compressor and light question...

[archiver]

Posted by Al Skierkiewicz at 2/14/2001 2:04 PM EST


Engineer on team #111, Wildstang, from Wheeling High & Rolling Meadows High and Motorola.


In Reply to: compressor and light question...
Posted by Anton Abaya on 2/13/2001 3:34 PM EST:



Anton,
We measured compressor draw with a Fluke Current probe. At low PSI current is low, but goes up to steady 9-10 amps above 60 PSI. Current is very high at start no matter what system pressure is, but is short duration.(less than one second) If I am not mistaken, FIRST requires the pressure switch to be linked to pump so that it does turn off electrically. The relief valve on the pump opens reliably at 120 psi.
Lamp draws in the neighborhood of 3 amps, a lttle less that last year.(smaller motor, smaller turning assy?)
Considering the specifications on the breaker, I don't expect to see any robot trip the main breaker for electrical reasons. If it trips it will be due to mechanical "hit" or excessive temperatures.
Running pump and multiple drive motors may draw down battery terminal voltage. We are always concerned about this since the robot controller will reboot under 8 volts. For this reason, our drivers monitor battery voltage at the opertor interface.
Al