Wavelength Electronics HTC 4000 Manual Download Page 6

HTC4000 TEMPERA

TURE CONTROLLER

www.teamwavelength.com

© 2012

HTC4000-62400-B

PAGE 6

The HTC Series Temperature Controller is a linear 

controller designed for stable, low noise operation.  

We recommend using a regulated, linear supply 

for optimum performance.  Depending on your 

requirements, you may be able to use a switching 

power supply.  [A switching power supply will affect 

noise and stability.] 

The recommended operating voltage is b5 V 

and +12 V.  The voltage available to the thermoelectric 

is the “Compliance Voltage.”  Compliance voltage 

varies with the input voltage.

A heatsink is required to properly dissipate heat from 

the HTC mounting surface.  Maximum internal power 

dissipation is 17 Watts.

Special attention to grounding will ensure safe operation.  

Some  manufacturers  package  devices  with  one  lead 

of the sensor or thermoelectric connected to the metal 

enclosure or in the case of laser diodes, the laser 

anode or cathode.

WARNING:  Precautions should be taken not to 

earth ground pins 11, 12, or 13.  If any of these pins 

are earth grounded, then pins 5, 10, and 14 must be 

floating with respect to earth ground.

POWER SUPPLY AND NOISE

GROUNDING

Unless Earth and Instrument Ground are

connected via the power supply, Instrument Ground

is floating with respect to Earth Ground

Earth Ground on

USA 115 VAC wall socket

Common or

Instrument Ground

EARTH

DC POWER SUPPLY

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Summary of Contents for HTC 4000

Page 1: ...th the HTC and a built in sensor bias current source simplifies use with resistive temperature sensors The independently adjustable Proportional Gain P and Integrator Time Constant I can be modified t...

Page 2: ...l Jumper for Bipolar Operation RProp Gain RT Operate from single 5 V to 12 V power supply Measure Temperature Setpoint Actual Temperature Control Temperature Setpoint with resistor trimpot or external...

Page 3: ...tor Time Constant Setpoint vs Actual T Accuracy OUTPUT THERMOELECTRIC Current peak see SOA Chart Compliance Voltage Pin 11 to Pin 12 Temperature Range Current Limit Range 2 FS Accuracy Output Power co...

Page 4: ...ower Supply Ground Used with pin 9 for high current return TEC TEC supply current to the TE module With NTC sensors connect TEC to positive lead of TE module With PTC sensors connect TEC to positive l...

Page 5: ...the example SOA determination V 12 volts VLOAD 5 volts ILOAD 3 5 amp Follow these steps 1 Determine the maximum voltage drop across the controller V VLOAD and mark on the X axis 12 volts 5 volts 7 vo...

Page 6: ...s required to properly dissipate heat from the HTC mounting surface Maximum internal power dissipation is 17 Watts Special attention to grounding will ensure safe operation Some manufacturers package...

Page 7: ...BIAS BIAS Use a trimpot no more than twice the calculated value of RBIAS for best resolution RBIAS determines the bias current sourced to the sensor attached at pins 13 14 The chart indicates recomme...

Page 8: ...yester polypropylene some ceramic capacitors Capacitors with Dissipation Factors 1 typically electrolytic tantalum and ceramic will cause drift in the Integrator circuit To disable the integrator use...

Page 9: ...nd Setpoint monitors Integrator Time Constant Capacitor and Supply Voltage We recommend using a minimum of 22 AWG wire to the thermoelectric To Install the HTC on the HTCEVALPCB Evaluation Board with...

Page 10: ...be applied via the PWRPAK 5V input connector or the terminal block connections labeled V and GND USE ONLY ONE INPUT to supply power to the HTCEVALPCB POWER SWITCH This switch enables or disables the D...

Page 11: ...T POINT TEST POINT ACT T SET T P1 ALTECH AK500 12WP S4 C K 7101MD9ABE SW1 3 SW1 4 SW1 5 SW1 6 SW1 2 SW1 1 D2 4148 D1 4148 R10 10 k CW CCW RSET T 200K 12 TURN CW CW CCW W W W DISABLE ENABLE CCW RLIMIT...

Page 12: ...imp Terminal Housing 20 pin High Pressure only 6 pins shown 20 pin Molex Part Number 10 11 2203 L x W 2 02 x 51 51 3 mm x 12 9 mm Molex Crimp Terminal 7879 High Pressure for wire size 22 30 AWG Select...

Page 13: ...TEMPERATURE CONTROLLER 1 20 LIMIT 1 4 5 6 2 3 7 8 9 10 ON 10 90 33 62 DISABLE ENABLE SET T ACT T ON ON OFF INPUT 5 VDC CINT V COMMON MONITOR ACT T POWER CINT POWER SET T MONITOR SETPOINT INPUT GND TEC...

Page 14: ...side of the evaluation board and the mounting tabs are against the back side of the board 2 Line up the heatsink holes behind the HTC and insert the screws through the evaluation board and HTC unit i...

Page 15: ...ent Wavelength further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology to the extent allowed by that organization s calibr...

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