W1209 Patch Mini Version Thermostat High Precision Digital Display Temperature Controller Control Switch Incubation |

W1209 Patch Mini Version Thermostat High Precision Digital Display Temperature Controller Control Switch Incubation |

Warm reminder, precautions for the use of W1209 digital temperature controller:

1 The power supply voltage should not exceed plus or minus 10% of the nominal voltage of the thermostat you purchased, which may damage the power chip.

2 The load power cannot exceed the power range that the relay can withstand, otherwise the relay may be damaged and the suction point of the relay may be burned.

3 Please use high-quality power supply. When the low-quality power supply is turned on, the surge voltage and current may exceed its nominal voltage and current by a lot, and the instantaneous high voltage and large current may break down the power chip. 

  Remember, remember, remember! ! !

How to use:

  Connect the power supply and load to supply power to the controller. At this time, the display shows the measured temperature. Press the SET button once, and the temperature on the display will flash. Press +- to set the desired temperature. After the setting is completed, press SET to confirm and return. The controller automatically performs relay on and off according to the setting! The output of the thermostat is a 10A relay, which can meet various high-power loads. Please ensure that the wiring is correct.

 Status description of indicator light and digital tube:

 Indicator light: Off means the relay is off, constant light means the relay is closed   Digital tube: display LL for sensor open circuit; display HH for exceeding the measuring range and the thermostat will forcibly open the relay; display --- for high temperature protection

  Parameter function description:

  Long press SET for 5 seconds to enter the main menu setting, press +- to switch PO to p8; long press SET or 10 seconds without key action, the controller automatically confirms and returns

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1. Product features 

1. 100% full machine patch, wave soldering, stable performance, good consistency

2. Embedded central processing unit (MCU), smarter, lower power consumption

3. Automatic memory for power-off settings (MCU built-in EEPROM storage unit )

4. The control accuracy is 0.1 degrees Celsius

5, the return difference is set from 0.1, and the decimals can be controlled (0.1-15.0) 

2. Technical parameters 

  Temperature control range: -50~110℃ Resolution: -9.9~99.9 when 0.1℃ Other temperature range 1℃ Temperature measurement accuracy: 0.1 ℃ Control accuracy: 0.1 ℃ Hysteresis accuracy: 0.1 ℃ Refresh frequency: 0.5 S Input power: DC 5V, DC 12V, DC 24V measurement input: NTC (10K 0.5%) Waterproof sensor output: 1 relay output, capacity = 20A 125VAC, 20A 14VDC Environmental requirements: -10~60℃ Humidity 20%-85% Specifications and dimensions: 48.5*40mm machine power consumption: quiescent current: ≤10MA pull-in current: ≤65MA 

  3. How to use 

Connect the power supply and equipment to power the controller. At this time, the display shows the measured temperature. Press the SET button once, the temperature on the display flashes, and press +-to set the desired temperature (press +-to quickly rise and fall). After completion, press SET to confirm and return. At this time, the controller will automatically switch on and off the relay according to the setting! The thermostat output is a 20A relay, which can meet various high-power loads. Connect the control circuit to power the thermostat. At this time, the display shows the ambient temperature. Fourth, the status of the indicator light, the digital tube and the buzzer Description indicator light: flashing means the cooling or heating start delay, constant light means the relay is closed. Digital tube: display LL means the sensor is open, please connect the sensor according to the instructions; display HH means that the measuring range is out of range, the thermostat will force the relay to be disconnected; Display---High temperature alarm 

 Five, parameter function description 

 Long press SET for 5 seconds to enter the main menu setting, press +-to switch P0 to P6, long press SET or 10 seconds without key action, the controller automatically confirms and returns. 

  P0 Cooling and heating mode: Long press SET for 5 seconds to display P0, press SET once to set the working mode, press +-to switch [H for heating mode] [C for cooling mode] Press SET once to return, long press SET or 10 seconds without The key action controller automatically confirms the completion. In refrigeration mode: when the temperature measurement value is greater than or equal to the temperature set point, the refrigeration relay is switched on and the refrigerator starts; when the temperature measurement value is less than or equal to the temperature set point-hysteresis, the refrigeration relay is disconnected and the refrigerator is turned off. In heating mode: when the measured temperature value is less than or equal to the temperature set point, the heating relay is turned on and the heater starts; when the measured temperature value is greater than or equal to the temperature set point + hysteresis, the heating relay is turned off and the heater is turned off. 

P1 hysteresis setting: long press SET for 5 seconds to display P0, press ＋－to switch to P1, press SET once to set the hysteresis value, press ＋－ to set the hysteresis to 0.1-15, press SET once to return after completion, and long press SET Or the controller will automatically confirm the completion of no key action for 10 seconds. In the cooling mode: when the temperature measurement value is greater than or equal to the set value, the relay is closed and the refrigerator starts; when the temperature measurement value is less than or equal to the set value-the return difference, the relay is disconnected and the refrigerator is turned off. For example, when the environment is 30°C, the set value is 25°C, and the hysteresis is set to 2°C. After power-on, the relay is closed and the refrigerator starts. When the cooling reaches 23°C, the relay is disconnected and the refrigerator is closed. At this time, the refrigerator has been disconnected. The opening temperature begins to rise. When it returns to the set value of 25°C, the relay closes and the refrigerator starts again, so that the temperature is controlled to be no higher than 25°C by repeating the cycle. In heating mode: when the temperature measurement value is less than or equal to the set value, the relay is turned on and the heater starts; when the temperature measurement value is greater than or equal to the set value + return difference value, the relay is turned off and the heater is turned off. For example, when the environment is 10°C, the set value is 25°C, and the hysteresis is set to 2°C. After power on, the relay closes and the heater starts. When the heating reaches 27°C, the relay opens and the heater turns off. At this time, the heater has been turned off. The opening temperature begins to drop. When it drops to the set value of 25°C, the relay closes and the heater starts again, so that the temperature is not lower than 25°C through repeated cycles. 

 P2 Maximum temperature setting upper limit: In order to avoid the danger of excessively high setting temperature caused by the misoperation of others, this thermostat has the highest setting upper limit function, which limits the setting range of the highest temperature set point controlled by the thermostat. Long press SET for 5 seconds to display P0, press +-to switch to P2, press SET once to set the highest limit, press +-to set the highest settable temperature, the maximum value is 110, press SET once to return after completion, long press SET or 10 The controller automatically confirms the completion of no key action within seconds. For example, if the temperature set point is set to 60, the maximum temperature can only be set to 60°C. If the temperature set point is to be higher, the temperature range needs to be adjusted first. 

  P3 The lower limit of the lowest temperature setting: In order to prevent the temperature from being too low and causing ice blockage caused by the misoperation of others, this thermostat has the function of the lowest setting upper and lower limit, which limits the setting range of the lowest temperature setting point controlled by the thermostat. Long press SET for 5 seconds to display P0, press ＋－to switch to P3, press SET once to set the lowest limit, press ＋－ to set the lowest settable temperature, the lowest value is -50, press SET once to return after completion, long press SET or The controller automatically confirms the completion of no key action for 10 seconds. For example: set to 2 The temperature set point can only be set to 2℃. If you want a lower temperature set point to expand the temperature range, you need to adjust the lower limit set value first. 

  P4 Temperature correction: When there is a deviation between the measured temperature and the standard temperature or due to the special needs of the user's hardware, this function can be used for correction. The corrected temperature = the temperature before the correction + the correction value. The effective range is -7.0~7.0. Press SET for 5 seconds to display P0, press ＋－to switch to P4, press SET once to calibrate, press ＋－ to set the correction value, press SET once to return after completion, long press SET or no key action for 10 seconds, the controller automatically confirms the completion . For example, the normal display is 25 degrees; when the temperature is corrected to 0, it displays 25 degrees; when the temperature is corrected to 1.5, it displays 26.5 degrees; when the temperature is corrected to -1.5, it displays 23.5. 

  P5 Delay start time (unit: minute): When the refrigerator or heater needs to be delayed, the delay function can be turned on to protect the life of the equipment. Long press SET for 5 seconds to display P0, press +-to switch to P5, press SET once to set the delay start time unit as minutes, press +-to set 0-10 minutes, press SET once to return after completion, long press SET or 10 seconds No button action The controller automatically confirms the completion of the cooling mode: the first time the power is turned on, if the current temperature ≥ the set value, the refrigerator will not immediately start the cooling, it needs to start after the set delay time. In heating mode: the first time the power is turned on, if the current temperature is less than or equal to the set value, the heater will not start heating immediately, and it will start after the set delay time. When the stop time between two consecutive starts of the refrigerator or heater is greater than the set value of the delayed start time, the refrigerator starts immediately. When the stop time interval between two consecutive starts of the refrigerator or heater is less than the set value of the delay start time, the device can be started after the set delay start time of the refrigerator has been run after restarting. The delay time is calculated from the moment of shutdown. For example, in the cooling state, the delay is set to 5 minutes, and the refrigerator starts to delay after turning on. After 5 minutes, the refrigerator is turned on. When the required temperature is reached, the refrigerator stops and starts timing at this time. Work, the unfinished timing can only work until the timing ends, and the LED indicator flashes during the delay. When the delay start is set to 0, it is equal to close the delay function. 

  Restore factory settings: Due to some human reasons, the internal settings of the thermostat are chaotic. It takes time to set one by one. At this time, you can use this function to restore the factory settings. The specific method is: in the shutdown state, press and hold at the same time Press + and -, then turn on the machine, all the above parameters will be restored to the factory settings. 

   The factory setting values ​​are as follows: