![]() |
States for SMC 3 position valve
Does anyone know how to "lock" the position of a piston that is controlled by a 3-position SMC valve? I tried setting them to "kOff", but that doesn't seem to work. They just fully extend and retract, which is not what we want. Should I use 2 'Solenoid' objects as opposed to 'DoubleSolenoid' objects?
|
Re: States for SMC 3 position valve
You need a closed center three position valve to "lock" the cylinder. Not a typical FRC valve which are two position. And to be legal, a way that vents the cylinder with the required vent vavle.
|
Re: States for SMC 3 position valve
Quote:
|
Re: States for SMC 3 position valve
Just having two soleniods on the valve does not make it 3 position. If it is, then both soleniods off sets center position. You never want to energise both solenoids at the same time. Do you have the full part number handy?
Two position dual solenoid valves stay in the last state energised. IE extended or retracted which is what you are describing? |
Quote:
P.S. The 'DoubleSolenoid' and 'Solenoid' I was referring to were Java objects. |
Re: States for SMC 3 position valve
Without knowing the what the actual valve is, I cannot give any advice on programming it.
On the physical side. If you cannot fully vent the pneumatics from the high pressure vent, your pneumatic system isn't FRC legal. Closed center three posittion valves tend to prevent that |
Quote:
|
Re: States for SMC 3 position valve
Silly my for try to read this on my phone. Anyway that does look like the part number for a 3 position valve. The valve should block the A&B ports & lock the cylinder when both solenoids (the physical ones) are de-energized. If not the valve isn't that part number or something else is wrong that programming will not fix. Another possibility is the cylinder is acting faster the valve. If so you will need flow restrictors in the cylinder ports.
You probably want to use two solenoid objects and set them both to off rather than the double solenoid object. The net result should be both solenoids off. |
| All times are GMT -5. The time now is 05:37. |
Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi