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When it comes to the temperature controller, you must be very familiar with it. For example, if you want to adjust the temperature of the air conditioner, you can set it directly on the temperature controller, which is very convenient. Next, the intelligent temperature controller introced to you has many unique functions and functions compared with the general temperature controller. Without saying much, let's get to the main topic today. Let's discuss some use and adjustment methods of intelligent temperature controller
Set temperature: press set key to set or view the temperature set point. Press the set key once, and the nixie tube character starts to flash, indicating that the instrument enters the setting state. Press the △ key to increase the setting value, press the ▽ key to decrease the setting value. Long press the △ key or ▽ key, and the data will change rapidly. Press the set key again, and the instrument will return to the normal working state. The temperature setting is completed
2. Return differential control (xmt201-c): press set key for 3 seconds, and the instrument will enter the internal parameter setting state. The first parameter that appears and flickers is C00, which is the return difference value. The return difference control parameter should be adjusted carefully. The instrument controls the heating output value to the set value. When the temperature drops to the set value minus the return difference value, it starts heating again. The output (relay) does not act within the return difference range. This can rece the number of relay actions and prolong the service life of the relay. Example: if the set value is 80.0 ℃, the return difference is 0.5, the relay will release when the instrument control is heated to 80.0 ℃, and the relay will close when the temperature drops to 80.0 ℃ - 0.5 ℃ = 79.5 ℃. The larger the return difference is, the less the number of relay actions will be. If the return difference is too large, the control accuracy will be reced. After adjusting the return differential parameters, press the set key for 3 seconds, and the instrument returns to the normal working state
3. Advance setting (xmt201-e): press the set key for 3 seconds to enter the inner parameter setting state. The first parameter that appears and flashes is E00, that is, the advance of heating stop. The advance parameter should be adjusted carefully. In order to rece the temperature overshoot, the heating will be cut off in advance when the instrument controls the heating output. When the temperature drops below the advance, the heating will start again, and the output (relay) will not operate within the range of set value and advance, In this way, the number of relay actions can be reced to prolong the service life of the relay. Example: if the setting value is 50.0 ℃, the advance is 0.5, the relay will release when the instrument control is heated to 49.5.0 ℃, and the relay will close when the temperature drops to 50.0 ℃ - 0.5 ℃ = 49.5 ℃. The larger the advance, the less the relay action times. If the advance is too large, the control accuracy will be reced. After adjusting the advance parameter, press the set key for 3 seconds to return the instrument to the normal working state
4. Time proportion setting (xmt201-p): press the set key for 3 seconds to enter the inner parameter setting state. E: For the scale band offset, e parameter can make the actual control point translation. Even if the center of the time scale shifts, the E value can be positive or negative depending on the heating system. P: It is the proportional band, that is, the proportional control value. In order to facilitate understanding and make the proportional band have a larger representation space, the proportional band of this instrument is a single-sided proportional band, that is, the actual proportional band is twice the p value. Taking the actual control point as the center, the output heating proportion is evenly distributed from bottom to top in the range of P value according to 0% - 100%. T: In order to heat the output cycle, that is, the working cycle of the relay, the control effect is good when the T value is small, but if the T value is too small, the life of the relay will be reced e to frequent work. Generally, t value is 20-60 seconds. Example: if P is set to 4.0 (the actual proportional band is 8.0), the temperature is set to 60.0 degrees, and E is set to 2.0 degrees, the actual control point is 58.0 degrees. When the temperature reaches 54.0 degrees, the instrument will enter the proportional band control state
5. Intelligent control parameter setting (xmt201-d): press the set key for 3 seconds to enter the inner parameter setting state. E: When p = 0, this parameter is the advance of heating stop. When p is not equal to 0, the instrument works in intelligent PID mode. When p is not equal to 0, parameter E is meaningless. P: It is the proportional band, that is, the proportional control value. The instrument takes the set value as the center, and the p value is distributed on both sides of the set point. Within the p value range, the instrument works in PID mode. T: In order to heat the output cycle, that is, the working cycle of the relay, the control effect is good when the T value is small, but if the T value is too small, the life of the relay will be reced e to frequent work. Generally, t value is 20-60 seconds. In order to simplify the operation, the integral time (I) and differential time (d) of the instrument are designed as hidden parameters, and their default values are: I = 180, d = 45
6. Error correction: when it is confirmed that the displayed value of the instrument is not the correct measurement value, the displayed value can be corrected. Press the set key for 3 seconds to enter the inner menu of the instrument. The first parameter to appear and flash is E00, which is the advance. Press the set key again to appear and flash the parameter, which is the error correction parameter. With the △ or ▽ key, this parameter can be modified. The range of error correction is - 9.9 ℃ to + 9.9 ℃. After correction, press set key to exit. The correction value of the instrument is 0.0 when it is delivered from the factory. When it is used, it is necessary to prevent the instrument with correct display from being corrected to incorrect
the above information is summarized based on my personal experience and knowledge. It seems to be complicated, but in fact it is very simple to operate. We should also remind you that when using the intelligent temperature controller, the method must be appropriate, because it also has a life. If the method is not appropriate, it may shorten its life. Therefore, we should be alert to the problems that should be paid attention to. Finally, I hope the above knowledge and information can help you
For the intelligent controller of the water pump, press the start button to start the controller of the water pump. The specific operation steps are as follows:
1. Press the start button to start the controller of the water pump< br />