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In an interlock logic diagram, what does E. S/D PB NOT PRESSED mean?

2018-03-19View Original

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In the interlock logic diagram, what do E. S/D PB NOT PRESSED and COMB.AIR PRESS. NOT LO. LO. mean?
Reply #22018-03-19
E. S/D PB NOT PRESSED: The ESD button has not been pressed; COMB.AIR PRESS. NOT LO. LO.: The compressed air pressure is not low low.
Reply #32018-03-20
emergence shut down personal bottom not pressed,
Reply #42018-03-20
Emergency stop activated, personal button not pressed: The manual emergency stop button was not pressed. Should bottom be button?

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