28-03-2011, 03:06 PM
[attachment=11173]
Automatic bottle filling system using PLC
About PLC
• Definition
• Basic Block Diagram
• Features
• Language Used
PLC Definition
Digital electronics device that use programmable memory to store instruction & to implement specific functions such as logic, sequence, timing, counting arithematic etc to control the m/c & process.
Features of PLC
• It is field programmable by the user.
• Centralized system, modular
• It contains program function like logic timing , counting, arithmetic etc.
• It provides checking in a diagnostic manner.
• It scan memory, input, output in a deterministic manner.
• It can be monitored.
Language used for PLC Programming
• Ladder
• Functional Block Diagram
• Statement List
Ladder
The diagram look like a ladder in a way so is called ladder diagram
• Functional Block Diagram
I0.1
• Statement List
A I 0.1
A I 0.2
= Q 4.1
• Schematic Diagram of Temperature And Level Control System
• Actual Hardware of the Project
Components / Instruments used
• PLC
• Program Loader/ Monitor
• DC Motor
• Transformer
• Relay
• Pump
• Photoelectric Sensor
• Switch
• Indicator
• Thermostat
• Push button
• Solenoid Valve
• Heater and stirrer
• Rectifier
PLC
Specifications:
• Make : Siemens
• Model: S7 300
• Digital Input : 16
• Digital Output : 16
• Analog Input : 4
• Analog Output : 4
DC Motor
Output Power:12 Watt
Nominal Voltage:12 & 24 Volt
Nominal Speed up to:4500 rpm
Transformer
Step Down Transformer
Primary 230 v ac
Secondary 0-24 v ac 750 mA
Relay
A relay is an electrical switch that opens and closes under the control of another electrical circuit
Pump
Submersible Pump
Specification:
Make : China
Model: JUGNU HJ- 901
Voltage : 165- 250V/ 50 Hz
Power : 12 w
Output: 800L/H
Photoelectric Sensor
• Model CP18D1BAD2,
• Make : Honeywell
• Scan Distance 100 mm
• Supply voltage : 0 to 30 v dc
• Current consumption <20 mA
Switch
Two types: Momentary Push Button
Maintained Push Button
Indicator
• 24 V dc
Conveyor Arrangement
• Thermostat
Rectifier
Used for operation of DC motor for conveyor
Operation Sequence
• By pressing ‘Start’ push button,the process will start.
• The sensor 1 will indicate low temperature.this will increase until the high level sensor will senses.
• Then the process fluid is filled in the reservoir /process vessel with the help of inlet pump.
• Then the sensor 2 will indicate the high level.The pump is stopped when the high level sensor is sensed.
• At that time heater and stirring system will start working provided thermostat indicate low temperature.
• When the fluid temperature is increased to the high limit,the thermostat will sense it and cut off the system.
• After thermostat senses the high temperature,the outlet of the solenoid valve is on.
• After releasing all the water from the process vessel through the solenoid valve,the same process will repeat continuosly until it is not stop by ‘stop’ switch.
• Fluid inlet,low level of the fluid,high level of the fluid,switching on of heater and fan,thermostat low temperature,fluid outlet indications are given in the announciation panel
Conclusion
• Progamming Logic Controller is an multiloop control system intensively used in Automotive Industries.
• It reduces the manpower and increase the smoothness of the operation.
• It improves the quality of the product.
• Control the process parameter with better accuracy.
Problem Faced
• To set the pointer of the level indication system properly.
• To connect the dc motor with the fan or stirrer.
• Switching time of thermostat
• To maintain the thermostat at certain cut off temperature limit.
Future Work
• A limit switch
• Automatic pick up of bottle after filling up it.
• Lids to be fixed on the mouth of the bottle.
• Automatic labeling of bottle.
Automatic bottle filling system using PLC
About PLC
• Definition
• Basic Block Diagram
• Features
• Language Used
PLC Definition
Digital electronics device that use programmable memory to store instruction & to implement specific functions such as logic, sequence, timing, counting arithematic etc to control the m/c & process.
Features of PLC
• It is field programmable by the user.
• Centralized system, modular
• It contains program function like logic timing , counting, arithmetic etc.
• It provides checking in a diagnostic manner.
• It scan memory, input, output in a deterministic manner.
• It can be monitored.
Language used for PLC Programming
• Ladder
• Functional Block Diagram
• Statement List
Ladder
The diagram look like a ladder in a way so is called ladder diagram
• Functional Block Diagram
I0.1
• Statement List
A I 0.1
A I 0.2
= Q 4.1
• Schematic Diagram of Temperature And Level Control System
• Actual Hardware of the Project
Components / Instruments used
• PLC
• Program Loader/ Monitor
• DC Motor
• Transformer
• Relay
• Pump
• Photoelectric Sensor
• Switch
• Indicator
• Thermostat
• Push button
• Solenoid Valve
• Heater and stirrer
• Rectifier
PLC
Specifications:
• Make : Siemens
• Model: S7 300
• Digital Input : 16
• Digital Output : 16
• Analog Input : 4
• Analog Output : 4
DC Motor
Output Power:12 Watt
Nominal Voltage:12 & 24 Volt
Nominal Speed up to:4500 rpm
Transformer
Step Down Transformer
Primary 230 v ac
Secondary 0-24 v ac 750 mA
Relay
A relay is an electrical switch that opens and closes under the control of another electrical circuit
Pump
Submersible Pump
Specification:
Make : China
Model: JUGNU HJ- 901
Voltage : 165- 250V/ 50 Hz
Power : 12 w
Output: 800L/H
Photoelectric Sensor
• Model CP18D1BAD2,
• Make : Honeywell
• Scan Distance 100 mm
• Supply voltage : 0 to 30 v dc
• Current consumption <20 mA
Switch
Two types: Momentary Push Button
Maintained Push Button
Indicator
• 24 V dc
Conveyor Arrangement
• Thermostat
Rectifier
Used for operation of DC motor for conveyor
Operation Sequence
• By pressing ‘Start’ push button,the process will start.
• The sensor 1 will indicate low temperature.this will increase until the high level sensor will senses.
• Then the process fluid is filled in the reservoir /process vessel with the help of inlet pump.
• Then the sensor 2 will indicate the high level.The pump is stopped when the high level sensor is sensed.
• At that time heater and stirring system will start working provided thermostat indicate low temperature.
• When the fluid temperature is increased to the high limit,the thermostat will sense it and cut off the system.
• After thermostat senses the high temperature,the outlet of the solenoid valve is on.
• After releasing all the water from the process vessel through the solenoid valve,the same process will repeat continuosly until it is not stop by ‘stop’ switch.
• Fluid inlet,low level of the fluid,high level of the fluid,switching on of heater and fan,thermostat low temperature,fluid outlet indications are given in the announciation panel
Conclusion
• Progamming Logic Controller is an multiloop control system intensively used in Automotive Industries.
• It reduces the manpower and increase the smoothness of the operation.
• It improves the quality of the product.
• Control the process parameter with better accuracy.
Problem Faced
• To set the pointer of the level indication system properly.
• To connect the dc motor with the fan or stirrer.
• Switching time of thermostat
• To maintain the thermostat at certain cut off temperature limit.
Future Work
• A limit switch
• Automatic pick up of bottle after filling up it.
• Lids to be fixed on the mouth of the bottle.
• Automatic labeling of bottle.