This document describes a PLC-based automatic bottle filling system that fills bottles simultaneously using sensors and valves. The system uses a programmable logic controller and proximity sensors to detect bottles on a conveyor belt. When a bottle is sensed, the corresponding pump switches on to fill the bottle based on a preset timer value. Once filled, the conveyor moves the bottles to the capping station. The entire process is controlled using a Delta PLC programmed with ladder logic. The system allows for automatic and simultaneous filling of multiple bottles to improve efficiency over traditional single-bottle filling methods.

1. PLC BASED AUTOMATIC
BOTTLE FILLING SYSTEM.
170060021
170060039
170060090

2. INTRODUCTION:
• Filling is a task carried out by a machine that packages liquid
products such as cold drinks or water. Traditional methods of
bottle filling involved placing bottles onto a conveyor and filling
only one bottle at a time.
• This paper aims at filling bottles simultaneously.
• The filling and capping operation takes place in a
synchronized manner
• The entire system is more flexible and time saving.

3. • The filling operations are controlled using Programmable Logic
Controllers.
• This is because PLC’s are very flexible, cost effective, space
efficient and reduces complexity.
• By programming the PLC we control the entire system.
• Here we are using Delta plc.
• Software used is WPL Soft.

4. KEY WORDS:
• PLC,.
• Sensors,
• Valve,
• Dc Motor,
• Programming Language( Ladder Diagram)
• Addressing Of Delta Plc .

5. WORKING:
• To develop an automatic bottle, filling and capping system with
a deduction mechanism using sensors. Automatic filling process
for all the bottles simultaneously with a user defined selection
for volume to be filled.
• Bottles are kept in position in a carton over a conveyor belt; they
are sensed to detect their presence. Proximity sensors are used
for sensing the bottles. Depending on the output of the sensor
the corresponding pumps switch on and filling operation takes
place.
• If the bottle is not present then the pump in that position is
switched off, thereby avoiding wastage of the liquid. The filling
operation is accompanied with a user-defined volume selection
menu which enables the user to choose the volume of liquid to

6. • The filling process is done based on timing. Depending on the
preset value of the timer the pump is switched on for that
particular period of time and the filling is done.

7. • Once the bottles are detected in the input side the conveyor
motor switches ON and it starts moving in the forward direction.
The bottles then reach the desired position for filling and the
conveyor stops. The corresponding pumps in process tank
switch ON and filling operation takes place. For e.g. if only
bottle is present then inlet valve switches ON.

8. SENSORS (PROXIMITY SENSORS)
• Proximity sensor is
a sensor that are used to
detect the presence of nearby
objects without coming in
physical contact.
Inductive sensor creates a
symmetrical, oscillating
magnetic field close to
the sensing surface. Presence
of metallic object
near sensing area causes the

9. INLET VALUE:
• The valve through which a
fluid is drawn into the
cylinder of a positive-
displacement engine, pump,
or compressor. Also known
as induction valve.

10. SYSTEM DETAILS
Conveyor system
with motor for
movement of
bottle.
Proximity sensor
for sensing
bottle positions.
Liquid filling
Operation.
Bottle count
operation
Inlet valve for
control of liquid
filling.
Digital Input- 4
no.
Digital Output- 3
no.
PLC with DI/DO
Configurations.

11. PLC USED
DELTA PLC IS USED HERE.

12. CONCLUSION:
The main objective of this paper is to develop a
bottle filling system based on certain
specifications.
1
More features can be added to this system as
follows: Depending on the size, shape and
weight of the bottles, Filling operations can be
implemented. Capping operation can be done
using a piston arrangement.
2

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