CAT Roof Support PMC-R Shield Control System operation and maintenance Manual

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Endgate Push The operator can trigger a push of the gate shields by pressing the Bank Push key twice and then pressing start.

BankPush GateEnd ...press Start

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This only works from the first twenty shields for the Headgate and the last twenty for the Tailgate push. The active display will show "Gate Push: delta >", "Gate Push: < delta", or "Gate Push: active" as appropriate.

Belt Tailpiece Controller The belt tailpiece controller connects to the server and allows the operator to pause the headgate push, until the mobile tailpiece is in place, then from the belt tailpiece controller the gate push can be activated. When the black button is pressed in, the gate push is disabled and from the control shield to #1 shield will all display Btp locked. When the belt tailpiece is ready the operator presses the green button 3 times to initiate the end gate push.

Prewarning / Active Display The top line of the display will indicate what triggered the Conveyor Push (SRB, GatePush, LockPush or Bankpush). Conveyor Push updates the current action information on the display to show what is happening: active - actually pushing delta - waiting on an adjacent shield to push farther gateend - waiting for other gateend shields to push so the gate pushes evenly Last Auto Fct will be posted as "Manual Push", "SRB Push", "Bankpush", or "Endgate Push".

Operating Logic The Conveyor Push feature offers several methods of protection to prevent damage to the equipment.

Shield Back protection Shield Back protection is designed to protect the conveyor from damage during the conveyor push operation. If a shield is left back (not advanced) pushing the conveyor will break the relay bar or clevis connection. Shield Back protection will prevent the push from occurring in this situation. © Caterpillar

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