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Starting and
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Parameter
Descriptions
Drive
Parameters
Used by
EZMotion
Diagnostics Glossary Index
EZMotion User/Programming Guide 209
Revision A8 www.controltechniques.com
PLS Rollover Enable
PLS.#.RotaryRolloverEnable
This parameter is used to enable the RotaryRolloverPosn for the individual PLS.
PLS Rollover Position
PLS.#.RotaryRolloverPosn
This parameter is the absolute position of the first repeat position for this PLS. When enabled it causes the PLS to repeat
every time this distance is passed. The repeating range begins at 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 RotaryRolloverPosn 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.
Position Loop Response
PositionLoopResponse
The Position Loop Response is effectively a proportional gain for the EZMotion position loop. The units for the parameter are
Hz. A larger value for the Position Loop Response will result in a tighter position loop (less following error), however if it is set
too high, instability can occur.
See the Tuning section of this manual for tuning procedure.
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 Unidrive SP/Digitax ST by the EZMotion. This parameter does not take following error into
account. See also PosnFeedback and FollowingError. Units are in user units.
Position Feedback
PosnFeedback
Feedback position is the actual motor position in user units. PosnCommand minus the PosnFeedback is the FollowingError.
EZMotion Power Up Count
PowerUpCount
Power Up Count is the current value of how many times EZMotion has been powered up. Each time power is cycled to the
system, this number increments by one. This parameter is stored in EZMotion, and is not reset if the module is switched to
another drive. This parameter is read-only and can be found on the Errors view while online with PowerTools Pro.
EZMotion Power Up Time
PowerUpTime
The Power Up Time is the time elapsed since power has been cycled to EZMotion. The units for the parameter are Hours with
a resolution of 0.1 Hours. This parameter is read-only and can be found on the Errors view while online with PowerTools Pro.
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