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|March 20th, 2010, 07:49 AM||#1|
plc5 oil pit alarm logic
Hi again all..
I am having a little bit of a problem creating an alarm for a oil pit spill. I think im making it out to be harder that what it really is.
Here is what i have:
alarm reset PV pb=B3:0/11
The float rises, and the contacts are made..alarm is on.
Hit reset,and the alarm shuts off for 20min then comes back on every 20 min until I:1/14 dropes out.
I must have brain lock,I should be able to creat the logic but keep finding flaws in it.
|March 20th, 2010, 08:52 AM||#2|
Lifetime Supporting Member + Moderator
Not exactly how I'd do it, but it should work...
| float tt alarm |---] [---+---]/[-----------------( ) | | | alarm | |---] [---+ | | alarm reset timer |---] [-------] [---+-------------( ) | | | tt | |---] [-------------+
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