Digital thermostat instruction manual

1. Product information and featuresThis product adopts STM is an advanced microcomputer technology, LED digital display, measurement and temperature control are accurate to 0.1℃, and high temperature alarm and sensor failure disconnect protection are added. Provided under the premise of customer needs is a good solution, simple and practical, is an economical product with high cost performance, small integrated intelligent control, free switching of cooling and heating modes, delay and return difference can be set, especially suitable for Constant temperature of various precision instruments.2. Technical parametersTemperature control range: -50~110℃Resolution: -9.9~99.9, 0.1℃, other temperature range 1℃Temperature measurement accuracy: 0.1 ℃Control accuracy: 0.1 ℃Backlash accuracy: 0.1 ℃Refresh rate: 0.5 SInput power: DC/AC 12VMeasurement input: NTC (10K 0.5%) waterproof sensorOutput: 1 relay output, capacity=10AEnvironmental requirements: -10~60℃, humidity 20%-85%Size: 78*51mm (Mounting hole M3. Diagonal 75mm)Power consumption of the whole machine: quiescent current: ≤35MA pull-in current: ≤65MA3. How to useConnect the power supply and equipment to supply power to 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 10A 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.4. Status description of indicator light, digital tube and buzzerIndicator light: flashing means the cooling or heating start delay, constant light means the relay is closedDigital tube: display LL as the sensor is open circuit, please connect the sensor according to the instructions; display HH as the measurement range is out of range, the thermostat will forcibly disconnect the relay; display --- high temperature alarmBuzzer: When the digital tube displays LL, HH or ---, the buzzer emits a beep-di-di-prompt tone Four, parameter function descriptionLong press SET for 5 seconds to enter the main menu setting, press +-to switch P0...P8 Long press SET or 10 seconds without key action, the controller automatically confirms and returnsP0 cooling and heating modeLong 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 key action, the controller automatically confirms FinishIn 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 offIn 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 offP1 Hysteresis settingLong 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 0.5-15, press SET once to return after completion, long press SET or no button for 10 seconds Action controller automatically confirms completionIn 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, 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 temperature reaches 23°C, the relay is disconnected and the refrigerator is turned off. The opening temperature starts 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 not higher than 25°C through repeated cycles.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 is the upper limit of high temperature setting:In order to avoid the danger that the set temperature is too high due to the misoperation of others, this thermostat has a high setting upper limit function, which limits the setting range of the high temperature set point that the thermostat controlsLong press SET for 5 seconds to display P0, press +-to switch to P2, press SET once to set the upper limit, press +-to set the high temperature that can be set, the maximum value is 110, press SET once to return after completion, long press SET or no key action for 10 seconds, the controller automatically confirms completionFor example, if the temperature set point is set to 60, it can only be set to 60℃. If the temperature set point is to be higher, the temperature range needs to be adjusted first.P3 is the lower limit of low temperature setting:In order to avoid other people's misoperation and cause ice blockage when the temperature is too low, this thermostat has a low setting upper and lower limit function, which limits the setting range of the low temperature set point that the thermostat controlsLong press SET for 5 seconds to display P0, press ＋－to switch to P3, press SET once to set the lower limit, press ＋－ to set the low temperature which can be set, the low value is -50, press SET once to return, long Press SET or no key action for 10 seconds, the controller automatically confirms completionFor example: set to 2 The temperature set point is low and 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 correctionWhen there is a deviation between the measured temperature and the standard temperature or due to the special needs of the user's hardware, you can use this function to calibrate. The corrected temperature = the temperature before the correction + the corrected value. The effective range is -7.0~7.0Press 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 completionFor 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: minuteWhen there is a delay in the work of the refrigerator or heater, the delay function can be turned on to protect the life of the equipmentPress 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 controller automatically confirms completionIn the cooling mode: the first time the power is turned on, if the current temperature ≥ the set value, the chiller will not immediately start the cooling, it needs to run after the set delay time to startIn 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 needs to run 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 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 refrigerating state, the delay is set to 5 minutes. After turning on the refrigerator, the refrigerator starts to delay. After 5 minutes, the refrigerator is turned on. When the required temperature is reached, the refrigerator stops, and the timer starts at this time. Work, unfinished timing can only work until the timing is over, the LED indicator flashes during the delayWhen the delay start is set to 0, it is equal to close the delay functionP6 key tone switchLong press SET for 5 seconds to display P0, press ＋－to switch to P6, press SET once to set whether to turn on the key sound, press ＋－ to set on/off, press SET once to return after completion, long press SET or no key action control for 10 seconds The device automatically confirms completionThe buzzer switch is on/off. When the button is set to on, the button will emit a beeping sound when the button is activated. When it is set to off, the buzzer will be turned off, and there will be no sound when the button is pressed.P7 High temperature alarmLong press SET for 5 seconds to display P0, press +-to switch to P7, press SET once to display on/off (set to off to turn off the secondary function) set to on, press SET once to set the high temperature alarm temperature point, press +-to set 0 ~110, press SET once to return after completion, long press SET or no button action for 10 seconds, the controller will automatically confirm the completionThe setting range of high temperature alarm is 0-110 or off to close the function. When the high temperature alarm is reached, the buzzer will emit a rapid beep and the relay will be forcibly disconnected.For example, if we want to heat a certain liquid or space to 40 degrees, set 80 degrees as a dangerous temperature. During work, when the temperature is higher than 80 degrees due to external irresistible factors, the high temperature alarm relay will be activated and the buzzer will be turned off quickly. Call the police and promptly remind the staff to take corresponding measures to restore the loss! The alarm temperature can be set according to actual needs. If you don’t want this function, you can set the temperature to off. Note that the high temperature alarm will be automatically released when the normal temperature is restored. The thermostat will work normallyP8 restore factory settingsDue to some man-made reasons, the internal settings of the thermostat are chaotic, and it takes a lot of time to set one by one. At this time, you can use this function to restore the factory settings. The specific method isLong press SET for 5 seconds to display P0, press +-to switch to P8, press SET once to set it to on or off, on to restore factory settings, off to perform no action, press SET once to return after completion, long press SET or 10 seconds The bell no button action controller automatically restores the factory settings and the parameters are shown in the table below