What Precaution Should Be Observed When Wiring an Emergency Stop

question 4

Multiple Choice

What precaution should be observed when wiring an emergency stop pushbutton to a PLC?

• A) It should be wired normally closed and programmed normally open.
• B) It should be wired normally open and programmed normally closed.
• C) Emergency stop pushbuttons should be hard-wired and, therefore, should not be wired to an input module.
• D) It should be wired normally closed and programmed normally closed.

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Definitions:

Extracellular Osmolality

The concentration of solutes outside cells, critical for maintaining fluid balance and cell shape by influencing water movement.

Water Movement

The flow or displacement of water through different mediums, including within biological systems or through soil and rock in the environment.

Edema

Excessive accumulation of fluid within or around cells, usually causing swelling.

Interstitial Fluid

The fluid that fills the spaces between cells, providing a medium for the exchange of substances between blood and cells.