temperature controller W1209 thermostat

1. Product features

1. 100% complete 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 decimal 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, indicator light, digital tube and buzzer status 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 disconnect; Display—high temperature alarm

Five, parameter function description

Long press SET for 5 seconds to enter the main menu setting, press +-to switch P0…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 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 temperature measurement value is less than or equal to the temperature set point, the heating relay is turned on and the heater starts; when the temperature measurement 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 value to 0.1-15, press SET once to return after completion, long press SET Or the controller will automatically confirm the completion of no key action for 10 seconds.
In refrigeration 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, 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 cut off. The opening temperature starts to rise. When it rises to the set value of 25°C, the relay closes and the refrigerator starts again, so that the temperature is not higher than 25°C by repeated cycles.
In heating mode: when the temperature measurement value is less than or equal to the set value, the relay is closed 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 by repeated cycles.

P2 Maximum temperature setting upper limit: In
order to avoid the danger of excessively high setting temperature caused by 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 you want a higher temperature set point to expand the temperature range, you need to adjust the upper limit set value first.

P3 The lower limit of the lowest temperature setting: In
order to prevent the temperature from being too low and causing ice blockage due to 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 set 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 minimum temperature set point can only be set to 2°C. 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 the measured temperature deviates from the standard temperature or the user’s hardware has special needs, this function can be used for correction. The corrected temperature = the temperature before the correction + the effective range of the correction value is -7.0~7.0.
Long 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 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.
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 finishing, 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 is greater than or equal to the set value, the refrigerator will not immediately start the cooling, it needs to run 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 shutdown interval between two consecutive starts of the refrigerator or heater is less than the set value of the delayed 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 the timing starts at this time. Work, 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, the delay function is turned off.

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, all the above parameters will be restored to factory settings.