Rockwell-automation 2098-UWCPRG Ultraware Software User Manual Instrukcja Użytkownika Strona 43

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Rockwell Automation Publication 2098-UM001G-EN-P - February 2011 45
Configuring the Ultra3000 Drive Chapter 3
Current Limits
Positive The drive's positive current limit value.
Note: The value entered here is divided by the lesser of
intermittent drive current rating and intermittent current rating of
the motor, and is stored on the drive as a percentage. If a different
motor is selected for the drive, with a different current capacity,
this parameter value changes.
During runtime, the drive limits positive current to the lesser of:
the Positive Current Limit (this value),
the analog current limit Input (an analog input of the drive that
limits current proportionately to its value),
the Intermittent Current rating of the drive (a fixed value, hard-
coded into the drive), or
the Intermittent Current rating of the motor (stored in the motor
database).
Negative The drive's negative current limit runtime value.
Note: The value entered here is divided by the lesser of
intermittent drive current rating and intermittent current rating of
the motor, and is stored on the drive as a percentage. If a different
motor is selected for the drive, with a different current capacity,
this parameter value changes.
During runtime, the drive limits negative current to the lesser of:
the Negative Current Limit (this value),
the analog current limit Input (an analog input of the drive that
limits current proportionately to its value),
the Intermittent Current rating of the drive (a fixed value, hard-
coded into the drive), or
the Intermittent Current rating of the motor (stored in the motor
database).
Position Limits
Positive Decel Distance The stopping distance used when the drive encounters a positive
overtravel limit.
Negative Decel Distance The stopping distance used when the drive encounters a negative
overtravel limit.
Enable Soft Limits Select:
On: Causes the drive to compare the motor feedback position to
the Positive and Negative Soft Limits to determine if the drive
has exceeded an overtravel limit.
Off: Turns off software overtravel limit checking.
Positive Soft Limit If the motor feedback position is greater than this value, the drive
has exceeded the soft overtravel limit.
Negative Soft Limit If the motor feedback position is less than this value, the drive has
exceeded the soft overtravel limit.
Speed Functions
Zero Speed This value creates a plus or minus (+/-) range, or window, around
the zero velocity. If the motor feedback velocity falls within this
range, the Zero Speed flag is (or remains) set.
Note: You can assign the Zero Speed, In Speed Window or Up To
Speed flags to digital outputs and control execution of your
process based on the state of these flags.
In Speed Window This value creates a plus or minus (+/-) range, or window, around
the programmed velocity. If the motor feedback velocity falls
within this range, the In Speed Window flag is (or remains) set.
Up to Speed This value sets a velocity level. If the motor feedback velocity is
greater than or equal to this value, the Up To Speed flag is (or
remains) set.
Parameter Description
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