As we got amazing feedback from the
other two videos about wiring diagrams we decided to continue this series So, we will check out another
real-world circuit diagram but this time from another perspective I will show you the structure of
a standard wiring diagram that belongs to a real-world
customized machine So, stay with me to the end as there are lots of crucial and very useful points to learn As this whole lengthy document is associated with a singular machine the designer has integrated
the wiring diagram along with several other sections in one single document These sections consist of how to assemble and dismantle the device bill of material maintenance instructions pneumatic circuits, and so on The wiring diagram section is between pages 292 to 598 and it seems impossible to dig into all the details in one single video So please subscribe and click the notification bell to don’t miss the next episodes Right after the cover sheet is the index of the wiring diagram that shows which page is allocated to what mechanism For example, you can find the wirings
of the “Elevator Sensors” on page 720 This page might not seem really important but there is an extremely
useful piece of data here about the wires' color code
of the electrical panel For instance, in this specific panel you can find and track 110 VAC wires in red color and 220-volt AC in Grey color There are also some general specifications
of the electrical panel control stations junction boxes and so on like their enclosure’s material color code Ingress protection rating etc On every page of the drawing you have to use two pieces of information frequently The first is the title of the page and the other is its page number This one shows the previous page number and this one is the next And yes! Some numbers are left unused During the designing process you most probably revise add or remove some pages of your drawing and since these page numbers are used
many times within the wiring diagrams to address different components you don’t want to change them every time you add or remove a page So, you better leave some
numbers as a spare! The first part of the drawing is assigned to power distribution across the panel for different purposes Whether it is a 3-phase power like here or it is a 1-phase
or 24 volts control power As I’ve explained, this
electrical and control panel belongs merely to an individual yet central part of a packaging machine Therefore, in addition to
distributing this 3-phase input power inside our electrical and control panel the designer considered
transferring the power to other sections of the
packaging machine as well As you see, two fuse disconnectors with different ampacities have been used here Power distribution has happened
until page 62 as you see Let’s return to page 20 to speak some details The first output is going to page 22 which is the next page On this page, the 3-phase power has been distributed inside the panel using a “Distribution Block” It is nothing but some premade busbars with some screws on them for making the connections simple easy and safe In continue, we see the same configuration until we reach the single-phase
power distribution that is used for some utility stuff like the panel lamps sockets fan and the limit switch
of the panel’s door The next part is assigned to the control
circuit’s power supply which is 24 volts We have discussed about it in previous videos As the designers have chosen the AS interface for some parts of the machine the next page is about feeding the AS interface power supply with 3-phase power From the output, different AS interface I/O modules and sensors have been supplied As you see in the datasheet
of this power supply the output voltage is something around 30 volts Again, we have some 3-phase
power distribution here Obviously, most of these
three-phase feeders are going to supply our rotary friends or electric motors Each electric motor is in charge of moving a mechanism or part of a mechanism The next part is about exchanging some signals between this part of the packaging machine which is the palletizer and the control panels of the other parts of the machine I will explain this part
in a separate video After that, we reach to wiring diagrams of the safety devices installed in different parts of the machine that are wired to the safety relays within the control panel Take different entrances around the machine as an example While the machine is operating if someone enters a restricted area whether it is closed by an access door or only by safety sensors then the machine should be
stopped immediately It is the same story for the
emergency stop push buttons By the way you can watch this previous video from the links in the description
to get more insights into the safety relays wiring diagram We have recently added the Join or membership option to the channel By joining the channel you will benefit from various perks depending on the plan you choose and at the same time, you will support us to develop more quality videos The next part begins with
some simplified schematics that give us a general
overview of the control or automation network of this machine On the first page, you see the Siemens PLCs Siemens ET200SP that acts
as a remote I/O system an AS interface master to control
Distributed I/O network the VFDs that are networked
in daisy chain topology a touch panel as the HMI or
Human Machine Interface and finally, an industrial Ethernet switch to connect all these together
and to higher level PLCs In the next sheets we can find out how
these devices are powered and where their Ethernet ports
are connected, one by one For example, this is the Ethernet switch and this is its input power wiring We should trace each RJ45 wiring to see where it is connected This port is connected to tag ET7 on page 212 which is the next page, and column number 7 and this is ET7 on page 212 that is connected to the ASI master device This section is illustrating the
connection of the sensors transmitters, and other instruments
to the PLCs’ local Input and Output cards or
to Remote IO cards This might seem familiar to you as we have discussed the same part in another wiring diagram
in a previous video So, I will escape from that and invite you to watch that video But I would like to jump over to a sheet to quickly skim another type
of signal connection drawing As this specific machine has
employed AS interface you will encounter this kind of layout as well as the ordinary type or PLC type of IO connections The next section that I am
going to briefly review is the VFDs’ cabling and wiring diagram You might remember this page
from the previous video The corresponding page from this document has pretty similar information with only a different layout This is the power section and this is the control section or the signals from PLC The input power is coming from one of the
power distribution terminals at the very beginning of the drawing I invite you to click the
like button on this video if it was helpful to you this far Thank you Next, is about the control stations or operator panels that are distributed all over the machine for different purposes This is one of these panels or stations There is a table that guides us with the operators on this panel What is its Tag? Where can we find its internal wiring inside this document? Is it a selector switch a push button or an emergency stop push button? What is its function? Then you’ll find a graphical
layout of that station And finally, here is its wiring diagram There it continues to other panels until we reach the electrical
and control panel itself We also have some switch operators on the main control panel You will find its table
here on the next page One of the parts that
every panel’s wiring diagram regardless of being either a control or an electrical panel, should contain is its general layout This layout consists of a so-called “Macro” of every existing component within the panel and its approximate location in there Last but not least is a section related
to terminal blocks of the panel This part is usually used by technicians who connect the wires
to the terminal blocks inside the panel and make them ready for the FAT SAT and pre-commissioning This section is known as the connection or termination diagram Here, for example,
you see the terminal strip separator and terminal blocks for connecting
the incoming power cable cores Hot wires Neutral and Earth wire There might be other sorts of information like the voltage level devices’ tags that the output wires are going
to be connected to, and so on In the end, there is a
short I/O list as well that we will explain more
about that in future videos This is a summary of the whole sections we had explored in this video and you might probably will deal with in your projects in future and this is not the bottom line, however as I will show you in future videos you might encounter many different
types of wiring configuration and lots of other documents depending on the size
and type of the project I invite you to watch these videos next and hope you enjoyed this video Thank you very much for watching
