New Product Temperature Monitoring Relay K8DT-TH Ideal to prevent heater overheating. Self-latching output to contribute to safe equipment operation. Set the temperature with ultra-simple rotary switches. Digitally set the temperature to between 0 and 999C in 1C increments (K8DT-TH1 ). (K8DT-TH2 : Set to between 0 and 1,800C in 10C increments.) Connect a thermocouple or platinum resistance thermometer. Width of 17.5 mm to reduce space required in panels. Push-In Plus Technology that reduce wiring work. Double-insertion holes for crossover wiring (all terminals). For the most recent information on models UL listed for easy shipping to North America. that have been certified for safety standards, refer to your OMRON website. Models added with transistor outputs for superior contact reliability. Refer to Safety Precautions on page 8. Ordering Information Temperature Input Models Power supply Input types Setting units (setting range) Output types Model voltage Relay: SPDT contact output K8DT-TH1CD 24 V AC/DC Thermocouple or Transistor: Open collector K8DT-TH1TD Setting unit: 1C or 1F platinum resistance (0 to 999C/F) Relay: SPDT contact output K8DT-TH1CA thermometer 100-240 V AC Transistor: Open collector K8DT-TH1TA Relay: SPDT contact output K8DT-TH2CD 24 V AC/DC Transistor: Open collector K8DT-TH2TD Thermocouple Setting unit: 10C/F * Relay: SPDT contact output K8DT-TH2CA 100-240 V AC Transistor: Open collector K8DT-TH2TA * Refer to Setting Ranges on page 3 for the setting ranges. Options (Order Separately) Front Cover Appearance Model Y92A-D1A 1K8DT-TH Ratings and Specifications Ratings Specifications Power supply K8DT-TH D: 24 VAC 50/60 Hz or 24 VDC K8DT-TH1 : 1% of the setting range or 4 C, Measurement voltage K8DT-TH A: 100 to 240 VAC 50/60 Hz whichever is larger. accuracy K8DT-TH2 : 1% of the setting range (1%FS). Allowable voltage 85% to 110% of power supply voltage range Hysteresis width 2C Power 24 VAC or 24 VDC: 2.1 VA max. or 1.2 W max. Sampling cycle 100 ms consumption 100 to 240 VAC: 3.1 VA max. EN 61010-1 Approved Rated insulation Installation environment: 253 VAC standards voltage Overvoltage category II, pollution level 2 Applicable Thermocouple: K, J, T, E standards EMC EN 61326-1 * K8DT-TH1 Sensor Platinum-resistance thermometer: Pt100, Pt1000 Safety UL 61010-1 (Listing) inputs K8DT-TH2 Thermocouple: K, J, T, E, B, R, S, PL II standards Korean Radio Waves Act (Act 10564) Setting method Set of three rotary DIP switches 20 M min. Between all external terminals and the case Power (PWR): Green, Between all power supply terminals and all input Indicators Alarm (ALM): Red terminals Insulation resistance Between all power supply terminals and all output Relay: SPDT contact output Output form terminals Transistor: Open collector Between all input terminals and all output Rated load terminals 5 A at 250 VAC (Resistive load) 3,000 VAC for 1 min 5 A at 30 VDC (Resistive load) Between all external terminals and the case 1 A at 250 VAC (Inductive load) Between all power supply terminals and all input 0.2 A at 48 VDC (Inductive load) Output relay terminals Minimum load: 5 VDC, 10 mA (reference values) Dielectric strength ratings Between all power supply terminals and all output Mechanical life: 10 million operations min. terminals Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 Between all input terminals and all output operations terminals 3 A at 250 VAC/30 VDC: 100,000 operations Impulse withstand 6 kV (between live terminals and exposed, voltage non-charged metal parts) Contact form: SPST-NO (Open collector) Transistor output Rated voltage: 24 VDC (maximum voltage: 26.4 VDC) ratings Square-wave noise of 1 s/100 ns pulse width with Maximum current: 50 mA DC 1-ns rise time 100 to 240 VAC: 1,500 V power supply terminal Ambient operating 20 to 60C (with no condensation or icing) Noise immunity common/normal mode temperature 24 VAC: 1,500 V power supply terminal common/ Storage normal mode 25 to 65C (with no condensation or icing) temperature 24 VDC: 480 V power supply terminal common Ambient operating Vibration of 10 to 55 Hz with a 0.35-mm half 25% to 85% RH (with no condensation) humidity 2 Vibration resistance amplitude and acceleration of 50 m/s for 5 min with 10 sweeps each in X, Y, and Z directions Storage humidity 25% to 85% RH (with no condensation) 2 Shock resistance 100 m/s , 3 times each in 6 directions along 3 axes Altitude 2,000 m max. Degree of protection Terminals: IP20 Applicable wires Stranded wires, solid wires, or ferrules * Industrial Electromagnetic Environment (EN/IEC 61326-1, Table 2) Applicable wire 2 0.25 to 1.5 mm (AWG24 to AWG16) size Wire insertion force 8 N max. for AWG20 wire Screwdriver 15 N max. insertion force Wire stripping 8 mm length Ferrule length 8 mm Current capacity 10 A (per pole) Number of 50 times insertions Case color N1.5 Case material PC, UL 94 V-0 Weight Approx. 100 g Mounting Mounts to DIN Track, or screw mounting Dimensions 17.5 90 90 mm (WD H) 2