Signal Consulting, LLC 

Model Si23BdTEPITC1-FC12B-26V-16A 

12-Bit, Field Configurable, Bidirectional, Thermo-Electric (TE), Proportional-Integral (PI), Temperature Controller with RS232 LCD Port, Centigrade or Fahrenheit Display Scales and with Analog or Digital Control Inputs for Heating or Cooling Applications





Buy this Product

Si23BdTEPITC1-FC12B-26V-16A Features:

Analog and Digital Control Ports: User can select between analog (Potentiometer) or Digital (Up/Down Keys) Control Inputs.

PI Temperature Control: 12-Bit Proportional and Integral (PI) Temperature Controller in the -500C to +1200C Range with 0.0650C  steps on 1 Load.

Efficient H-Bridge with PWM: 750Hz Pulse-Width Modulation (PWM) is used to perform the heating and cooling function (at the same time) on a Peltier type (TE) cell, functioning as a bidirectional heat-pump.

One Digital Temperature Sensor: Digital Temperature Sensor with 0.06250C Resolution and 1/20C Accuracy  in the -100C to +800C  Range, and approx.  10C Accuracy in the -550C to +1250C  Range.

Temperature Sampling Rate:  The temperature is sampled at approximately 1Hz rate and the control-loop/display is updated with this same rate.

An Optional RS232 LCD Port: For Set and Measured Temperature Display.

Alarm Kill Switch on J1: A normally open switch (or an Open Collector npn Transistor) can be connected to jumper port J1 (as shown below), J1 Open=Normal operation, J1 Short=Load (TE Cell) is open.

Voltage Requirement: VP (from pin +P to pin - P): 9V to 26V DC, unregulated DC voltage.

High Power-Efficiency: 98.5% typical, at 26V and 16A

Max Load Power: 416W at 26V, 16A.

Max Operating Temperature: +450C with the Integrated AP1 Aluminum Plate Heat Sink Heat Sink, as shown.
Power Semiconductors: Four 90A Hex-MOSFETs
Overall Dimensions: 4.0" x 3.3" x 1.4" (102 x 84 x 34mm).
Components Type: 100% Solid State, NO Relays

On Board:
Optically Isolated Control Signals
Filter Capacitors, Voltage Transient Suppression (VTS) diodes.
Bicolor LED Indicator,  (Red=Hot, Green=Cold) 




 For Details, Download the  Si23BdTEPITC1-FC12B-26V-16A-2Y3   Manual


The Si23BdTEPITC1-FC12B-26V-16A is a 26V 16A, microprocessor based, closed-loop, Field-Configurable, Bidirectional, Thermo-Electric, Proportional-Integral (PI) Temperature Controller board that heats and cools a thermal-zone (lead reversal on TE cell is NOT required). An efficient high-power H-bridge controls the current (in the 0 to +/- 16A range) to a Peltier type Thermo-Electric (TE) cell (or a bank of cells, connected in parallel), functioning as a bidirectional heat-pump. By PI control, we mean that the amount of correction used in the control-loop is proportional to the difference and the Integral of the difference between the set and measured temperature values. In a properly tuned PI controller, the temperature overshoots and oscillations (“hunting”) are limited to approximately + or - 0. 50C). An onboard microprocessor measures and controls the temperature; monitors the user inputs; and drives a 2 line x 16 character LCD. The temperature is sampled at approximately 1Hz rate and the control-loop/display is updated with the same rate.  A small 12-bit digital temperature sensor, Signal’s part number Si24DTsens-12B  (connected to port CN3) is used to measure and control the temperature in the -500C to +1250C range, with 10 C accuracy and with 0.0650 C precision. Because this sensor is digital, it is virtually immune to noise and loading; ideally suited for remote sensing. This sensor uses a unique “1-wire interface” (with parasite power mode) that requires only 2-conductors for reliable remote (typical length of 20 meters) temperature sensing. The jumper J3 is used to select the Configuration Mode (J3 Open) or the Running Mode (J3 Short). In the Configuration Mode, a set of control-parameters are selected (or the Board is Configured); and in the Running Mode, the configured parameters are executed. In the Analog Configuration, the desired set-temperature is linearly adjusted (in the -250C=0V to +1020C=+5V range, with 0 C=19.68mV steps) with the Si5Pot1-5k  potentiometer (connected to pin I1 of Port CN6). In the Digital Configuration, the desired set-temperature is adjusted with the Si15PB2-MC3  Up/Down Keys (two Normally-Open Push Buttons, connected to Port CN4) in the -500C to +1250C range, with 0.0650 C steps. An LCD port (with 9600 Baud RS232 Interface Standard) is provided for display of the Set and Measured temperature data.  The LCD can be ordered from Signal under part number Si14LCD2L16CH-4PC  (2-Line by 16-Char display with 12” cable and 4-pin connectors, and with back-light). A bicolor LED is used to monitor the TE cell (or load) voltage (Red = Heat, Green = Cold). This board operates with a single unregulated voltage source (9V to 26V range). A small Aluminum Plate (3.3”x4.0”x0.065”) is required to operate at 416W power level. Higher power-levels can be achieved with more efficient heat-sinks. Typical applications are: Peltier Effect TE Coolers, Heat Pumps, etc. This board can be configured and programmed to perform efficiently in many customized applications.

A Typical Application of the Si23BdTEPITC1-FC12B-26V-16A

In this 12-bit, closed-loop, PI temperature control application; and in the Analog Mode, the Set-Temperature is linearly adjusted with the Si5Pot1-5k  potentiometer (connected to port CN6). In the Digital Mode, the Set-Temperature is adjusted with the Si15PB2-MC3 Up/Down Keys (connected to port CN4). The Peltier type Thermo-Electric (TE) cell is functioning as a bidirectional heat-pump; operating with 24VDC (unregulated) at 20A max. The temperature of the enclosed and insolated Hot/Cold Environment is measured with the Si24DTsens-12B Digital Sensor (Si24DTsens-Spec1-DS18B20) with 12” leads and connector. The LCD module can be ordered from Signal with part number Si14LCD2L16CH-4PC  (2x16 display with 12” cable and 4-pin connectors, and with back-light). A wide variety of Linear and Switching-Type Power Supplies can be purchased from:   Warning:  The connecting wires to the Load and the Power Supply must be heavy gauge copper wire (#12 AWG or heavier) to handle the rated current level. In addition, these heavy gauge wires act as a heat sink, protecting the board from overheating.

  Click on the "Buy this Product" Button  or the  Blue Links  to BUY these Accessories

Si23BdTEPTC1-FC12B-26V-16A,  Bidirectional Thermo-Electric Proportional and Integral (PI) Temperature Controller 26V, @ 16A.
Price $179.00

Note: If Buying the Si23BdTEPITC1-FC12B-26V-16A, it is recommended to buy one Si24DTsens-12B Digital Thermometer, one Si14LCD2L16CH-4PC  2 Line by 16 Character Serial LCD with 12" long  cable and 4-pin Connector, one Si5Pot1-5k  potentiometer with 12" leads. and one Si24PB2-MC3 Up and Down Push-Buttons with 12" lead and connector.

Si24DTsens-12B   12-bit Digital Thermometer ( -550C to +1250C Range, in 0.0650C Steps ) with 12" leads and 3pin Molex Connector. 
Price $39.00
Si14LCD2L16CH-4PC  Optional 2 Line by 16 Character Serial LCD with 12" long cable and 4-pin Connector.  
Price $59.00
Si5Pot1-5k  potentiometer with 12" lead.
Price $15.00
Si24PB2-MC3   Two Push-Buttons with 12" lead and with a 3-pin FM Molex Connector.
Price $29.00

Buy this Product


Availability: We usually ship in 2-3 business days.



All Products Are Proudly Made in the USA