Q Series TC-18-QE-50 A Temperature Controller The Q Series thermostatic controller is a microcontroller-based device that can be incorporated into a thermoelectric cooler assembly to add integrated temperature control. This controller functions as a cooling control device and features an adjustable temperature set point range from 30C to 40C. The Q Series controller provides a single directional temperature control for standard or custom thermostatic control with several input and output options. Custom configurations are available, however MOQ applies. FEATURES BENEFITS Operation in cooling mode The controllers temperature Regulation mode is ON/OFF at set point can be adjusted with the programmed set point and an internal potentiometer in hysteresis the internal range of 30C to Input power range can 40C accommodate 11 to 58 VDC, Tachometer sensor inputs nominally 12 to 48 VDC provided to measure the Outputs are available for fan, speed of two fans. Feature thermoelectric module, NTC sold on custom configurations only thermistor, tachometer sensor, overheating thermostat switch, Overheating thermostat alarm, and LED. Some features switch input available to sold on custom configurations sense an over temperature only condition and will turn off power to the thermoelectric cooler assembly. A APPLICATIONS thermostat is required for Medical diagnostics operation Analytical instrumentation Alarm and LED outputs Photonics laser systems available to indicate Electronic enclosure cooling functional status of controller Chillrs (liquid cooling) TECHNICAL SPECIFICATIONS Power Voltage 11 to 58 VDC Current 8 A without added cooling / 16 A with added cooling Power 786 W 48 VDC Max, 384 W 24 VDC Max, 192 W 12 VDC Max User Interface Onboard Potentiometer Sensors Temp Sensor NTC Thermistor 1 Fan Tachometer 1 Use with fans w/ an open collector tachometer Fan Tachometer 2 Use with fans w/ an open collector tachometer Outputs Thermoelectric Module Supply voltage 16 A Fan 1 Supply voltage 2 A Fan 2 Supply voltage 2 A Alarm Relay Open collector, Opto-isolated Overheating Thermostat Overheating protection LED Status/Errors TC-18-QE-50 Temperature Controller Alarms Low Voltage If voltage is lower than programmed minimum level the outputs are shut down after a programmed time High Voltage Outputs are shut down instantly Tachometer 1 & 2* If the RPM signal is lower than the programmed minimum level, error is indicated. Max Voltage VCEO = 35V, VECO = 6V Max Current Ic = 50 mA Note: All programming of parameters is conducted by Laird Thermal Systems Temperature Regulation ON/OFF mode Controller switches the thermoelectric cooler output between full power and zero power at the programmed set point and hysteresis Programmed Control Set Point Cooling at 35C, Off at 32C Trim Range 5C Accuracy 1C Protection Over and under voltage Reverse polarity *Feature sold on custom units only. INSTRUCTIONS Connection instruction and functional overview Power: DC voltage input. Polarity protected OHT: If an overheating thermostat is used, it shall be connected here. If no OHT is used, the OHT outputs must be jumpered with a wire. Note that the OHT and wires must be able to carry the TEM current. TEM: Output to thermoelectric cooler modules (TEM). Output is turned on when power voltage is within operating range and sensor temperature is higher then set temperature. Maximum output current is 16A when controller is cooled and 8A without cooling. Current must not be exceeded. Example of cooling is when the controller is mounted on a heat sink. Fan1: Mainly intended to be used on the internal, cooled, side of a thermoelectric assembly TEA. It is on when power voltage is within operating range. Output current is 2A and must not be exceeded. Fan 2: Mainly intended to be used on the external, warm side of a TEA. It has one output for positive and two outputs for negative. Choose which negative output to use depending on if Fan 2 shall have the same functionality as Fan 1 or as the TEM s. Note that Fan 2 current is added to Fan 1 or TEM s, depending on the choice. Tacho inputs: Not activated. Temp sensor: Temperature sensor. Temperature setting is changed with the on board trim potentiometer.