Wavelength Electronics WTC3243 Manual
Text of the manual
WTC3293-14000 BOARD WITH DISPLAY
WTC3293-14400-A Rev E
www.teamwavelength.com
GENERAL DESCRIPTION:
Simply stable temperature control. Wire your
thermoelectric cooler and thermistor to the
board with the cable provided. Add the
appropriate DC power supply and indicate the
expected voltage on the jumper. With the
output disabled, adjust the on-boar
WTC3293-14000 BOARD WITH DISPLAY
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WTC3293-14400-A Rev E
The display is calibrated for a specifi c 10 kohm thermistor, the TCS610:
where T is in Kelvin; R is in ohms,
A = 1.1279E-3; B=2.3429E-4; C=8.7298E-8
Bias Current is also chosen for this thermistor: 100µA
Fuse: For safety, a 3A fuse is included on the board. Re
WTC3293-14000 BOARD WITH DISPLAY
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WTC3293-14400-A Rev E
STEP 1: SELECT POWER SUPPLY VOLTAGE and INSTALL JUMPER
This board has been designed to work with various thermoelectrics. The power supply voltage must
be tailored to the resistance of the thermoelectric to keep the WTC3243 intact. You need a power
supply voltag
WTC3293-14000 BOARD WITH DISPLAY
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WTC3293-14400-A Rev E
STEP 3: SELECT PROPORTIONAL GAIN AND INTEGRAL TIME CONSTANT
To optimize the control loop (minimize overshoot, settling time, avoid cycling, etc.) change the control
parameters as shown below. If the load doesn’t stabilize, contact the factory for troubleshooting
WTC3293-14000 BOARD WITH DISPLAY
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WTC3293-14400-A Rev E
OPERATING THE WTC3293-14000
STEP 6: ADJUST THE SETPOINT TEMPERATURE
The setpoint temperature can be adjusted from 10 to 65°C either by using the onboard 12-turn
potentiometer.
The VSET wire pads can be used as test points to monitor the potentiometer setting or for
