Electrical and Electronic Control

Running head: ELECTRICAL AND ELECTRONIC CONTROL
ELECTRICAL AND ELECTRONIC CONTROL
Name of Student
Institution Affiliation

ELECTRICAL AND ELECTRONIC CONTROL 2
TASK 1
Part a
Unitary
This type of PLC can be employed for any application which does not need several inputs and
outputs. For instance barrier in a car park (Moghe, 2016). This wouldn’t require several
inputs/output and would only need a simple program.
Modular
In this type of PLC, several inputs and outputs are used since more output/inputs can be added if
there is a need. This type of PLC is most applied in the manufacturing industry to help control
the process lines (Jamakar, 2015).
Rack-mounted programmable controller
This type of PLC is widely applied in the manufacturing industry. This is because of the
outputs/ inputs which the system can have but also due to its ability to communicate with another
network.
Part b
Unitary
Unitary PLC has a block diagram which is illustrated by the following diagram.

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Figure 1: Showing the block diagram of the unitary PLC type(Jamakar, 2015).
Some of the specific requirement for this type of PLC is given below;
 It has a single output module.
 It also has a single input module.
 Unitary PLC has a power supply.
 It has its main module which has a Central Processing Unit (CPU).

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As discussed above, this type of PLC is used in car parking, therefore this type of application is
selected for this application since in car parking there are no several processes which need to be
controlled, and it is just one process which needs to be controlled (Vogel-Heuser, 2018).
Modular
For the modular type of PLC the block diagram is illustrated as below;
Figure 2: Showing a block diagram of Modular PLC (Jamakar, 2015).
The specific requirement for the modular type of PLC is illustrated below;
 There are several input modules.
 There is a power supply.
 There are several output modules.

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 Its main module is the CPU.
For this type of PLC, there are attached to some extra output and input modules which increases
the capacity or even to cope with changes in the hardware system of this type of PLC
(Gutermuth, 2015).
This PLC finds its application in the manufacturing industry since there are several processes
which need to be coordinated therefore Modular is employed to control and coordinate those
process (several inputs / several outputs).
Rack-mounted programmable controller
Figure 3: Showing a block diagram of Rack mounted (Gutermuth, 2015).
The specific requirement for this type of PLC is the ability to communicate with another system.
Therefore this PLC best suitable application since in the manufacturing industry there are a lot of

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communications and coordination hence a lot of communications are required (Gençoğlan,
2016).
TASK 2
The system hardware of the modern PLC system can be illustrated using the following diagram;
Figure 4: Showing the architecture of modern PLC (Gutermuth, 2015).