Desktop project report course industrial automation

VIETNAM NATIONAL UNIVERSITY, HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY ---o0o--- DESKTOP PROJECT REPORT Course: Industrial Automation CLASS: TT01 INTRUCTOR: Dr.. Truong Dinh Chau HO

VIETNAM NATIONAL UNIVERSITY, HO CHI MINH CITY

UNIVERSITY OF TECHNOLOGY -o0o -

DESKTOP PROJECT REPORT Course: Industrial Automation

CLASS: TT01

INTRUCTOR: Dr Truong Dinh Chau

HO CHI MINH CITY, OCTOBER 2022

2

I.P&ID Diagram 3

II Working principle 3

III State diagram 4

IV Output table for M1_1, M1_2, M2_1, M2_2, V3_1, V3_2 and Agitator 4

V Code 5

3

I

The system consists of 2 tanks, in which Tank 1 is filled by pump M1_1 and M1_2, and Tank 2 is filled by pump M2_2 and M2_1 Two level sensors are installed on each tank to indicate maximum and minimum liquid level Valve V3_1 and V3_2 are used to drain Tank 2 The process is controlled by a PLC

II Workingprinciple

- When START is pressed, M1_1 pumps into Tank 1 After 10 seconds, M2_2 starts pumping until HI_1 is TRUE (Tank 1 is full)

- When HI_1 is TRUE, both M2_1 and M2_2 start pumping into Tank 2 until HI_2 is TRUE (Tank 2 is full)

- When HI_2 is TRUE, agitator starts mixing for 10s and turns off, then both V3_1 and V3_2 are opened to let the mixture out of Tank 2 until LO_2 is TRUE (Tank 2 is empty)

At the same time M1_1 and M2_2 also start refilling Tank 1 until it becomes full again, then stop

- When LO_2 is TRUE, V3_1 and V3_2 are closed, M2_1 and M2_2 start pumping into tank 2 again, and the process repeats itself

- The system stops at any state when the STOP button is pressed Pressing START after that will start the system at its initial state S0

4

III

S0: Initial state

S1: M1_1 is ON

S2: M1_1 and M1_2 are ON

S3: M1_1 and M1_2 are OFF, M2_1 and M2_2 are ON

S4: M2_1 and M2_2 are OFF, Agitator is ON

S5: Agitator is OFF, V3_1 and V3_2 are ON; M1_1 and M1_2 are ON until tank 1 is full

IV Output table for M1_1, M1_2, M2_1, M2_2, V3_1, V3_2 and Agitator

5

V

Code for main function block:

"T10s_1".TON(IN := "S1",

PT := T#10s);

"T10s_2".TON(IN := "S4",

PT := T#10s);

// TRANSITION EQUATIONS

"T00" := "FirstScan";

"T01" := "S0" AND "START";

"T12" := "S1" AND "T10s_1".Q;

"T13" := "S1" AND "HI_1";

"T23" := "S2" AND "HI_1";

"T31" := "S3" AND "LO_1";

"T34" := "S3" AND "HI_2";

"T45" := "S4" AND "T10s_2".Q;

"T53" := "S5" AND "LO_2";

"T10" := "S1" AND "STOP";

"T20" := "S2" AND "STOP";

"T30" := "S3" AND "STOP";

"T40" := "S4" AND "STOP";

"T50" := "S5" AND "STOP";

// STATE EQUATIONS

"S0" := ("S0" OR "T00" OR "T10" OR "T20" OR "T30" OR "T40" OR "T50") AND NOT "T01";

"S1" := ("S1" OR "T01" OR "T31") AND NOT "T12" AND NOT "T13" AND NOT

"T10";

"S2" := ("S2" OR "T12") AND NOT "T23" AND NOT "T20";

"S3" := ("S3" OR "T23" OR "T13"OR "T53") AND NOT "T34" AND NOT "T31" AND NOT "T30";

"S4" := ("S4" OR "T34") AND NOT "T45" AND NOT "T40";

"S5" := ("S5" OR "T45") AND NOT "T53" AND NOT "T50";

// OUTPUT EQUATIONS

"M1_1" := "S1" OR "S2" OR ("S5" AND NOT "HI_1");

"M1_2" := "S2" OR ("S5" AND NOT "HI_1");

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"M2_2" := "S3";

"AGITATOR" := "S4";

"V3_1" := "S5";

"V3_2" := "S5";

Code for water level simulation in tank 1:

"R_TRIG_DB"(CLK := "Clock_1Hz");

IF "M1_1" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_1" := "LEVEL_TANK_1" + 2;

IF "LEVEL_TANK_1" >= 100 THEN

"LEVEL_TANK_1" := 100;

END_IF;

END_IF;

IF "M1_2" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_1" := "LEVEL_TANK_1" + 2;

IF "LEVEL_TANK_1" >= 100 THEN

"LEVEL_TANK_1" := 100;

END_IF;

END_IF;

IF "M2_1" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_1" := "LEVEL_TANK_1" - 2;

IF "LEVEL_TANK_1" <= 0 THEN

"LEVEL_TANK_1" := 0;

END_IF;

END_IF;

IF "LEVEL_TANK_1" > 98 THEN

"HI_1" := TRUE;

ELSE

"HI_1" := FALSE;

END_IF;

IF "LEVEL_TANK_1" < 2 THEN

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ELSE

"LO_1" := FALSE;

END_IF;

Code for water level simulation in tank 2:

"R_TRIG_DB_1"(CLK := "Clock_1Hz");

IF "M2_1" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_2" := "LEVEL_TANK_2" + 2;

IF "LEVEL_TANK_2" >= 100 THEN

"LEVEL_TANK_2" := 100;

END_IF;

END_IF;

IF "M2_2" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_2" := "LEVEL_TANK_2" + 2;

IF "LEVEL_TANK_2" >= 100 THEN

"LEVEL_TANK_2" := 100;

END_IF;

END_IF;

IF "V3_1" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_2" := "LEVEL_TANK_2" - 3;

IF "LEVEL_TANK_2" <= 0 THEN

"LEVEL_TANK_2" := 0;

END_IF;

END_IF;

IF "V3_2" AND "R_TRIG_DB".Q THEN

"LEVEL_TANK_2" := "LEVEL_TANK_2" - 3;

IF "LEVEL_TANK_2" <= 0 THEN

"LEVEL_TANK_2" := 0;

END_IF;

END_IF;

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"HI_2" := TRUE;

ELSE

"HI_2" := FALSE;

END_IF;

IF "LEVEL_TANK_2" < 2 THEN

"LO_2" := TRUE;

ELSE

"LO_2" := FALSE;

END_IF;

Code for Agitator animation (FBD):

9

VI

Initial state, the START button is not pressed:

START button is pressed, M1_1 and M1_2 are ON:

When Tank 1 is full, M2_1 and M2_2 are ON:

10

When Tank 2 is full, AGITATOR is ON:

11

Tank 1: