belt weigh feeder short presentation by shubham saxena

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BELT WEIGH FEEDER CUS TO M I SED FE R T I L IZER TATA C H EMI C AL S LTD. BAB R ALA 06/08 /2022 1 By-shubham saxena T.C.L Babrala 08273170864

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Page 1: Belt Weigh feeder short presentation By Shubham saxena

05/02/2023

BELT WEIGH FE

EDER

C U S T O MI S E D F E R T I L I Z E R T

A T A CH E M

I C A L S LT D .

B A B R A L A

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By-shubham saxenaT.C.L

Babrala08273170864

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ABOUT WEIGH FEEDER- The Weigh Belt Feeder is a

relatively simple, extremely reliable gravimetric feeder providing high feeding precision and efficient process monitoring.

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Weigh Belt Feeder Principle of Operation--In a weigh belt feeder, product is feed as a continuous band onto

a conveyor belt, through an inlet slide gate or automatic pre-feeder. A load sensor under the belt continuously measures the weight of the product over a defined length of belt. The controller continuously compares the actual weight with the set point weight, and automatically adjusts the motor speed to either increase or decrease belt speed, in order to maintain a constant federate. Any variation in the density of the material is reflected as a change in belt loading, which is compensated for by adjusting the belt speed. Weigh-belt feeders can be positioned directly beneath a silo, making them suitable extraction devices for foodstuffs, animal feed, detergents and plastic pellets. The ideal inlet gate has an adjustable width, so that the profile (and thus the volume) of the material being discharged can be varied to meet the needs of the application.For inventory control or metering, the Smart Weigh Belt can be placed into a constant speed configuration to measure or totalize the amount fed into a process.

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THERE ARE FOUR ESSENTIAL COMPONENTS TO ANY CONVEYOR BELT SCALE.

1-Weigh Bridge2-Speed Sensor3-Integrator4-Conveyor

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Weigh bridge operation Strain gauge theory

A thin wire is coiled so that as the metal it is attached to is stretched the wire is made longer and thinner

The electrical resistance of the wire is related to the cross-sectional area of the wire

The change in resistance is proportional to the amount the load cell metal is flexed

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Weight

Weigh bridge operation Load cell theory

Load cells are steel frames with strain gauges mounted at points where the load cell is designed to flex

The parallelogram load cell is designed for parallel sides to stay parallel and only vertical forces are measured

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Speed sensor operation

Shaft mounted speed sensor A slotted disk rotates through

an optical encoder The slotted disk breaks the

encoder light beam to produce an output pulse proportional to the speed of the shaft rotation

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SPEED SENSOR-

Shaft Mounted Speed Sensors

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Trailing Arm Speed Sensors Speed sensor operation

Trailing arm speed sensor A gear rotates near a proximity

switch

As the teeth of the gear pass the proximity switch a pulse is generated

The output pulse is proportional

to the speed of the belt

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Integrator operation

Material Load (lbs/ft) Belt Travel

Belt Speed Sensor

RateLoadSpeedTotal

Integrator operation Receives material load information

from the weigh bridge Receives belt speed information

from the belt speed sensor Provides HMI information

Rate Load Speed Total

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Belt Speed Sensor

Belt Travel

Material Load (lbs/ft) Integrator operation

The design of all belt scales is based on the formula

LOAD X SPEED = RATE Load units are in lbs / ft. Speed units are in ft. / minute

Pounds Feet Pounds Foot Minute Minute

X =

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Belt Speed Sensor

Belt Travel

Material Load (lbs/ft)

Integrator operation The design of all belt scales is

based on the formulaLOAD X SPEED =

RATE Load units are in lbs / ft. Speed units are in ft. / minute

Pounds Feet Pounds

Foot Minute Minute

X =

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Tail Pully Belt adjuster

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18Ideale

r

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SCM II + KSUT E C H N I C A L D E S C R I P T I O N

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SCHEDULE

SCMII hardware descriptionOverview Aux. board / CPU boardCommunications

ConnectionsLON / Input Output

KSU hardware descriptionExamples of applicationsKSU Menu (maintenance)

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SCM => HARDWARE

2 versions :

SCM =SmartControlModule

« Panel »« On board » or «

Field »Working Temperature :

-20 to 60 ºCMaximum moisture :

95 % without condensationProtection :

IP 65 

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SCM II OVERVIEW

“Panel” version…

With connection module “A2”

CPUBoard

Aux. Board

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SCM => HARDWARE => CASE

The case

Backplane

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SCM => HARDWARE =>AUX. BOARD

Supply board and interfaces I/O or « Auxiliary Board » (Aux. Board )

Common board to all SCMs, 110 or 230V AC

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SCM => HARDWARE =>AUX. BOARD

Supply part

Overvoltage protections

275 V

Supply fuses2 x 250V 250mA T

Voltage supply selector

115 / 230

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SCM => HARDWARE =>AUX. BOARD

CONFIGURATION part

J1 Analogue OutputPos.0 = voltage 0-10V

(picture)Pos.1 = supply 4-20mA

Selector S1 :1 = ON2,3, = OFF4 :Input ANA 4-20mAOFF => floatON => weighing(continuous weighing

application)

1234

OFF

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SCM => HARDWARE =>AUX. BOARD

VISUALISATION part 1

SCM on

Blinking 1Hz = Interface I/O OK

Controller excessive temperature

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SCM => HARDWARE =>AUX. BOARD

VISUALISATION Part 2

Status of the 11 Inputs

OFF = Inactive InputON = Active Input

Status of the 4 Outputs

OFF = Inactive Output

ON = Active Output

3 Inputs Intended to the

weighbeltfeeder application

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SCM => HARDWARE =>AUX. BOARD

CONNECTION Part X1 Load cell connection

DB15f to A2 module

PC connection DB9m diagnostic port

X2 LON connectionDB9f to A2

module

X3 I/O connectionDB37f to A2

module

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SCM => HARDWARE => CPU BOARD

« C.P.U. »Processor board

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SCM => HARDWARE => CPU BOARD

CONFIGURATION Part 1

Jumper JU4 :ON = battery on (picture)OFF = batterry off (spare

part)

Jumper JU3 :NORM = active RAMCLR = erasing RAM

To be respected imperatively!!!

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SCM => HARDWARE =>CPU BOARD

CONFIGURATION Part 2

SW1 Switch :Reset CPU

SW2 Selectors :1 = OFF => Normal1 = ON => Test

machines2,3,4= OFF 1

234

OFF

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SCM => HARDWARE => CPU BOARD

VISUALISATION Part CPU : blinking 1Hz =

OKFast = InitialisatingCPU : Blinking = OUT

LON : blinking 1Hz = MASTER mode

LON : working

CPU : ON = RESET

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SCM => HARDWARE => CPU

Partie CONNECTIQUE

Connection for supervision communication

Connection for BIOS download

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EXTERNAL LON INPUT / OUTPUT INTERFACE

LON-Bus-coupler

2 Channel Ana In

2 Channel Relay Out

2 Channel Ana Out

End Terminal

Lon Connection

24 V DC Power supply

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BY- Shubham Saxena