0 1 00:00:21,350 --> 00:00:21,800 Hello. 1 2 00:00:21,860 --> 00:00:29,850 Let's continue to PID control example and with M0 auxiliary relay in the Delta plcs with the rising edge 2 3 00:00:29,870 --> 00:00:30,460 contact. 3 4 00:00:30,710 --> 00:00:38,400 We are writing our variables or our values to the data registers. 4 5 00:00:38,540 --> 00:00:46,190 So 300 to d100 so we think it as sampling time that we are detecting or we are adjusting 5 6 00:00:46,430 --> 00:00:47,590 in this line. 6 7 00:00:47,600 --> 00:00:56,750 And also we are sending 50 to D100 for the heating KP and heating KI heating upper and heating 7 8 00:00:57,110 --> 00:01:07,280 output lower limits than we are selecting or adjusting them all in here because of why you can focus to hear 8 9 00:01:07,510 --> 00:01:07,720 -- 9 10 00:01:07,760 --> 00:01:10,340 It is k4 what is it. 10 11 00:01:10,340 --> 00:01:11,560 Heating pıd mode. 11 12 00:01:11,660 --> 00:01:12,620 What was it. 12 13 00:01:12,620 --> 00:01:22,640 Control mode mode was 4 temperature control which has been adjusted so we are not doing automatically 13 14 00:01:22,720 --> 00:01:26,970 PID control or automatically parameter adjusting. 14 15 00:01:27,020 --> 00:01:31,640 We are adapting our values with manuelly because of this. 15 16 00:01:31,700 --> 00:01:39,460 We are sending to 4 to D104 for heating PID mode and also for the cooling. 16 17 00:01:39,470 --> 00:01:47,870 We are adjusting our sampling time cooling KP and also cooling KI cooling output upper and lower 17 18 00:01:47,870 --> 00:01:49,510 limits in here. 18 19 00:01:49,640 --> 00:01:54,160 And also we are sending K4 to cooling PID mode. 19 20 00:01:54,170 --> 00:01:55,310 We are adjusting. 20 21 00:01:55,310 --> 00:01:58,400 Same thing to for cooling. 21 22 00:01:58,400 --> 00:02:07,820 So what we did we adopted our parameters manually we adjusted sampling time KP KI and upper and lower 22 23 00:02:07,820 --> 00:02:17,930 limits and now with the m0 always on contact PID start contact in here you can see when this contact 23 24 00:02:17,960 --> 00:02:26,790 is high what will happen PID instruction is going to start set value is this is 24 25 00:02:26,850 --> 00:02:33,960 what you need to put here a value for example you want to adjust the room temperature is 30 degree. 25 26 00:02:34,190 --> 00:02:36,760 So you need to put it here and present value. 26 27 00:02:36,770 --> 00:02:43,930 You will read it from here for example from your thermocouple sensor you are reading it as 20 degrees. 27 28 00:02:44,090 --> 00:02:52,760 So heating sampling time PID is going to take a sampling times in this sampling times it will work it will 28 29 00:02:53,060 --> 00:02:58,530 process and it will give a result to d30 with this result. 29 30 00:02:58,530 --> 00:03:07,990 D30 will be increase and decrease this value and with the D106 heating output upper limit. 30 31 00:03:08,090 --> 00:03:16,790 So where it comes from, from here for the heating and it is going to give to output to Y10 also for 31 32 00:03:16,790 --> 00:03:18,740 the cooling you will select. 32 33 00:03:18,740 --> 00:03:19,330 Okay. 33 34 00:03:19,460 --> 00:03:25,110 I want zero degree in my room now it is 10 degree 34 35 00:03:25,310 --> 00:03:29,300 So from the d150 35 36 00:03:29,350 --> 00:03:37,670 It is coming from here sampling time is similar 300 and it will give a value to d31 this is 36 37 00:03:37,670 --> 00:03:45,560 cooling output value and according to this value and according to your upper limit D156 37 38 00:03:45,560 --> 00:03:54,710 this GPWM instruction will activate Y11 output of your plc 38 39 00:03:54,890 --> 00:03:56,010 So what will happen. 39 40 00:03:56,120 --> 00:04:04,280 It will activate these outputs according to your PID values and PID parameters and it will for example 40 41 00:04:04,280 --> 00:04:14,360 Y10 will be active 5 second and then it will active to 4 second what is our idea or what is our 41 42 00:04:17,440 --> 00:04:20,710 target so PID works like this. 42 43 00:04:20,710 --> 00:04:22,750 First of all this is our scheme. 43 44 00:04:22,750 --> 00:04:25,890 This is our set value. 44 45 00:04:25,900 --> 00:04:33,790 And if you activate this Y10 and or Y11 it will work like this for example it will start from 45 46 00:04:33,790 --> 00:04:34,640 here. 46 47 00:04:34,690 --> 00:04:42,460 It will go like this or like this or like this but always it will be a little bit longer active or a 47 48 00:04:42,460 --> 00:04:44,050 little bit less active. 48 49 00:04:44,050 --> 00:04:47,680 So for the set value it will work a lot. 49 50 00:04:47,680 --> 00:04:51,010 It will be opened and closed and open and close 50 51 00:04:51,310 --> 00:04:57,800 But for PID control it will go just one and two and three. 51 52 00:04:57,820 --> 00:05:02,200 A little bit more and then it will reach your set value always. 52 53 00:05:02,410 --> 00:05:07,660 It will open and close open and close open and close and it will be stable. 53 54 00:05:07,660 --> 00:05:15,760 This is what PID do and why we are using this PID instruction or why this is really important to 54 55 00:05:16,150 --> 00:05:25,570 make stable your outputs to give outputs correctly and without activate your outputs a long time(a lot) 55 56 00:05:25,570 --> 00:05:29,160 longer or less. 56 57 00:05:29,170 --> 00:05:32,590 You can use this PID instruction with like this. 57 58 00:05:32,590 --> 00:05:42,570 You can adopt them all with automatically to activate control mode as 3 or you can put your variables 58 59 00:05:42,810 --> 00:05:46,000 put your parameters to some data registers. 59 60 00:05:46,000 --> 00:05:53,690 But don't forget because of the power cut/power off and power on you can use to remain data registers. 60 61 00:05:53,690 --> 00:06:01,950 Then you can use as control mode as 4 and then you can use this command for the heating and for 61 62 00:06:01,950 --> 00:06:09,190 the cooling then you can work with the PID instructions with like this for this video. 62 63 00:06:09,300 --> 00:06:10,320 I'm finished here. 63 64 00:06:10,320 --> 00:06:11,760 See you in the next video.