XH-W1209 Digital Display Temperature Controller High Precision Temperature Controller Switch W1209

1. Product features

 

1. 100% complete machine placement, wave soldering, stable performance and good consistency

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

3. Automatic memory of 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 number can be controlled (0.1-15.0)

 

 

2. Technical parameters

 

Temperature control range: -50~110℃

Resolution: -9.9~99.9o'clock 0.1℃ Other temperature range 1℃

Temperature measurement accuracy: 0.1℃

Control accuracy: 0.1℃

Return accuracy: 0.1℃

Refresh frequency: 0.5S

Input power supply: DC 12V

Measurement input: NTC (10K 0.5%) waterproof sensor

Output: 1 relay output, capacity = 20A 125VAC, 20A 14VDC

Environmental requirements: -10~60℃ humidity 20%-85%

Specification size: 48.5*40mm

Power consumption of the whole machine: quiescent current: ≤10MA, suction current: ≤65MA

 

Three, how to use

 

After connecting the power supply and equipment, the controller can be powered. At this time, the display is the measured temperature. Press the SET button once, and the display temperature flashes. Press +－ to set the required temperature (press and hold +－to quickly rise and fall). After the setting is complete, press SET to confirm and return. At this time, the controller automatically performs relay on and off according to the setting! The output of the thermostat is a 20A relay, which meets various high-power loads. After connecting the control circuit, the thermostat can be powered. At this time, the display screen shows the ambient temperature.，

4. Status description of indicator lights, digital tubes and buzzers

Indicator light: flashing to indicate the delay in cooling or heating start, and always on to indicate that the relay is closed

Digital tube: The display LL is open to the sensor, please connect the sensor according to the instructions; the display HH is out of the measurement range, and the thermostat will force the relay to be disconnected; the display—is a high temperature alarm

 

 

5. Parameter function description

 

Press and hold SET for 5 seconds to enter the main menu settings, press +－to switch P0…P6, press and hold SET or 10 seconds without button action, the controller will automatically confirm the return.

 

 

P0 cooling and heating mode：

Press AND hold SET for 5 seconds to display P0, PRESS SET ONCE to SET the working MODE, press +－to switch [H is the HEATING mode] [C is the cooling mode] PRESS SET ONCE to return, press and hold SET or 10 seconds without BUTTON action, THE controller will automatically CONFIRM the completion.

In refrigeration mode: when the temperature measurement value is ≥the temperature set point, the refrigeration relay absorbs and the refrigerator starts; when the temperature measurement value is ≤the temperature set point-return difference, the refrigeration relay is disconnected and the refrigerator is turned off.

In heating mode: when the temperature measurement value is ≤the temperature set point, the heating relay absorbs and the heater starts; when the temperature measurement value is ≥the temperature set point +return difference, the heating relay is disconnected and the heater is turned off.

 

 

P1 return setting：

Press and hold SET for 5 seconds to display P0, press +－to switch to P1, press SET once to set the return value, press +－to set the return value to 0.1-15, press SET once to return after completion, press and hold SET or 10 seconds without button action, the controller will automatically confirm the completion.

In cooling mode: when the temperature measurement value is ≥the set value, the relay absorbs and the refrigerator starts; when the temperature measurement value is ≤ the set value-return value, the relay is disconnected and the refrigerator is turned off.

For example, the environment is 30℃, the set value is 25℃, and the return difference is set to 2℃. After power-on, the relay closes the refrigerator and starts. When the cooling reaches 23℃, the relay disconnects the refrigerator and turns it off. At this time, since the refrigerator has been disconnected, the temperature begins to rise. When it rises to the set value of 25℃, the relay closes the refrigerator and starts again, and the control temperature is not higher than 25℃ after repeated cycles.

In heating mode: when the temperature measurement value is ≤the set value, the relay absorbs and the heater starts; when the temperature measurement value is ≥the set value + the return value, the relay is disconnected and the heater is turned off.

For example, the environment is 10℃, the set value is 25℃, and the return difference is set to 2℃. After power-on, the relay closes the heater and starts. When it is heated to 27℃, the relay disconnects the heater and turns it off. At this time, since the heater has been disconnected, the temperature begins to drop. When it drops to the set value of 25℃, the relay closes the heater and starts again, and the control temperature is not lower than 25℃ in repeated cycles.

 

 

P2 maximum temperature setting upper limit：

In order to avoid the danger of the set temperature being too high due to misoperation by others, this thermostat has a maximum setting upper limit function, which defines the setting range of the maximum temperature setting point controlled by the thermostat.

Press and hold SET for 5 seconds to display P0, press +－to switch to P2, press SET once to set the maximum upper limit, press +－to set the maximum temperature that can be set, the maximum value is 110, press SET once to return after completion, press and hold SET or 10 seconds without button action, the controller automatically confirms the completion.

For example: the maximum temperature setting point set to 60 can only be set to 60℃. If you want the temperature setting point to expand the higher temperature range, you need to adjust the upper limit setting value first.

 

 

P3 minimum temperature setting lower limit：

In order to avoid the misoperation of others causing the temperature to be too low and ice blocking occurs, this thermostat has a minimum setting upper and lower limit function, which defines the setting range of the lowest temperature setting point controlled by the thermostat.

Press and hold 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 temperature that can be set, the lowest value is -50, press SET once to return after completion, press and hold SET or 10 seconds without button action, the controller automatically confirms the completion.

For example: the minimum temperature setting point set to 2 can only be set to 2℃. If you want the temperature setting point to be lower and the temperature range to be expanded, you need to adjust the setting value of the lower limit 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 to correct. The corrected temperature = the temperature before the correction + the effective range of the corrected value is -7.0~7.0.

Press and hold SET for 5 seconds to display P0, press +－to switch to P4, press SET once to correct, press +－to set the correction value, press SET once to return after completion, press and hold SET or 10 seconds without button action, the controller will automatically confirm the completion.

For example, the normal display is 25 degrees; 25 degrees is displayed when the temperature is corrected to 0; 26.5 degrees is displayed when the temperature is corrected to 1.5; 23.5 is displayed when the temperature is corrected to -1.5.

 

 

P5 delayed start-up time (unit: minutes)：

When the work of the refrigerator or heater needs to be delayed, the delay function can be turned on to protect the life of the equipment.

Press and hold SET for 5 seconds to display P0, press +－to switch to P5, press SET once to set the delay start time in minutes, press +－to set 0-10 minutes, press SET once to return after completion, press and hold SET or 10 seconds without button action, the controller will automatically confirm the completion

In cooling mode: the first time it is powered on, if the current temperature is ≥ the set value, the refrigerator will not start cooling immediately, and it needs to start after running the set delay time.

In heating mode: the first time it is powered on, if the current temperature is ≤ the set value, the heater will not start heating immediately, and it needs to start after running the set delay time.

When the downtime between the two adjacent starts of the refrigerator or heater is greater than the set value of the delayed start-up time, the refrigerator starts immediately.

When the shutdown time between the two adjacent starts of the refrigerator or heater is less than the set value of the delayed start-up time, the equipment can only be started after the set delay start-up time of the refrigerator is completed.The delay time is calculated from the moment of shutdown.

For example, in the cooling state, the delay is set to 5 minutes. After turning on the refrigerator, the start-up delay is delayed. After 5 minutes, the refrigerator is turned on and the refrigerator stops when the required temperature is reached. The timing starts at this time. Work immediately when the next refrigerator start-up timing is completed. If the timing is not completed, you have to wait for the timing to end before you can work. The LED indicator flashes during the delay.

When the delay start is set to 0, the delay function is turned off.