1-key
Conveyor Push
In-Shield Automatic Keys These keys control automatic functions in-shield when no other shield is selected (i.e., when in Idle Mode, not in Master Mode). Positive Set Automatic key (PSA) 2-key
Pressing this key toggles the PSA function On or Off on this shield. When PSA is toggled On, the shield may begin to set, depending on the leg pressure at the moment. Locking Push key
3-key
Pressing this key activates the Locking-Push feature on this shield. Last Auto is posted as “Manual Push”. If the key is pressed again, the Locking Push feature will be stopped.
In-Shield Automatic Functions on Selected Shield From Master Mode (i.e., after selecting a shield using a Neighbor Select key) these same keys are used to control the in-shield automatic functions on the selected shield. Positive Set Automatic key (PSA) 2-key
Pressing this key (holding is not required) causes the selected shield to trigger its Positive Set function which will attempt to set to the target pressure. This is a convenient way to set the shield after manually lowering and advancing. Last Auto is posted as “Manual PSA”. Locking Push key
3-key
© Caterpillar
Pressing this key (holding is not required) activates the Locking-Push feature on the selected shield. Last Auto is posted as “Manual Push”. If the key is pressed again while still in Master Mode, the Locking Push feature will be stopped on the selected shield.
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