cylcle testing..plc?
cylcle testing..plc?
(OP)
Hi all,
I do not have a good electrical background,hence the reason for my question..
I need to cycle test a unit to see if it will last over a certain amount of cycles (approx. 10,000 cycles)..
Its basically a hydraulic cylinder that I need to run up to full pressure(10,000 psi) and then retract, and then run up to full pressure again, and so on, and so on...
I think I need a PLC, so I am told..I need it to cylce every 20 seconds and I need it to have a counter on it so I can see how many cylces..
I have a high pressure pump with a button switch to activate. I obviously can't sit there and activate this cylinder 10,000 times. So I want to automate it so I can walk away and do something else.
So basically, I am clueless here..any suggestions??
thanks,
brent
I do not have a good electrical background,hence the reason for my question..
I need to cycle test a unit to see if it will last over a certain amount of cycles (approx. 10,000 cycles)..
Its basically a hydraulic cylinder that I need to run up to full pressure(10,000 psi) and then retract, and then run up to full pressure again, and so on, and so on...
I think I need a PLC, so I am told..I need it to cylce every 20 seconds and I need it to have a counter on it so I can see how many cylces..
I have a high pressure pump with a button switch to activate. I obviously can't sit there and activate this cylinder 10,000 times. So I want to automate it so I can walk away and do something else.
So basically, I am clueless here..any suggestions??
thanks,
brent





RE: cylcle testing..plc?
Set the contact closure time (the ON time) so that there is enough time for the pressure to build up and the piston to do a full stroke.
Add a simple event counter to totalize the number of strokes.
See http://www.inotek.com/Catalog/abbe16cn.html for an example of the type of relay you need. Google "universal time relay" for more stuff.
Of course, a simple PLC (Siemens Logo! for instance) would also do the job admirably. But you don't seem to want to do the programming. Or, if I am mistaken there, just do it. They cost just above USD 100.
Gunnar Englund
www.gke.org
RE: cylcle testing..plc?
Look at the SX110 for example
http://
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"It's the questions that drive us"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~