Skip to main content

Belajar Dasar SCADA

Post a Comment

Ladder Program Example for Lifter Application

Ladder Program Example for Lifter Application



Ladder Program to carry parts to three positions using the lift.



Control Specifications


The following operation should be performed in this unit.

Study the required specifications and then create the program and confirm the operation


Overall control


  • When [PB1] (X20) on the operation panel is pressed, Supply command(Y0) for the hopper is turned ON.When [PB1] (X20) is released, Supply command (Y0) is turned OFF. When Supply command (Y0) is turned ON, the hopper supplies a part.
  • When [SW1] (X24) on the operation panel is turned ON, the conveyors move forward. When [SW1] (X24) is turned OFF, the conveyors stop.
  • After the sensor X10, X12or X14 at the left of conveyor has detected a part, the corresponding conveyor is set ON and carries it to the tray at the right end.The conveyor stops 3seconds after a part has passed the sensor X11, X13 or X15at the right of conveyor.
  • Large, medium and small parts on the conveyor are sorted by the input of sensors Upper (X0), Middle(X1) and Lower (X2).

·       

Lift Control


    1)       When the sensor for Part on lift (X3) in the lift is turned ON, a part is carried to either of the following conveyors according to its size.

  • Large part: Upper conveyor
  • Medium part: Medium conveyor
  • Small part: Lower conveyor


     2)       Lift up command (Y2) and Lift down command(Y3) are controlled according to the lift position detected by the following sensors.

  • Upper: X6
  • Meddle: X5
  • Lower: X4


     3)       When a part is transferred from the lift to the conveyor, Lift rotation command (Y4) is set ON. 


     4)       After a part is transferred, the lift is to return to the initial position and stand by.


Ladder Program Description:

In this exercise, the size of parts carried on the conveyor is to be sorted using three sensors shown on the table.


Part size
Upper (X0)
Medium (X1)
Lower (X2)
Large
ON
ON
ON
Medium
OFF
ON
ON
Small
OFF
OFF
ON

The lift stop position is determined based on the input status of the position sensors X4to X6.

When distributing a small part, the lift does not move vertically. Only the rotation of the lift 
should be controlled in the initial position.


·         Turn ON [SW1] (X24) on the operation panel.

Result >>The conveyor moves to the right.


·         Press [PB1] (X20) on the operation panel.

Result >>A part is supplied from the hopper.


·         Operation of the lift

Result >>When a large or medium part is put on the lift, the lift moves up to the upper or middle conveyor and stops. When a small part is put on the lift, the lift remains in the initial position

·         Transfer of a part


Result >>After the lift rotates and a part is transferred to the conveyor, the conveyor moves to the right and the part is carried to the tray.

·         Return of the lift


Result >>The lift with no part returns to the initial position and stops there.

·         Repeated operation


When [PB1] (X20) is pressed, the operations starting from 2 are repeated.







http://news.chivindo.com/813/ladder-program-example-for-lifter-application.html

Comments

Post a Comment

Popular posts from this blog

Augmented and mixed reality: what is it, and where is it going?

XR is a term that has become more prominent in the last few years. It encapsulates virtual, augmented, and mixed reality topics. The definition of each of these has become saturated in the past decade, with companies using their own definitions for each to describe their products. The new IDTechEx Report, “Augmented, Mixed and Virtual Reality 2020-2030” , distils this range of terms and products, compares the technologies used in them, and produces a forecast for the market next decade. This premium article discusses AR (augmented reality) and MR (mixed reality) in more detail. The report discusses 83 different companies and 175 products in VR (virtual reality), AR (augmented reality) and MR (mixed reality) markets. This promotional article specifically discusses the findings from this report of the augmented and mixed reality markets. Augmented Reality (AR) and Mixed Reality (MR) are two technologies which have become more prominent in the past ten years. AR is the use...
Post a Comment
Read more

Nitro Pro Enterprise 13.19.2.356 Full Version

BAGAS31 – Nitro Pro Enterprise 13.19.2.356 Full Version adalah sebuah software dari Nitro Software yang berguna untuk membuat, melakukan convert, mengedit, dan melakukan share file PDF yang kamu miliki. Nitro Pro Enterprise   merupakan salah satu software untuk urusan PDF yang cukup populer saat ini dan memang sudah diakui kredibilitasnya, bahkan software ini pun digunakan untuk urusan pekerjaan oleh para professional. Versi Enterprise ini tentu saja memiliki fitur-fitur yang lebih banyak dan lebih lengkap dari versi biasa atau versi free nya. Di versi terbarunya ini, terdapat beberapa update dan tambahan, serta perbaikan bugs guna mengoptimalkan software ini sendiri. So, buat kamu yang membutuhkan software ini, langsung saja download melalui link di bawah. Screenshot : Download : Nitro Pro Enterprise 13.19.2.356 Full Version (32-Bit ) [ Zippyshare ] [ FileUp ] [ Mirrorcreator ] Nitro Pro Enterprise 13.19.2.356 Full Version (64-Bit ) [ Zippyshare ] [ Fi...
Post a Comment
Read more

What is Active,Reactive and Apparent Power?

Active Power The power drawn by the load to do work is called the True power or Active power or real power. When electrical energy is fed to load the electrical energy gets converted into other forms of energy like thermal,mechnaical or chemical. Thus, the power actually consumed by electrical load is called the active power. A heater rated 220 volts, 400 watts consumes 400 watts when 220 volts is applied to its resistance element.The 400 watts power consumed by heater is the real power or active power. The active power is measured in kilo watt(kW) or MW. To calculate active power, the current flowing in phase with applied voltage is calculated.  The product of the voltage and the current in phase with the voltage gives the real power or active power.  Reactive Power The power which flows from the source to load and load to source is called the reactive energy. The reactive energy flows in both the direction. The reactive power is measured in kilo volts ampere reactive(kVAR) o...
Post a Comment
Read more