High-temperature range (0 to 1800C max.: setting in TH1: Temperature Monitoring Relay increments of 10C) 4. Output Form S: One SPDT relay output Ordering Information List of Models Temperature Monitoring Relay Input type Temperature Setting unit Supply voltage Model setting range Thermocouple/ 0 to 399C/F1C/F 100 to 240 VAC K8AB-TH11S 100-240VAC Pt100 24 VAC/VDC K8AB-TH11S 24VAC/VDC Thermocouple 0 to 1,700C 10C/F (See note.) 100 to 240 VAC K8AB-TH12S 100-240VAC 0 to 3,200F 24 VAC/VDC K8AB-TH12S 24VAC/VDC Note: Refer to page 3 for setting ranges. Temperature Monitoring Relay K8AB-TH 1Specifications Ratings Item Power supply voltage 100 to 240 VAC 50/60 Hz 24 VAC 50/60 Hz or 24 VDC Allowable voltage range 85% to 110% of power supply voltage Power consumption 5 VA max. 2 W max. (24 VDC), 4 VA max. (24 VAC) Sensor inputs K8AB-TH11S Thermocouple: K, J, T, E Platinum-resistance thermometer: Pt100 K8AB-TH12S Thermocouple: K, J, T, E, B, R, S, PLII Output relay One SPDT relay (3 A at 250 VAC, resistive load) External inputs Contact input ON: 1 k max., OFF: 100 k min. (for latch setting) Non-contact input ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max. 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 55C (with no condensation or icing) Ambient operating humidity Relative humidity: 25% to 85% Storage temperature 25 to 65C (with no condensation or icing) Characteristics Setting accuracy 2.0% of full scale hysteresis width 2C Output relay Resistive load 3 A at 250 VAC (cos = 1), 3 A at 30 VDC (L/R = 0 ms) Inductive load 1 A at 250 VAC (cos = 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 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) Dielectric strength 2,000 VAC 50/60 Hz for 1 min between charged terminals of different polarity 2 Vibration resistance Vibration of 10 to 55 Hz and acceleration of 50 m/s for 5 min with 10 sweeps each in X, Y, and Z directions 2 2 Shock resistance 150 m/s (100 m/s 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 Approved standards EN 61010-1 Standards Application standards EN 61326 and EN 61010-1 (pollution level 2, overvoltage category II) EMC EMI: EN 61326 Radiation Interference Field Intensity: EN 55011 Group 1 Class A Noise Terminal Voltage: EN 55011 Group 1 Class A EMS: EN 61326 Immunity ESD: EN 61000-4-2: 4 kV contact discharge (level 2) 8 kV air discharge (level 3) Immunity RF: EN 61000-4-3: 10 V/m, amplitude-modulated (80 MHz to 1 GHz, 1.4 GHz to 2 GHz) (level 3) Immunity Burst: 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) Immunity Conducted Disturbance: EN 61000-4-6: 3 V (0.15 to 80 MHz) (level 3) Immunity Surge: 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) Commercial Frequency Immunity Magnetic Field: EN 61000-4-8: 30 A/m (50Hz) continuous time Immunity Voltage Dip/Interrupting: EN 61000-4-11: 0.5 cycle, 100% (rated voltage) Terminal screw tightening torque 0.54 to 0.55 Nm 2 2 Crimp terminals Two solid wires of 2.5 mm or two ferrules of 1.5 mm 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 Temperature Monitoring Relay K8AB-TH