Emerson Epsilon EP Drive 400518-01 Manual de instalación descargar pdf (Pagina 71)

Setting Up Parameters

Figure 54: 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.

Source

The source of a PLS can be assigned to the motor axis (MotorPosnFeedback, MotorPosnCommand) or a master

synchronization signal (MasterPosnFeedback). The term motor axis refers to the motor being controlled by the FM-3/4/drive

combination. The source list box is used to select the source for the individual PLS.

ON Point

PLS.#.Status will be active when the selected source position is between the PLS.#.OnPosn and the PLS.#.OffPosn. Assume

that the PLS.#.Direction is set to "Both". When traveling in the positive direction and the feedback position executes the

OnPosn, the PLS.#.Status will activate. As the motor continues in the same direction, the PLS.#.Status will deactivate when

feedback position reaches or exceeds the OffPosn. If motor travel changes to the negative direction, the PLS.#.Status will

activate when the feedback position reaches the OffPosn, and will deactivate when it continues past the OnPosn. All on/off

positions are defined in user units.

PLS.#.Status will be active if:PLS.#.OnPosn < Feedback Position £ PLS.#.OffPosn

OFF Point

PLS.#.Status will be active when the selected source position is between the PLS.#.OnPosn and the PLS.#.OffPosn. Assume

that the PLS.#.Direction is set to "Both". When traveling in the positive direction and the feedback position reaches the

OnPosn, the PLS.#.Status will activate. As the motor continues in the same direction, the PLS.#.Status will deactivate when

feedback position reaches or exceeds the OffPosn. If motor travel changes to the negative direction, the PLS.#.Status will

activate when feedback position reaches the OffPosn, and will deactivate when it continues past the OnPosn.

PLS.#.Status will be active if:PLS.#.OnPosn < Feedback Position £ PLS.#.OffPosn

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Emerson Epsilon EP Drive 400518-01 Manual de instalación Pagina 71