Emerson FM-3 Manual de instalación descargar pdf (Pagina 134)

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FM-3 Programming Module Reference Manual

an absolute position of zero and ends at the RotaryRolloverPosn. For example in a rotary

application a PLS could be setup with an OnPosn of 90 degrees and an OffPosn of 100

degrees. If the RotaryRolloverPosition is set to 360 degrees the PLS would come on at 90, go

off at 100, go on at 450 (360+90), go off at 460 (360+100), go on at 810 (2*360+90), go off

at 820 (2*360+100), and continue repeating every 360 degrees forever.

PLS Source PLS.#.Source

PLSs can be assigned to three different sources: MotorPosnFeedback, MotorPosnCommand,

or MasterPosnFeedback. This parameter determines which position signal the PLS uses to

reference its OnPosn and OffPosn in order to determine its PLS.#.Status parameter.

PLS Status PLS.#.Status

This source is active when the position of the PLS source (motor or master) is greater than or

equal to the OnPosn and less than the OffPosn.

Positive Direction PositiveDirection

This bit is used to select which direction of motor rotation is considered motion in the positive

direction. Select from CW or CCW.

Position Command PosnCommand

Position command sent to the EN drive by the FM-3. This parameter does not take following

error into account. See also PosnFeedback and FollowingError. Units are in user units.

Position Error Integral Enable PosnErrorIntegralEnable

This parameter is used to enable the position error integral compensation. See also Position

Error Integral Time Constant.

Position Error Integral Time Constant PosnErrorIntegralTimeConstant

Position Error Integral parameter is a control term, which can be used in Pulse mode to

compensate for the continuous torque required to hold a vertical load against gravity or to

minimize following error.

The user configures this control term using the “Position Error Integral Time Constant”

parameter. This parameter determines how quickly the drive will correct for in-position

following error. The time constant is in milliseconds and defines how long it will take to

decrease the following error to 37 percent of the original value. In certain circumstances the

value actually used by the drive will be greater than the value specified here.

Min Time Constant = 1000/Response

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Emerson FM-3 Manual de instalación Pagina 134