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Originally Posted by Rickertsen2
VALVING RESTRICTIONS:.........
The following is a common practice in industry and someting that could apply to a first robot to allow some of the pnumatic restrictions to be safely lifted. We have a NO 3-way single solenoid valve controlled by a spike relay. Port one( input) is plumbed to the output of the primary regulator. Port 2 is connected to to all downstream components. Port 3 is vented. When the robot is disabled, so are spikes and thus our safety valve. No compents other than the compressor, primary regulator, and acumulators have any pressure. Everything else is vented Once the robot is activated, the valve shifts and everythign gets pressure.
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The example you cited is important for safety in industry, a critical need to dump all energy sources. While this is a common practice in industry it may not directly apply to FIRST. Many teams, including ours, use the air pressure in the disabled mode to position a part of the robot at the beginning or end of the match. This years example is all the hangers that withdrew their feet when the match ended.