Time Delay Relays

I charge $85/hr for system design work. I estimate this job will take approximately 3 minutes in a napkin, plus 2 hours for drafting, but I'll apply a discount and charge you just for the 2 hours total. I only accept paypal, in advance please.

but, how much for the monkey?

I would do it for free if this is something about time machine and stuff.

My advice is free and barely worth it.

This isn't rocket science.

• Solid State Timer Relays - Relays - Grainger Industrial Supply
  
• Time Delay Relay - Timers - Solid State Relays - Timing ..
• Solid-state Fixed Timing Relays
• 
  
• Images for time delay relays and circuits
• 
• 
• 
• 
• 
  

"My advice is free and barely worth it."

I remember seeing a few posts voicing a similar opinion.

et tu, Doorman?

Simul meus, lyn.

LOL!

https://books.google.com/books?id=TQY0rGfaftsC&pg=PA171&lpg=PA171&dq=time+delay+motor+starter+ckt+for+3+motors&source=bl&ots=5Gexutq_B5&sig=AOk5t7g8GPwgjWgGXBRa04cmRKU&hl=en&sa=X&ei=ne4JVfSbPMOiNpfZg4gF&ved=0CFoQ6AEwDA#v=onepage&q=time%20delay%20motor%20starter%20ckt%20for%203%20motors&f=false

Any fees go to JRaef's Pay Pal account

Ice is nice....could you draw a wiring diagram with basic components and how you think it might be wired....and post it here....↓

I see your concern, but normal operating conditions differ from emergency conditions. A separate E-Stop Circuit should be configured such that any normal delays or timed responses are bypassed.

I have to side with spades on this one. If you are doing a delayed start and stop on these motors, it sounds (IMHO) like stating and stopping a series of conveyors. If that, or something similar is the situation, then you really need to look at the safety aspect.

I might be completely wrong about the application, but if I am, then you need to supply some more information.

Starting motors in sequence is nothing out of the ordinary, and you already have the time delay relays needed to accomplish that sequence. But delayed stopping is another matter.

Seems like a lot of jokers on this forum but I would recommend using a small intelligent relay for this job. This is a very low cost intelligent relay which you could use to program the outputs to switch on and off with time delays and it will save money on wiring and save space in your panel.

http://www.charter-controls.com/product/intelligent-smart-relays/expandable/genie-nx-expansion-module-110-240vac-g7ddt6e-v5/2634/

I'd use a compact PLC instead, but then I'm funny that way.

Also known as an Intelligent or smart relay :)

OH C'Mon! Do your own Homework, we're not doing it for you....

Seriously, At least make the attempt, so that we can ridicule, I mean guide you and prevent you from making serious mistakes.....

http://www.macromatic.com/blog/understanding-time-delay-relay-functions/

Above is a link to several time delay functions. What you are looking for is a on delay and true of delay. The basic relay can be used as the trigger or input voltage to the first and second timer relay and adjust them for the time off set you need. Note as others have pointed out for safety the E stop must be able to shut the system down with out any delay.

Thank you all for the serious responses, the book suggested by wareagle is very good.

There is a lot more to this system, including e-stops. Im sorry if I didn't include all the information, I needed something to visualize the delay between starters.

Again, thank you all that helped, and the others, I hope you get the same response when you need help.

Just a comment on your last statement, when new to a forum (which you are) one must assume that there is a certain culture established by it's long-standing membership. Typically the wise thing to do is observe and learn the culture prior to critiquing it; let alone deciding to join it.

I guess I had the luck of joining right around, and slightly before, most of our currently prolific members so I watched the culture develop and was a member while it formed. Being mostly a reader lurker in that early period 2005/2006 I learned the personality of the forum prior to deciding to become a contributing member.

Now, had I not liked what I saw, had I not agreed to open myself up for the snarky comment, had I not wanted to become part of what makes CR4 what it is - then I would have moved on to one of the 100's of other engineering'ish forums that are out there.

Simply - with the slightest of effort you should have been able to discern what type of forum this is and the personality of it's membership and would have known full-well how a request such as yours would have been received by some of it's members.

I mean does it come as any surprise that Lyn and Crabtree are typically the first to respond to many inquiries and often take the critical/snarky road in their reply? I mean, come-on - if this surprised you then you obviously did not do even the slight research into this forum - kind of like how you obviously did little to no research on your question prior to coming here.

So, I'll help clue you in regarding my impression of what CR4 is... It is a global gathering of some of the most brilliant and experienced people I have ever come across that have a unique way of communicating amongst themselves that often confounds those on the outside looking in. There are members on this forum that have forgotten more than you could ever possible hope to learn, and they are willing to share that knowledge with almost anyone. But, to be on the receiving end, especially as a new (un-established non-giving/only-asking member) you need to be a little gracious, a little humble, a little understanding, and a lot of tolerant.

In closing, I'm glad that some of the members were able to help you with your issue, and I hope you stay on and eventually become a contributing member of the forum; we are always open to expanding membership and love debating with those of varying perspective. Do we come across as callus - yeah - a life of putting up with people that most always want our type to do their grunt work for them, with no sign of gratitude or thanks, makes you that way.

This is a reality that hopefully some day you experience first-hand because it will quantify that those around you consider you a SME... a resource. But right now, you're the one asking the questions - not giving the answers - so don't get too upset if we serve up your answer on paper plates rather than fine china. The quality of our answers are directly proportionate to the quality of the questions... but we're still answering.

I'm sorry, I did not want to come across as ungrateful, but my attitude in forums is, if I don't have anything good to say, I keep it to myself and not ridicule others. I should've just rolled my eyes and keep on trucking.

My bad.

Yeah, I do a lot of eye-rolling here as well sometimes - it goes with the territory. But it is well worth it and a necessity that I would consider trivial as compared to the horsepower that frequents these forums and being able to draw from their experience.

There are diamonds here to be found, sometime you just have to wallow through the refuse to find them. And sometimes the refuse is the gem.

Sometimes, you also need to take into consideration the PURPOSE of a forum such as this. Most of us are either people with experience looking to help others in our industry with what we know, or those who are WORKING on a problem that they need a little help with. The way you phrased your question implied that you had done NOTHING to that point toward trying to figure it out, and instead were looking for someone to do it FOR you, and for free. Speaking for myself, that sort of work is what I get paid for. So you asking for help to AVOID having to find and hire someone like me in your area to do this for you, OR really try to learn it yourself first then ask for help on a stumbling block, is akin to you being introduced to a Doctor at a party and immediately taking off your shirt to have him look at a lump on your back.