Usage of temperature controller in drying and culturing dual purpose oven

1、 Description of temperature controller operation panel indicator definition 1 "Run / at" indicator: this light is on during operation and off at the end of operation; this light flashes at self-tuning timing 2 "Out" indicator light: when there is heating output, this light will be on, otherwise it will be off 3 "ALM" indicator light: this light is on when the sensor is abnormal or over temperature alarm, otherwise it is off II Operation and use method of temperature controller 1 The controller is powered on, the upper row of display window displays "graduation number and version number", and the lower row displays "range value" for about 3 seconds, and then it enters into the normal display state 2 Reference and setting of temperature and constant temperature time 1) if there is no constant temperature timing function: Click the "setting" key to enter the temperature setting state, and the prompt "SP" will be displayed in the lower row of the display window, and the temperature setting value will be displayed in the upper row (the first bit value flashes), which can be modified to the required setting value through the shift, increase and decrease keys; then click the "setting" key to exit the setting state, and the modified setting value will be saved automatically In this setting state, if no key is pressed within 1 minute, the controller will automatically return to the normal display state 2) If there is constant temperature timing function Click the "setting" key to enter the temperature setting state, and the prompt "SP" will be displayed in the lower row of the display window, and the temperature setting value will be displayed in the upper row (the first bit value flashes), and the modification method is the same as above; then click the "setting" key to enter the constant temperature time setting state, and the prompt "ST" will be displayed in the lower row of the display window, and the constant temperature time setting value (the first bit value flashes) will be displayed in the upper row; then click "setting" Press the "set" key to exit this setting state, and the modified setting value will be saved automatically When the constant temperature time is set to "0", it means that there is no timing function, the controller runs continuously, and the lower row of the display window displays the temperature setting value; when the setting time is not "0", the lower row of the display window displays the operation time or the temperature setting value (see 7) The operation time display mode (the value of parameter NDT) in internal parameter table -2 When the operation time is displayed, the lower decimal point will be on When the measurement temperature reaches the set temperature, the timer will start timing, and the lower decimal point will flash When the timing time is up and the operation is over, "End" will be displayed in the lower row of the display window, and the buzzer will beep and beep for 1 minute After the operation, long press the "decrease" key for 3 seconds to restart the operation Note: in the process of timing, if the temperature setting value is increased, the instrument will start timing again from 0 If the temperature setting value is decreased, the instrument will keep timing 3 Sensor abnormal alarm - if "---" is displayed on the upper row of the display window, it means that the temperature sensor is faulty or the temperature exceeds the measurement range or the controller itself is faulty, the controller automatically disconnects the heating output, the buzzer continuously sounds, and the alarm light is always on Please check the temperature sensor and its wiring carefully 4 When the upper deviation over temperature alarm is given, the buzzer beeps and beeps, and the "ALM" alarm light is always on; when the lower deviation alarm is given, the buzzer beeps and beeps, and the "ALM" alarm light flashes If the over temperature alarm is caused by changing the temperature setting value, the "ALM" alarm light is on, but the buzzer does not beep 5 The buzzer can be silenced by pressing any key 6 "Shift" key: click this key in the setting state to make the set value shift flicker for modification 7 "Decrease" key: click this key in the setting state to decrease the set value, and long press this key to decrease the set value continuously 8 "Increase" key: click this key in the setting state to increase the set value, and long press this key to increase the set value continuously 9 In the setting state, if no key is pressed within 1 minute, the controller will automatically return to the normal display state 3、 System self-tuning when the temperature control effect is not ideal, the system can be self-tuning In the process of self-tuning, the temperature will have a large overshoot Please fully consider this factor before the user carries out the system self-tuning Long press the "shift / self-tuning" key for 6 seconds in the non setting state to enter into the system self-tuning program, "at" indicator flashes, after the end of self-tuning, the indicator stops flashing, the controller will get a better set of system PID parameters, and the parameter values will be saved automatically In the process of system self-tuning, press and hold the "shift / self-tuning" key for 6 seconds to stop the self-tuning program In the process of system self-tuning, if there is upper deviation over temperature alarm, "ALM" alarm light is not on, and the buzzer does not sound, but the heating alarm relay will be automatically disconnected The "set" key is invalid during system self-tuning In the process of system self-tuning, whether there is constant temperature time setting or not, the lower row of the controller display window always displays the temperature setting value 4、 For internal temperature parameters, press the setting key for about 3 seconds, the password prompt "LC" will be displayed in the lower row of the controller display window, and the password value will be displayed in the upper row Through the increase, decrease and shift keys, the required password value will be modified Click the setting key again If the password value is not correct, the controller will automatically return to the normal display state If the password value is correct, enter the internal temperature parameter setting state Click the setting key again to modify each parameter in turn Press and hold the setting key for another 3 seconds to exit this state, and the parameter value will be saved automatically.