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timohei.net / My Courses / TL110103 PLC Control 3 cu / Excercise: Valve Control /
PLC I/O: Inputs

Paikallisohjauspaneeli
Venttiilin ohjauskotelo = Valve Local Control Panel
K = Closed
A = Opened
OHJAUS = CONTROL
LIIKKUU = MOVING
VALVONTA-AIKA = DISCREPANCY
  1. Control Switch "Closed/Opened"
    • A turning switch in the Local Panel
    • Activates driving of the valve to open or closed position
    • Input switch in open position (0) -> the valve is closed
    • Input switch in closed position (1) -> the valve is opened
  2. Limit Switch "Closed"
    • A limit switch at the valve
    • the switch is closed only when the valve is fully closed
    • both limit switches are open when the valve is in an intermediate position
  3. Limit Switch "Opened"
    • A limit switch at the valve
    • the switch is closed only when the valve is fully opened
    • both limit switches are open when the valve is in an intermediate position

    Updated 14.3.2007

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