Solenoid is teh fail

[Mark McLeod]

Originally Posted by Joe Finkel

Mark, when you mention the SMC SY3000 solenoid,you probably also meant
that it has to be 24v as well?

Hi Joe,

It doesn't have to be, but you do probably want to chose all 12v solenoids or all 24v solenoids if you can afford what you need to buy.
If a team has really tight $, then there are a lot of combinations of 12v & 24v solenoids that are possible this year.

One Solenoid Bumper can only support one or the other voltage.
We are allowed two Solenoid Bumpers though, and one could be 12v while the other could be 24v. In addition, 12v solenoids can be driven through the Digital Sidecar Relay outputs w/Spike.

Originally Posted by AndrewJS

1) The old 2009 festo valve works when manually testing it. It was wired into the 12v power supply (not 24). When testing with the sample program "simple solenoid example," an orange light lit up on it, but it did not actuate. We double checked the wiring and the plumbing to no avail.

This test bothers me, because the 2009 Festo was wired differently than earlier years. The results you saw could easily mean the 2009 Festo wiring was on pins 1&2 rather than 1&3, or vice-versa.

[AndrewJS]

Originally Posted by Mark McLeod

This test bothers me, because the 2009 Festo was wired differently than earlier years. The results you saw could easily mean the 2009 Festo wiring was on pins 1&2 rather than 1&3, or vice-versa.

You were right, we had the wiring wrong. We got the 2009 valve to work wiring it to 1 & 3. We're double checking the 2010 valve now.

EDIT: Seems the guy who wired the 2009 solenoid wrong had the plumbing wrong on the 2010 solenoid. We put the line coming from the tanks into the center of the side with 3 inputs, then connected the back and front of the cylinder to the side with only 2 inputs. The exhausts comes out of the left and right side of the side with 3 inputs. This means we have to fire the separate solenoids to make it go in or out, but at the moment we only have 3 connectors, so this is our only option.

[bhsrobotics1671]

are previous KOP SMC solenoids legal?

[bhsrobotics1671]

Originally Posted by Mark McLeod

Any of the SMC SY3000 series are under the 2010 rules Cv requirement.

Do not get the SY5000 series. They are all above the legal .32 Cv

Oddly enough the Festos are not rated in Cv, but in something like ml/s. That's not going to be documentable for an inspector.

There are some links posted in other recent solenoid treads, or I'll hunt up some soon. I've got robotics now and a wireless bridge that's DOA.

Where can you buy these? I can find the documentation on how to assemble them for FIRST teams but that is it...

[DonRotolo]

I just have a nagging feeling the vent port has a plug in it. I'd love to see a close-up, non-blurry photo of the valve plumbing.

[ayeckley]

Originally Posted by bhsrobotics1671

Where can you buy these? I can find the documentation on how to assemble them for FIRST teams but that is it...

Allied Electronics (www.alliedelec.com) is probably the "distributor-of-least-resistance" (to coin a phrase) within the US. The number of available options and configurations is a bit daunting, and there seems to be about a dozen different versions of the datasheets online. The good news is that just about anything within the SY3000 series is legal this year (including their 3-way valves). Allied doesn't carry the entire product line in stock (they are heavy on the 24V pilot valves), but it seems that the lead time on most non-stock items we've wanted has been only a few days.

That said, most of our stock has come from eBay (subject to the usual accounting rules when it comes to the BOM for the competition).

[Homsar66]

Originally Posted by Mark McLeod

Any of the SMC SY3000 series are under the 2010 rules Cv requirement.

Do not get the SY5000 series. They are all above the legal .32 Cv

Oddly enough the Festos are not rated in Cv, but in something like ml/s. That's not going to be documentable for an inspector.

There are some links posted in other recent solenoid treads, or I'll hunt up some soon. I've got robotics now and a wireless bridge that's DOA.

The SMC noid i've got here is a 3000 series but it's ports are 1/4 inch, making it not legal. So be specific, I'd hate for a rookie team to spend all their money on illegal noids (and they sure are expensive).

As for the Festo, glad you figured it out. You mentioned it only blinked, on ours that means it's wired wrong, usually polarity is backwards.

[ayeckley]

Originally Posted by Homsar66

The SMC noid i've got here is a 3000 series but it's ports are 1/4 inch, making it not legal. So be specific, I'd hate for a rookie team to spend all their money on illegal noids (and they sure are expensive).

When you say your valve is 1/4", are you referring to the dimensional measurement of the port, or the NPT size of the port? A 1/8" NPT port is dimensionally about 0.25". The <R72(C)> port size requirement is in terms of NPT size, not dimensional size. As near as I can tell (from SMC SY Master Catalog ES11-57), the SY3000 series is not available in a 1/4" NPT (neither base nor body-ported varients).

[Homsar66]

Originally Posted by ayeckley

When you say your valve is 1/4", are you referring to the dimensional measurement of the port, or the NPT size of the port? A 1/8" NPT port is dimensionally about 0.25". The <R72(C)> port size requirement is in terms of NPT size, not dimensional size. As near as I can tell (from SMC SY Master Catalog ES11-57), the SY3000 series is not available in a 1/4" NPT (neither base nor body-ported varients).

The NPT size. The same size as the threads on the accumulators.
I just thought it was interesting as it's the only one we have with 1/4 inch fittings.