control sequence

[phazed out]

I know control panel circuit diagrams/design has to be constructed to all relevant regulation and laws applicable to the country of use,
Is it possible for some of the member her to post basic control circuit using just relay/timer hardwired circuit to perform basic control function.
So other member can replay with there version of how it operates.
Attached is an example

 

[Knobhead]

I can't understand what you want? That drawing is perfect for plant use.

Do you want it wire by wire, if so give me time and I'll do one. I'm going for my evening nap now.

 

[phazed out]

No Tony as some of the member here do not have a lot of experience of control circuit.
They could write how they think it work and after a few explanation an answer would be given.
Thus gaining some insight into simple control diagrams

 

[Knobhead]

Who are you, an examiner?

Or is this a covert way of getting your homework done?

BTW the drawing would be laughed out of any maintenance shop!

 

[snowhead]

Ah the luxury of having acurate drawings for control panels.

In fact, having any drawing sometimes.

 

[phazed out]

Not doing any homework just trying to help people gain the basics of control.

No need for a detail explanation some where along the lines.

What happens when the start button is operated, power is applied to relay -K1 Through off delay contact and so on

 

[snowhead]

Question: Provide a variety of drawings showing various operations and give an explanation of the workings.

Answer; Seek out a forum.

 

[phazed out]

Please post some examples of good layout.

I can't understand what you want? That drawing is perfect for plant use.

BTW the drawing would be laughed out of any maintenance shop!

 

[silva.foxx]

How clever... you have sort of answered this post >>> http://www.electriciansforums.net/c...actor-needs-have-time-delayed-off-switch.html

@phazed out... as you are relatively new to this site... I think you have 'steamed in' and gave a very misleading impression. The idea of getting users acquainted with schematics, building a task to develop understanding of control circuits and starting a conversation on something fundamental that a lot of us, to this section, deal with daily what causes us frustration with our colleagues and apprentices, is a nice idea.

If you had gently introduced yourself, clearly explained your idea (I thought it was typed in broken english) and suggested it as a task... I'm certain you'd have been received better.

 

[Knobhead]

Ah the luxury of having acurate drawings for control panels.

In fact, having any drawing sometimes.

HeHe, drawings? What are they? Usually an oil soaked pulp congealing in the bottom of a panel.

I will say I don’t like modern drawing methods having been brought up with A0 or A1 drawings. Left to right is correct to me (also ties in with PLC drawings). A4 top to bottom with numerous cross references to drawing --- drives me mad!

I don’t think this will come though very well

View attachment 13324

 

[theroadblock]

HeHe, drawings? What are they? Usually an oil soaked pulp congealing in the bottom of a panel.

I will say I don’t like modern drawing methods having been brought up with A0 or A1 drawings. Left to right is correct to me (also ties in with PLC drawings). A4 top to bottom with numerous cross references to drawing --- drives me mad!

I don’t think this will come though very well

View attachment 13324

haha, o dear you wouldnt like my work then matey, all modern method of crossrefrencing ect, i get on with it lovely personally! though i have only recently touched on designing my own control circuits im loving it! i will post a copy of my most recent design when it is complete for your scrutony tony

 

[alarm man]

No Tony as some of the member here do not have a lot of experience of control circuit.
They could write how they think it work and after a few explanation an answer would be given.
Thus gaining some insight into simple control diagrams

i dont get your post,you say you want to help people understand basic control circuits,but you ask others to do it for you,and when one of the members who does know his stuff offers to do it wire for wire in his own time you say no,because you want step by step instructions for you to understand..

 

[Knobhead]

haha, o dear you wouldnt like my work then matey, all modern method of crossrefrencing ect, i get on with it lovely personally! though i have only recently touched on designing my own control circuits im loving it! i will post a copy of my most recent design when it is complete for your scrutony tony

I’m not an arbiter of what’s right or wrong. It’s just that over the years I’ve seen changes in drawing systems, some good and some bad.
One of the daftest was all drawings would be put on computer, great I’m out on the plant and the computer was ¼ mile away in the control room. That didn’t last long!

At the end of the day an A0 plotter costs a small fortune, whereas an A4 printer you will get change out of £60 at the corner shop.

Post some of the drawings you’ve done. Even though we all use the same building blocks, we all put them together differently.

 

[stef]

I think I know what you want: which wire goes to which terminal point on the contactors? Not an electrical drawing, more like a physical, one which shows the contactors as blocks with say 10 terminals as it would be seen inside the panel?This is ok for rebuuilding a new panel but for faultfinding purposes the ladder diagram is more useful. The physical diagram doesn't show you what each terminal point actually does, in fact I find such diagrams confusing esp when each wire is drawn in the same color.

 

[telectrix]

what confuses me with these ladder diagrams is getting the beermats in the correct order, like a mosaic. LOL.