May 28, 2018
Types of automation topologies & Components of automation
· Hardwired relay logic
· Dedicated card control
· PLC based automation
· DCS based automation.
· PC based automation.
Components of automation.
· Sensor (RTD, TC, Proximity switches, Flow sensors etc.)
· Transmitter and/or switch (TT, PT, FT, pH Transmitter etc.)
· Controller (PLC, DCS etc.)
· Actuators (Contactor, Relay, VFD, I/P Converter etc.)
· Final Control Elements (Motors, Heaters, Control Valves, conveyors etc.)
· Human Machine Interface (HMI)
· Supervisory control and data acquisition (SCADA)
· Panels, wiring and cabling
May 27, 2018
Configuration of SITRANS TH300 in SIMATIC Manager
Description:
SITRANS TH 300 with HART protocol is designed to support all common thermocouples, resistance and milli-volt sensors
Setup is quick and easy with SIMATIC PDM
Explanation:
In SITRANS TH300 there is various connections for the attach RTD and other devices
Main two connections is for positive and negative supply which passes 4-20mA current supply
We connect 250Ωresistor in series connection with the power supply
Its voltage picks up to 5V and it is connected with HART modem and we get signals in to controller with USB connection
There is 2-wire or 3-wire RTD sensor connected with the SITRANS TH300 which is used for temperature sensing element
Then connect the HART modem across the 250Ω resistor and USB port connect to the computer
With the help of SIMATIC Manager we measure the temperature of the device or other sensing elements with the use of SITRANS TH300
Schematic Diagram:
Configuration Steps:
Start SIMATIC manager
File > New project
View > Process device network view
Options > Set PG/PC interface > USB S785 B
Project > Insert new object > Network > Communication network > Assign device type > HART modem network
Comport interface > Communication
HART modem network > Insert object > Assign > Device identification
Right click on device > Open object > upload to PG/PC
Explosion proof transmissions can be installed and operated within potentially explosive atmosphere in compliance with the information given in the relevant certificates and approvals in operating instruction
The sensor activation and measuring range to be programmed
Intrinsically safe and non-sparking version for use in hazardous areas
Special characteristic curve given
By Harsh Suthar
Configuration of SITRANS TH300 in SIMATIC Manager
Description:
SITRANS TH 300 with HART protocol is designed to support all common thermocouples, resistance and milli-volt sensors
Setup is quick and easy with SIMATIC PDM
It works on DC voltage sources
Configuration of SITRANS P300 in SIMATIC Manager
Description:
It is a pressure measuring Instrument which is generally use for Absolute pressure measurement.
It can measure with accuracy ≤ 0.075%
It can work within limit of 1.3 bar pressure.
Silicon oil is used in Fluid filling in case in use of food industry edible oil is used because silicon is hazardous to human health.
Explanation:
First of all the mounting of instrument is done as per requirement.
When the pressure is applied in the valve of the instrument pressure is applied on Diaphragm so that it bends and piezoelectric plate is mounted on it.
When the piezoelectric plate bends the resistance is decrease in it so that when electric signal transmit on it difference can be shown on display that is measured pressure.
The readings in different units can be found using this instrument.
We can connect the equipment to the computer using PC/PD coupler and CP5711 via Profibus PA and Profibus PD can be analyzed on Simatic PDM.
Schematic Diagram:
Configuration Steps:
Connect SITRANS P 300 to PC via Profibus and PC\PD Coupler.
Set the parameters of SITRANS P 300 using Mode button
Open SIMATIC PDM
File > New Project
View > Process Device Network View
Options > Set PG\PC interface [Select CP5711 Profibus 1<active>]
Project > Insert new object > Networks
Networks> Insert new object > Communication network > assign device type <Profibus network>
In profibus network Give the address of instrument i.e. 1-126 any number and assign instrument SITRANS P300
Open device > Open Project <upload \download to PG\PC>
Observe the result in process variable.
Conclusion:
Proper Commissioning of Device leads to accurate pressure measurement.
Position and Place of mounting is should be proper to get accurate output.
For Safety of the plant and workers this instrument is necessary.
We can conclude that by using this instrument we can maintain the pressure by setting higher and lower limit in equipment such as boiler, pressure vessel etc. and proper safety measures can be achieved.
By Kartik Pandav
May 19, 2018
Latching Cercuit (Controlling The motor by pressing Start Stop Button)
Latching Cercuit (Controlling The motor by pressing Start Stop Button)
Explaination:-
Press Start button and Motor will be on.
The action can be Practised by the Latching Cercuit which keeps the motor in running condition even if the start button is not Pressed.
When Stop Button will be Pressed then Motor will be off.
Program:- Write the ladder Logic for Above application.
Input List:
START-I0.0
STOP-I0.1
Output List:
Motor -Q0.0
Latching Cercuit (Controlling The motor by pressing Start Stop Button)
Latching Cercuit (Controlling The motor by pressing Start Stop Button)
Explaination:-
Press Start button and Motor will be on.
The action can be Practised by the Latching Cercuit which keeps the motor in running condition even if the start button is not Pressed.
When Stop Button will be Pressed then Motor will be off.
Program:- Write the ladder Logic for Above application.
Input List:
START-I0.0
STOP-I0.1
Output List:
Motor -Q0.0
AND & OR Gate Opertion in Ladder language
AND & OR Gate Opertion in Ladder language
Explanation:-
Here we have 4 switches and two lamps and we will do two diffrents tasks1.Connect SW 1 and & SW 2 in series Connection and turn on the lamp 1
in this case we have to turn on both switch
2.Connect SW 3& SW 4 in Parallel Connection and turn on Lamp
in this connection we need to turn on either SW3 or SW4 to turn on the Lamp 2.
Program:- Write the ladder Logic for Above application.
Input List:
SW1-I0.0
SW2-I0.1
SW3-I0.2
SW4 -I0.3
Output List:
Lamp 1 -Q0.0
Lamp 2 -Q0.1
Lamp 2 -Q0.1
AND & OR Gate Opertion in Ladder language
AND & OR Gate Opertion in Ladder language
Explanation:-
Here we have 4 switches and two lamps and we will do two diffrents tasks1.Connect SW 1 and & SW 2 in series Connection and turn on the lamp 1
in this case we have to turn on both switch
2.Connect SW 3& SW 4 in Parallel Connection and turn on Lamp
in this connection we need to turn on either SW3 or SW4 to turn on the Lamp 2.
Program:- Write the ladder Logic for Above application.
Input List:
SW1-I0.0
SW2-I0.1
SW3-I0.2
SW4 -I0.3
Output List:
Lamp 1 -Q0.0
Lamp 2 -Q0.1
Lamp 2 -Q0.1
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