Protection Relays Single Function Relays and Controls TCR9C Temperature Controller 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 Wiring Diagram 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 V = Voltage JJ Solid-state output to control resistive heaters L = Load JJ External adjustment of the setpoint Caution: NTC Thermistor must JJ Small package, encapsulated, single-screw mounting be electrically insulated, 1500 JJ Metal mounting surface utilizes equipment as heat sink volts RMS minimum. R T Accessories Set Point Adjust 5 K P1015-13 (AWG 10/12), P1015-64 (AWG 14/16), NTC P1015-14 (AWG 18/22) Female Quick Connect Thermistor These 0.25 in. (6.35 mm) female terminals are constructed with an insulator barrel to provide Caution: NTC Thermistor must be strain relief. electrically insulated, 1500 volts RMS minimum. Specifications Control Output Type Single setpoint, negative temperature Type Solid state coefficient resistance sensing Form Non-isolated, single pole, zero voltage switching Sensor Type Thermistor, negative temperature coefficient Rating Model Steady State Inrush** (customer supplied) C 20A 200A** Electrically insulated for 1500V RMS min. Minimum Load Current 100mA Adjustment Temperature setpoint selected by means of Voltage Drop 2V at rated current an external resistance Off State Leakage Current 5mA 230VAC Accuracy 5% of the setpoint resistance Protection Add the tolerance of the NTC thermistor and Dielectric Breakdown 2000 volts terminals to mounting surface the drift of the adj. pot over temp. range Isolation Voltage 100m Setpoint vs. Ambient Circuitry Encapsulated Temperature and Mechanical Operating Voltage 5% of setpoint resistance Mounting Surface mount with one 10 (M5 x 0 .8) screw Reset Time 150ms Dimensions H 50.8 mm (2.0) W 50.8 mm (2.0) Input D 38.4 mm (1.51) Voltage 120 - 240VAC Termination 0.25 in. (6.35mm) male quick connect terminals Tolerance 15% Environmental AC Line Frequency 50/60 Hz Operating/Storage Temperature -40 to 60C / -40to 85C 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 90C. Inrush: non-repetitive for 16ms. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062716 wwwwww.littelfuse.com/tcr9c.littelfuse.com/Protection Relays Single Function Relays and Controls TCR9C Adjustment vs. Thermistor Resistance Function Diagram 20.0 18.0 16.0 14.0 Load ON 12.0 10.0 8.0 6.0 V = Voltage NTC = Negative Temperature 4.0 Load OFF L = Load Coeffiecient Thermistor 2.0 SP = Setpoint 0.0 1 2 3 4 5 6 7 8 9 10 RT (kOhms) Note: If RT value exceeds 13kOhms, the Note: If R value exceeds 13kOhms, the output will T output will not energize. not energize. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062716 wwwwww.littelfuse.com/tcr9c.littelfuse.com/ NTC (kOhms)