Emerson FM-3 Manual de Instalação descarregar pdf (Página 65)

Setting Up Parameters

PLS View

The PLS View allows users to define Programmable Limit Switches (PLS) for advanced

machine operation.

By selecting PLS in the hierarchy view, the PLS View will appear in the right (see Figure 37).

Figure 37: PLS View

A PLS can be used to turn on or off a bit based on feedback position, commanded position,

or master feedback position. Eight global PLS’s are available for a single application. To

operate a PLS, first it must be enabled (see the PLS enable destinations in the assignments

view) and then the Absolute Position Valid source must be active. Each PLS has its own

OnPoint and Off Point, as well as a Rollover Point.

The terms OnPoint and Off Point assume movement in the positive direction. Those labels

should be reversed if traveling in the negative direction.

Number of PLS Points

This parameter determines the number of PLS Points that will be used. Count always begins

with 0, so 5 points will be 0 to 4. Up to eight PLS points may be used simultaneously.

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 229 230

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Emerson FM-3 Manual de Instalação Página 65