0:02 hello and welcome to a new video about promatics
0:04 promatics
0:06 this time we're going to talk about you know
0:07 know
0:10 how we can control how we are using
0:16 control uh valves for our system
0:19 well i will again draw
0:22 a possible control yeah this time i'm
0:23 going to use
0:27 a single acting cylinder
0:37 just a spring the valve i need for a
0:38 single acting cylinder
0:50 right now here we would have
0:53 pressure intake so this is one this is
0:54 two this is three here we have an
0:56 exhaust here it's spring loaded
1:00 here's a button and if i press the button
1:07 the cylinder will go out okay pretty
1:09 straightforward approach okay this is
1:11 the most simple approach because
1:13 my input element because here is an
1:15 input button my input element
1:17 is already my control element and my
1:19 control element is switching the power to
1:20 to
1:24 to my cylinder yeah however this is not
1:26 used very often i show you now the
1:28 version or the
1:33 the variant how it is more common
2:03 again it's spring-loaded again we are
2:05 feeling it
2:09 and again here is the
2:13 pressure source and here we have three
2:16 one two three and now
2:20 i do not put the button here
2:44 and this i will use to switch
2:47 this valve so here is the connector one two
2:48 two
2:50 this is a parametrically controlled
2:52 valve yeah
2:55 and here we are also connected to the
2:57 pressure source one
3:04 so if we push here now one and two are connected
3:05 connected
3:08 this is operated this will push this and
3:10 we are going out
3:26 direct and indirect in german
3:30 control this is much simpler to say
3:38 this is more usual why because
3:41 usually here we want to have power
3:43 cylinder we want to have power because
3:44 this is our working element
3:46 so the cylinders are usually powerful
3:49 there's a reasonable size of cylinder
3:50 and so on
3:53 yeah so we need to switch a reasonable sized
3:54 sized
3:58 tube hose whatever is connected here
4:01 yeah to switch a reasonable sized
4:04 tube and need a reasonable sized valve a
4:05 reasonable sized valve
4:09 does have a operating forces and so on yeah
4:10 yeah
4:13 need more power yeah
4:17 so here this is not that easy this can
4:18 only be done
4:20 at rather small cylinders and rather
4:22 small forces then i can use
4:26 this variant yeah if this here is a big
4:28 bigger valve i can operate this bigger
4:31 buff with some small valve
4:34 yeah and this small valve is simply
4:37 helping me by switching the speaker off
4:38 i said yeah hey this we had already
4:40 pre-controlled rafael why don't we use
4:42 pre-controlled valve
4:45 yeah because sometimes or very often the
4:47 input elements
4:50 are not close to the working elements
4:51 they're somewhere yeah so there is quite
4:54 a distance in between
4:58 and i do not want i do not want to have
5:01 big cubes hoses yeah
5:04 air hoses very long because i need to
5:06 fill them i need to pressurize them i
5:07 need a lot of
5:11 air to feel bigger bigger
5:14 uh hoses i if i can operate this
5:17 with small tiny signal hoses where not
5:18 really much
5:20 areas it's just about pressure
5:21 information taking
5:25 yeah then i need less power
5:28 it's a big difference if i pressurize a
5:36 so also here this is an advantage so if
5:37 there is
5:39 if this is very close to the cylinder
5:40 this is no issue
5:43 yeah if this and the working element are
5:44 pretty far apart
5:47 then this is an issue then i keep this a
5:49 very tiny tiny line
5:52 and it's easy i do not waste
5:56 energy too much instead of
5:58 making this line long because then i
5:59 really have to pressurize
6:02 quite a big amount of volume simply
6:04 inside the tube
6:08 yeah non-direct approach
6:14 the price which is more than the
6:16 cylinder will pay itself
6:25 okay so direct indirect approach
6:28 indirect approach non-direct approach
6:32 preferable and used reasons i just told you
6:34 you
6:36 yeah now we know quite a lot of stuff here
6:37 here
6:40 we know quite a lot of valves now we know
6:41 know
6:45 uh you know we can throttle we can
6:49 switch we can operate and so on
6:52 so we're ready to solve some issues
6:54 this is what we're going to start the
6:56 next video next video
6:59 we will slowly
7:03 extend our knowledge about how we can
7:03 build up
7:06 we simply use the symbols and say okay
7:08 this and that we want to reach
7:10 and now how which valve we have to
7:12 connect how to each other
7:15 that this goal is reached some examples
7:17 then starting next video
7:19 for this time thank you very much for
Chrome Extension