Overview

The Model 5C7-350 Series controllers are general purpose, low cost, open board temperature controllers especially designed to operate with thermoelectric (Peltier effect, or TEC) modules. They use a TS67 Series temperature sensor for a temperature range of -20°C to 100°C. There is also a Model 5C7-347 Series that is similar to the Model 5C7-350 Series temperature controller but uses a TS104 Series temperature sensor for a temperature range of 0°C to 120°C.

These controllers are compatible with peltier modules, resistive heaters, fans, and many other DC voltage devices that proportionately alter operation based on the amount of power supplied. 

Most peltier modules may be operated in either a cooling mode or a heating mode depending on current direction. The 5C7-350 Series may be field configured for either of these operating modes.

These controllers were designed with a proportional / integral control algorithm to provide the best control at the most economical cost. Either a fixed or adjustable proportional bandwidth and integral rate permits optimizing individual thermal systems.

The controllers are capable of providing up to 7.5 amperes of current for modules rated at 12 through 24 volts DC with a mounting plate temperature of 25°C. Additional external heat sinking will permit operating load currents in excess of 10 amperes. The actual controller remains functional over an input voltage range of 9 to 24 volts DC.

Mechanical Specifications

Options and Customization

The controllers are available in both an open board construction or encapsulated on a mounting plate. for the type of adjustments offered (top, side, access, remote), various configuration options are available: packaging, available custom temperature ranges, and dial scale.

Options

For a small but intelligent TEC controller with either heat only or automatic bi-phase heat and cool, consider a customized version of a 5R7-001 Series controller. For an NRE, we can provide custom, PC compatible controllers with a much smaller footprint than our standard controllers. Interfaces include RS485, RS232, and I2C. The interface is used to set up the controller or to monitor the temperature. Otherwise, a configured controller can run standalone.

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• LOAD: Compatible with Thermoelectric (Peltier effect, or TEC) modules, resistive heaters, fans, and many other DC voltage devices that proportionately alter operation based on the amount of power supplied.
• STABILITY: The controller itself has an internal resolution of approximately 0.5°C, and that means the best attainable stability is between 0.5°C and 1°C.  Many of our customers attain their desired stability with the off-the-shelf, low cost, general purpose controller, and are using it in production. Stability is intimately related to your thermal system. If you are not seeing the stability your application requires, we can, for an NRE, build a custom unit. We have many ways to adapt this controller to your requirements and to the specific parameters of your thermal system.
• OUTPUT 
• Uniphase: Single mode operation for either HEATING or COOLING applications switched by jumper (you could also use an external switch or relay).
• PWM: Pulse width modulated output with a base frequency of 400 Hz
• Proportional / Integral Control Algorithm
• Proportional Bandwidth: Adjustable or fixed proportional bandwidth of 0.5°C to 5°C using an on board potentiometer.
• Integral Gain: Adjustable or fixed integral rate of 0 to 2.55 repeats per minute (also known as "sample rate".) using an on board potentiometer
• Power
• Using Single Output Power Supply: Rated for up to 7.5 amps at 12 to 24 volts DC with a 25°C. mounting plate temperature. (Controller will operate down to 9 volts DC. Request more information.)
• Using Dual Output Power Supply (or 2 supplies): Less than 500 ma at 12 to 24 vdc is needed for the control circuit.  (Controller will operate down to 9 volts DC. Request more information.) Power supply for the load can be 3 to 24 vdc and maximum of 7.5 amps. Application Note
• Current Limiting: 14 amps maximum.
• Thermal Shutdown: Output device has linear current limiting to 14 amps maximum. with built-in thermal shutdown
• Reverse Polarity: Output device has reverse polarity protection.
• TEMPERATURE
• Range of 5C7-350 & 5C7-350A: -20°C. to 100°C. Using a TS67 Series temperature sensor
• Range of 5C7-347 & 5C7-347A: 0°C. to 120°C. Using a TS104 Series temperature sensor
• Adjustment:  The 5C7-350 has an on board potentiometer. The 5C7-350A has a potentiometer/dial combination.
• Operation
• Ambient Operating Temperature
•  Down to -20C for off-the-shelf controllers. Notes on Ambient Operating Temperature
• 
• Connections: via 0.250 quick connect (quick-disconnect) terminals
• Dimensions:  Mechanical Specifications
• Production Models: Once the controller is configured for your application we provide services that can lower the cost and simplify configuration, production, and distribution.

Full featured / Low Cost.

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Implementation Notes

Options
Mechanical Specifications

For general information about power supplies see our Library page Power Supply Notes.

MULTIPLE SET POINTS: Since the temperature is set using a potentiometer, and the heat and cool mode is determined by a jumper, it is relatively easy to make a circuit that allows you to easily switch between two or more temperature settings. Here is an example of a circuit for switching between two temperatures where the heat or cool mode does not need to be changed: ...
Circuit for 5C7-350A with 2 Temperature Settings.

FOR FIBER OPTIC COMPONENTS AND LASER DIODES... Note.
 

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Pricing

Note: Prices shown are for the controllers only.  Sensors, TE modules and power supplies may be available but are not included in the controller pricing.

Lead Time: The 5C7-350 and 5C7-350A are generally in stock and can be shipped in 2 to 4 days ARO. The other controllers are not generally maintained in volume in stock. Out of stock items may have a 1 to 4 week lead time.

SENSOR PRICING
Click here for TS67 Series Sensor Housings and Prices (-20°C to 100°C Range)
Click here for TS104 Series Sensor Housings and Prices (0°C to 120°C Range)

Model 5C7-350 (-20°C to 100°C usingTS67 Series Sensors)
Model 5C7-347 (0°C to 120°C usingTS104 Series Sensors)
   Quantity 01 price:  $48.00 each
   Quantity 10 price:  $45.00 each
   Lower prices are available at higher volume.
   Quantity 1000 price: $29.50 each

Model 5C7-350A (-20°C to 100°C usingTS67 Series Sensors)
Model 5C7-347A (0°C to 120°C usingTS104 Series Sensors)
Kit includes controller, cable, knob, potentiometer and Celsius dial decal.
   Quantity 01 price:  $62.00 each
   Quantity 10 price:  $58.25 each
   Lower prices are available at higher volume.
   Quantity 1000 price: $38.50 each

Additional dial scale assemblies (including cable and scale) can be ordered.
Model Numbers:
"Dial Scale Assy for the -350A"
"Dial Scale Assy for the -347A"

Price: $19.00 each.

• General Notes on Pricing of the above controllers.
• Controllers Only: Prices shown are for the "controllers only". 
• Currency: All prices are $US.