TCR9C

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Technical content

© 2016 Littelfuse Protection Relays & Controls Protection Relays Single Function Relays and Controls www.littelfuse.com/ Rev: 1-A-062716 www.littelfuse.com/tcr9c

Description

The TCR9C of solid-state temperature control is a low cost modular approach to accurate control of temperature. The high power output is available in 20 amperes and provides setpoint temperature control. The efficient mounting surface allows for utilization of equipment as the heat sink. Designed for use with resistive loads. Operation Setpoint Control: TCR9C is a single setpoint temperature controller. When the thermistor resistance is high (above the setpoint), the solid-state output is ON. When the thermistor resistance decreases (temperature increases) to setpoint or below, the output turns OFF . It must be recognized that temperature differential (under and overshoot) is largely due to the system as a whole. The mass of the system, size of the heaters and sensor all play an important part. Single setpoint control is best when there is little or no lag time between heater and sensor, and when the heater is not oversized. Features & Benefits JJ NTC thermistor sensing for low cost setpoint control JJ Solid-state output to control resistive heaters JJ External adjustment of the setpoint JJ Small package, encapsulated, single-screw mounting JJ Metal mounting surface utilizes equipment as heat sink Accessories P1015-13 (AWG 10/12), P1015-64 (AWG 14/16), P1015-14 (AWG 18/22) Female Quick Connect These 0.25 in. (6.35 mm) female terminals are constructed with an insulator barrel to provide strain relief. TCR9C Wiring Diagram Caution: NTC Thermistor must be electrically insulated, 1500 volts RMS minimum. NTC Thermistor RT Set Point Adjust 5 KΩ V = Voltage L = Load Caution: NTC Thermistor must be electrically insulated, 1500 volts RMS minimum. Specifications Control Type Single setpoint, negative temperature coefficient resistance sensing Sensor Type Thermistor, negative temperature coefficient (customer supplied) Electrically insulated for 1500V RMS min. Adjustment Temperature setpoint selected by means of an external resistance Accuracy ≤ ±5% of the setpoint resistance Add the tolerance of the NTC thermistor and the drift of the adj. pot over temp. range Setpoint vs. Ambient Temperature and Operating Voltage ±5% of setpoint resistance Reset Time ≤ 150ms Input Voltage 120 - 240VAC Tolerance ±15% AC Line Frequency 50/60 Hz Output Type Solid state Form Non-isolated, single pole, zero voltage switching Rating Model Steady State Inrush C 20A 200A Minimum Load Current 100mA Voltage Drop ≅ 2V at rated current Off State Leakage Current ≅ 5mA @ 230VAC Protection Dielectric Breakdown ≥2000 volts terminals to mounting surface Isolation Voltage ≥100mΩ Circuitry Encapsulated Mechanical Mounting Surface mount with one #10 (M5 x 0 .8) screw Dimensions H 50.8 mm (2.0”); W 50.8 mm (2.0”); D 38.4 mm (1.51”) Termination 0.25 in. (6.35mm) male quick connect terminals Environmental Operating/Storage Temperature -40° to 60°C / -40°to 85°C Humidity 95% relative, non-condensing Weight ≅ 2 .7 oz (77 g) ** Must be bolted to a metal surface using the included heat sink compound. The maximum mounting surface temperature is 90°C. Inrush: non-repetitive for 16ms. Temperature Controller

© 2016 Littelfuse Protection Relays & Controls Protection Relays Single Function Relays and Controls www.littelfuse.com/ Rev: 1-A-062716 www.littelfuse.com/tcr9c TCR9C V = Voltage L = Load SP = Setpoint NTC = Negative Temperature Coeffiecient Thermistor Function Diagram 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 1 2 3 4 5 6 7 8 9 10 RT (kOhms) NTC (kOhms) Load ON Load OFF Note: If R T value exceeds 13kOhms, the output will not energize. Adjustment vs. Thermistor Resistance Note: If RT value exceeds 13kOhms, the output will not energize.