Help with 24volt 5 port 2 way valve for my powered hammer

[GuntherofOrkney]

Ok i am not good with electrical and I just switched my powered hammer to a pneumatic piston and now i need to figure out how to wire my 24volt 5 port 2 way valve.(nitra avs-5211-24d) I have the 24v reed switch for it,now just to figure it all out. the instructions that came with the valve just shows what everything is but not how to wire it. (i think i might have to buy a different valve because this one is 1/8" inlets instead of 1/4" but i shall see)

So can anyone help me!!

[Halberds]

Generaly the valves have a solenoid inside to actuate the spool.
Apply voltage and it switches one way, remove the voltage and it goes back to the rest position.

Are you going to step on a foot switch to activate the piston?
Chupa made a 3 speed oscillator for the VRAH.

Yes you will need big ports to feed your cylinder.

[GuntherofOrkney]

i have a reed switch that mounts on the piston,depends on the position of the piston on what direction the air flows. you just need a air footpedal to adjust the amount of air you put into the system. i need to know how to supply the valve with power and wire up the reed switch.

[Halberds]

I think you will need two reed switches, one at each end of the stroke.
When the piston is down it sends a signal for the valve to reverse.
When the piston is up it sends a signal for the valve to reverse.

This will oscillate the piston up and down, speed depending on your air flow.

The reed switch will need a solid state 24 volt relay as they do not handle much current.
The reed switch activates the relay sending voltage to the valve.
You may need a latching relay to hold voltage on your solenoid or the piston may not travel full stroke.

[GuntherofOrkney]

nope i dont need 2 reed switches. i got the parts i need,i have seen multiple hammers with this design and studied them closely,well i thought i did. the only thing i didnt look into is the actually electrical wiring because the one i built was an air driven switch instead of the electric solenoid switch.

[Halberds]

Then run your 24 volts through your reed switch to the solenoid valve in series.
Do you have a 24 volt DC power supply?

[PatternWeld]

Gunther,

Go here. http://forums.dfoggknives.com/index.php?showtopic=8879

Grimr

[The Iron Dwarf]

a reed will only switch a small current and the solenoid valve is an inductive load meaning it will take a lot of current so unless you want the reed to only last a few strokes you will need relays and SSR would be the best for it

[The Iron Dwarf]

depending on the size of the cylinder you are using, if you want it to move at a reasonable speed get as big a valve as you can or it will work in slow motion due to the restricted movement through the valve.
1/8 may be ok for a tiny jewelers desktop hammer, think the valve in ours is at least 1"

[GuntherofOrkney]

ok i dont think you guys are understanding what i have here,i will get some pics loaded up when i can.

[Hrolfr]

ok i dont think you guys are understanding what i have here,i will get some pics loaded up when i can.

First, do you have a 120v AC to 24v DC transformer?
If so, hook it up
If not, you need one.

To fire the valve, you will need some sort of relay, an ICR would be the least expensive and easiest to wire (we call them 'ice cube relays, cuz they look like ice cubes). On an 8 pin, the terminals go

6 5 4 3
7 8 1 2

1 and 8 are neutrals (common), 2 and 7 are your 'hot'. 3 and 4 will be normally closed (3)and normally open (4) for terminal 2. 5 and 6 are normally closed (5) and normally open (6) for 7. There are 2 circuits on each base.

Wire through the base for the solenoid to fire on or off through the base. Make sure you get one for 24v DC tho

We use a lot of these (both 110 and 24) around the plant.

[GuntherofOrkney]

ok a friend on facebook showed me how to do it
http://sphotos.xx.fbcdn.net/hphotos-ash ... 8748_n.jpg
these are what i have and a switch rdy pneumatic piston.

[PatternWeld]

So you are only using the piston to power the upstroke then allowing the cam to assist the exhaust cycle?

I thought you were redoing it as a Kinyon style, sorry!

[GuntherofOrkney]

nope the piston pushes the leaf spring up which is attached to the hammer then pulls it down with force. I will show pics as soon as i finish. i bought the 24v dc power supply today,gonna go buy the hoses tomarrow i hope,maybe thursday.

[PatternWeld]

So then I assume the idea is to get fine control anywhere in the upstroke or downstroke?

If so then this design can be used as a striking hammer too?

[GuntherofOrkney]

its pretty much just like the hammer with the actual hammer attached directly to the hammer itself except that i have it moving a leaf spring and the leaf spring moves the hammer. this design is good since i can quickly move the reed switch up and down the piston to adjust the starting distance from the dish so i can hit really soft or move it away and hit alot harder. Hoping to have pics by the end of the week,i got a bunch of cutting to remove all the old unused parts to make it all clean and sweet lookin.