Wavelength Electronics WTC32ND Скачать руководство пользователя страница 35

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WTC32ND TEMPERATURE CONTROLLER

MECHANICAL SPECIFICATIONS, continued

1.880 [47.75]

2.25 [57.15]

0.19 [4.83]

1.880

[47.75]

[57.15]

2.25

0.19 [4.83]

0.17 [4.32]

2.42 [61.47]

0.13[3.3] THRU

4 PLS

0.44

[11.18]

1.56

[39.62]

2.25

[57.15]

0.63

[16.00]

All dimensions are inches [mm]. All tolerances are ±5%.

Direction for

Recommended

Airflow

Weights

WTC32ND-EV + WTC32ND

1.6 oz

WHS302 Heatsink

0.5 oz

WXC303/4 Fan

0.3 oz

T h e W T C 3 2 N D c o n n e c t s t o t h e

evaluation board by two 7-pin SIP

sockets. The socket manufacturer is

Sullins, PPPC071LFBN-RC Socket.

Содержание WTC32ND

Страница 1: ...s safety feature guarantees that your thermoelectric cooler will never be driven beyond your specified limits LEADING EDGE APPLICATIONS The robust and reliable WTC32ND has been designed into electro o...

Страница 2: ...will be operating within the internal heat dissipation Safe Operating Area SOA Visit the Wavelength Electronics website for the most accurate up to date and easy to use SOA calculator www teamwaveleng...

Страница 3: ...ge 25 Control Parameters PGAIN Table 5 on page 14 Equation 1 RP Table 11 on page 27 I TERM Table 5 on page 14 Equation 3 RI Table 12 on page 27 Bias Current Sensor Bias Switch Table 4 on page 13 Figur...

Страница 4: ...P Gain Remove R8 and load R54 I TERM To set a Fixed I Term Remove R13 and load R55 TP7 TP4 TP3 TP5 CW W CCW R5 200K TP6 C5 0 1UF C6 0 1UF R50 N L R51 N L Set T To set a Fixed Set point Voltage Remove...

Страница 5: ...peration requires that VDD be 8 V or greater 10 BIAS Sensor Bias Current Resistor Connection Connect a resistor between BIAS Pin 10 and VDD Pin 1 to configure the sensor bias current 11 OUTA Thermoele...

Страница 6: ...pply input for output stage Directly connected to WTC32ND VS Pin 14 PGND Power Ground Directly connected to WTC32ND GND Pin13 Terminal Block 2 TB2 Auxiliary Terminal Block FAN Fan Positive Red wire co...

Страница 7: ...RSET to Sensor Voltage 1 V V The controller drives the TEC or heater to make the voltage across the sensor match the RSET voltage SET T Monitor to VSET 1 V V The setpoint temperature monitor voltage m...

Страница 8: ...VS 1 0 Volts Full temp range IOUT 2 2 A Short Term Stability 1 hour 0 0009 C OFF ambient temperature TSET 25 C using 10 k thermistor 1 Short Term Stability 1 hour 0 002 C ON ambient temperature TSET...

Страница 9: ...e the tolerance of the bias current resistor THERMAL Heatspreader Temperature Rise 28 to 33 C W TAMBIENT 25 C Heatspreader Temperature Rise 18 to 25 C W With WHS302 Heatsink WTW002 Thermal Washer Heat...

Страница 10: ...output voltage range 0 6 5 VSET X 0 2 5 VSET T Volts X is the external setpoint jumper T is the internal trimpot jumper ACT T MON output voltage range 0 to VDD Volts Limited by bias current circuit 1...

Страница 11: ...perature by driving a current through the temperature sensor and measuring the voltage drop across it It may be useful to remember that you do not directly adjust the setpoint temperature Rather you a...

Страница 12: ...c operation WTC32ND Temperature Controller WTC32ND EV PCB evaluation board Digital multimeter 4 digit resolution recommended Thermistor or other temperature sensor Peltier type thermoelectric module o...

Страница 13: ...ET is Source Trimpot is Source Factory Default Figure 7 VSET Source Jumper Settings SET THE SENSOR BIAS SWITCH Use Table 4 to configure the evaluation board for your temperature sensor type Sensor sig...

Страница 14: ...not match the table if the WTC32ND is installed P GAIN I TERM Figure 10 Location of the P GAIN and I TERM Trimpots Table 5 suggests starting points for P GAIN and I TERM depending on your sensor type...

Страница 15: ...uation 4 Calculating ITC from RI ITC 0 53 100 000 1 Seconds RI Where RI is in Ohms ITC is in seconds INSTALL THE WTC32ND ON THE WTC32ND EV EVALUATION BOARD The notch at the top of the WTC32ND must be...

Страница 16: ...ted on the WTC so the location of the wires matches your PCB Screw 4 40 PHPH x 0 75 w o FAN x 1 with FAN 30 mm FAN WXC303 5 VDC or WXC304 12 VDC WHS302 Heatsink WTW002 Thermal Washer WTC32ND Heat Spre...

Страница 17: ...power jack is attached to VDD You can use the Wavelength PWRPAK power supplies with this jack Use either the power jack or the power inputs on TB1 not both The COMMON COM terminal on the WTC32ND EV i...

Страница 18: ...tion directly to Pin 13 GND to avoid parasitic resistances and voltages affecting temperature stability and accuracy Connect thermistors and RTD sensors which are not polarized to SEN and SEN on Termi...

Страница 19: ...mpot can be adjusted from 0 V to 5 V To get above 4 5 V increase VDD to a minimum of 5 5 V To read the actual temperature and setpoint temperature of the device the power needs to be connected NOTE If...

Страница 20: ...ts are included in this datasheet for quick reference but we recommend you use the online tools instead Refer to the SOA calculator for the WTC32ND www teamwavelength com support design tools soa tc c...

Страница 21: ...in 1 on the WHY is reversed or mirrored relative to the position of Pin 1 on the WTC32ND VS VDD TIE GROUND CONNECTIONS DIRECTLY TO PIN 13 1 WTC32ND Temperature Controller 1 2 3 4 5 6 7 14 13 12 11 10...

Страница 22: ...al Temperature Monitor voltage VDD RT RTD RBIAS RI RP RLIMA RLIMB RG Adjusting PI Control Loop Adjusting Limit Currents VSET VSET Sensor Resistance X Sensor Bias Current X 10 for 100 RTDs 1 1 1 NOTE R...

Страница 23: ...Y SERIES The position of Pin 1 on the WHY is reversed or mirrored relative to the position of Pin 1 on the WTC32ND TOP VIEW VS VDD TIE GROUND CONNECTIONS DIRECTLY TO PIN 13 1 WTC32ND Temperature Contr...

Страница 24: ...or mirrored relative to the position of Pin 1 on the WTC32ND TOP VIEW VS VDD TIE GROUND CONNECTIONS DIRECTLY TO PIN 13 1 WTC32ND Temperature Controller 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Actual Temperat...

Страница 25: ...Figure 25 shows fixed heating and cooling limits and is the standard implementation Figure 25 Fixed Heat and Cool Current Limits Figure 26 diagrams setting current limits independently using trimpots...

Страница 26: ...or values for RBIAS and RG for various sensors and resistance values Equation 7 demonstrates how to calculate a value of RBIAS given a desired sensor bias current IBIAS Equation 7 Calculating RBIAS RB...

Страница 27: ...ion 10 Calculating PGAIN from RP PGAIN 100 A V 100 000 1 RP SET THE CONTROL LOOP INTEGRATOR TIME CONSTANT To set the control loop Integrator Time Constant ITC insert a resistor RI between 1V Pin 6 and...

Страница 28: ...to the pin marked COM Do not use less than 2 k resistance or the 2 5 V will droop FAN REN HSET COM W CW CCW 2 5 V TB2 SET T ACT T LIMA LIMB COM RSET TB3 Figure 28 Example Wiring External RSET Adjustme...

Страница 29: ...ND installed Measure the PGAIN trimpot value across pins TP5 TP6 Remove resistor P2 Load P1 with a resistor of the value measured 1206 size BOTTOM VIEW RESISTOR LOCATIONS TOP VIEW TEST POINT LOCATIONS...

Страница 30: ...LB2 and LB1 and TP4 TP1 respectively TOP VIEW TEST POINT LOCATIONS BOTTOM VIEW RESISTOR LOCATIONS Figure 32 LIMA LIMB Settings CHANGING ONBOARD SETPOINT TRIMPOT TO A FIXED RESISTANCE Connect an ohmme...

Страница 31: ...ller VDROP VS VMAX VS is the power supply voltage Mark VDROP on the X axis and extend a line upward Mark IMAX on the Y axis and extend a line to the right until it intersects the VDROP line On the X a...

Страница 32: ...the thermal load Use thermal paste or washers between the load TEC and the TEC heatsink interfaces Ensure the temperature sensor is in good thermal contact with the load Unit may be operating outside...

Страница 33: ...se the current limit but DO NOT exceed the specifications of the TEC or heater The WTC32ND EV is not producing current The P GAIN or I TERM may be turned all the way counter clockwise CCW Turn the P G...

Страница 34: ...3 0 0 20 5 1 1 26 32 0 0 33 1 28 32 5 0 945 24 00 0 945 24 00 2 PLS 4 40 UNC WTC32ND 0 125 3 18 Thru 0 25 6 4 DIA KEEPOUT 4 Required 0 038 0 97 Dia Thru Hole 0 060 1 52 Dia Pad 14 Required 0 023 0 58...

Страница 35: ...7 4 32 2 42 61 47 0 13 3 3 THRU 4 PLS 0 44 11 18 1 56 39 62 2 25 57 15 0 63 16 00 All dimensions are inches mm All tolerances are 5 Direction for Recommended Airflow Weights WTC32ND EV WTC32ND1 6 oz W...

Страница 36: ...UE PGND 2 ORANGE VS 3 RED VDD 4 BLACK COM 5 WHITE VM1 6 GREEN VM2 CABLING SPECIFICATIONS These cables are included with the WTC32ND EV Evaluation Board WTC3293 00101 INPUT CABLE MOLEX 43645 0400 MICRO...

Страница 37: ...ENGINEERING PROHIBITED Buyer End User or Third Party Reseller are expressly prohibited from reverse engineering decompiling or disassembling this product NOTICE The information contained in this docum...

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