adccommunitymod (AutomationDirect) asked a question.
CLICK pump lead lag
Created Date: May 09,2013
Created By: rday78
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Just getting my feet wet with the the CLICK and PLC programming. Have a booster pump set that needs to alternate based on runtime and has a lag switch to bring extra pump online in case pressure goes really low. Saw the 10 video series set but besides the very basic, im at a loss. Really could use a good resource to get a knowledge based built. Any ideas are welcome.
***Edited by community moderator***
Created Date: May 13,2013
Created by: rday78
Added file e255booster.zip
Created Date: May 09,2013
Created by: AlbertL
Congratulations on getting started with PLC programming! I'm a beginner myself, and find it a lot of fun.
A good place to start is defining your inputs and outputs - that will help build a framework for your solution.
Do you have the Click powered up and connected to your computer, so you can load and test your program?
For alternating: one way to do it is with a counter that increments on each "start " signal, and resets itself when the count is reached. The example I posted in this thread might help:
https://community.automationdirect.com/s/global-search/CLICK%20PLC%20..%20Best%20Method%20Question
Created Date: May 10,2013
Created by: rday78
Thanks for the reply AlbertL. I wont get a chance to look at your example till monday but I appreciate the help. If there are any other resources that will help me get a handle on this let me know. I have the PLC on the bench and I wrote a program, transfered, and ran it. Looks like I need some terminal blocks because its turning my desk into a mess.
Created Date: May 13,2013
Created by: rday78
Ok... Had an explosion of ideas come to me this morning from a fresh start. Working with what you showed me I made my own lead lag for a set of 2 booster pumps. Not complete yet but figured id share and get some feed back.
Created Date: May 13,2013
Created by: deep6ixed
Again Welcome to the wonderful world of programming PLC's. If you have a budget that allows, and the time. I 've found making a small trainer often helps. Here at the shop I made a test bench / training unit with some toggle switches wired into a small click unit, all mounted on a piece of scrap steel bent at a slight angle. I also added a CMore Micro HMI unit later to get the basics down on communicating to an external device.
I 've found that getting started with programming, the best thing to do is just try it. My learning phase consisted of sitting down at the PC, with the trainer plugged into the the USB / Serial converter, just starting with simple On / Off Controls and moving from there to timers, counters, etc...
Another good piece of advice is this: be able to write out what your want your code to do. If you can't explain what you want done in English, then trying to do it in ladder is much harder.
Before I program anything I write down the outline of the program and how I want it to function:
When System is in auto, Turn Pump 1 on
If Pump 1 is on and pressure is low, turn Pump 2 on
Good luck, and were all here to help.
Created Date: May 13,2013
Created by: rday78
I have a test rig sitting on my desk now.turning into a bit of a mess with all the wires all over the place. I only get about an hour or so to work with this thing every other day or so. After I uploaded my prog and got started doing other things I realized I have some more problems with the prog to figure out. Just need to hit it a lil at a time
Created Date: May 09,2013
Created by: rday78
Just getting my feet wet with the the CLICK and PLC programming. Have a booster pump set that needs to alternate based on runtime and has a lag switch to bring extra pump online in case pressure goes really low. Saw the 10 video series set but besides the very basic, im at a loss. Really could use a good resource to get a knowledge based built. Any ideas are welcome.