EN. MUHAMAD NABIL BIN MANSOR

pengenalan

Sejarah PLC

Apa itu PLC?

Litar kawalan relay

Relay

Panel Kawalan

Sistem Relay

Litar kawalan relay

Panel Kawalan Sistem Relay

Relay terminal

Litar kawalan relay

Litar Kawalan Relay

Gantian kepada Relay

Simbol Contact

Simbol Coil

Gantian kepada Relay

PLC

Relays

Timers & Counters

Gantian kepada Relay

Litar Kawalan

Relay

Rajah Tetangga

Gantian kepada Relay

Kendalian Data

2

1

3 4

5

Prod Pass Reject

AA 33 4

BB 27 3

CC 43 8

PLC

Operasi Aritmetik

+

-

x

/

Isyarat Analog

Kelebihan Menggunakan PLC

Kelebihan Menggunakan PLC

PLC vs. Relay

When I first started programming PLCs it was still questionable if a PLC was

necessary over just relay control. With PLC prices going down, size shrinking, and

performance of PLCs improving over the years this has become less of a battle. Yet

the designer has to ask themselves if a PLC is really overkill for their application.

Some questions should be asked.

Is there a need for flexibility in control logic changes? Will there be frequent

control logic changes? Will there be a need for rapid modification?

A lot companies believe they will never change a design but more often then not

ideas and goals do change and modifications will need to be made. Do you want to

do that in hardware (relays) or software (PLC)?

Must similar control logic be used on different machines?

It's so much easier to download a program then build another panel.

PLC vs. Relay

Is there a need for future growth?

A PLC can easily accept a new module in a slot or get an expansion base.

Is there a need for high reliability?

PLCs are seen as more robust over indiidual components.

Is downtime a concern?

Any change or troubleshooting on a relay system means the system might have to

go offline. Changes in a PLC can often be made online with no downtime.

Are space requirements important?

Based on the number of relays a PLC can be a real space saver.

Are increased capability and output required?

PLCs can be faster then their mechanical counterparts.

Are there data collection and communications required?

Only possible with a PLC or computer.

What are the overall costs?

There's a certain price

PLC vs. Dedicated Controller

A dedicated controller is a single instrument that is dedicated to controlling one parameter such as a PID controller measuring a temperature for heating control. They have the advantages of an all in one package, typically with display and buttons. This can be a very good thing to use in simple applications. A PLC these days can compete price wise and functionally with these controllers especially if more than one controller is needed. PLCs offer a greater degree of flexibility too because the can be programmed to handle all sorts of different scenarios.

PLC vs. PC (Personal Computers)

The PLC vs. PC debate has been going on for years and I'm not going to

attempt to give the definitive answer. They both have their pros and cons. What

often happens is that the two are used for their strengths in different parts of

the factory.

PLC vs. PC (Personal Computers)

PLC vs. PC (Personal Computers)

Pengeluar PLC

Pengeluar PLC

Jenis-jenis PLC

Nano Brick Style

Expandable to 44 I/O

Low Cost Model 20 I/O

max

ZEN

Compact PLC Series

CP1H CPM1A CPM2A

CPM2B CPM2C

The all in one PLC Compact & economical The universal small

machine controller

Brick Style Micro

Controller Board Package

The versatile slim-line

controller

Modular PLC Series

CQM1H

The original backplane-less

modular PLC

CJ1

The entry-level modular PLC

with a big potential

Rack PLC Series

CS1

Suitable for any job: the

rack-based PLC with over

200 types of I/O units

CS1D

The dual-redundant PLC

system for never-fail control

Bagaimana Memilih PLC

Bagaimana Memilih PLC

Apa yang boleh PLC lakukan

Apa yang boleh PLC lakukan

Flow Rate

Float Level

Oxygen Level

Apa yang boleh PLC lakukan

Motor pump

Valve

Mixer