UserDefinedStopMode

General

Type

ES

Offline editable

Yes

Devices supporting the parameter

Lexium LXM52 Drive, Lexium LXM52 Linear Drive,

Lexium LXM62 Drive, Lexium LXM62 Linear Drive,

Lexium ILM62 Drive Module

Traceable

Yes

Functional Description

UserDefinedStopMode defines which start values are used for the profile to stop the drive in user-defined stop.

User-defined stop is triggered when:

oDiagnostic messages with reaction BD2 occur.

oControllerEnable is switched off with ControllerEnableStopMode = UserDefinedStop / 0 .

Based on the start values, a profile defined via the ControllerStopDec and ControllerStopJerk parameter is triggered to stop the drive.

oAs a result, the current limit defined by UserCurrentLimit is disabled and the current limit defined by DriveStopCurrentLimit is enabled.

Depending on UserDefinedStopMode, the start values result from:

 

Start with actual values

Start with reference values

Position start value

Position

RefPosition

Velocity start value

Min(Velocity; RefVelocity)

RefVelocity

Acceleration start value

0

RefAcceleration

In Start with actual values mode, the smaller value of RefVelocity and Velocity is used for the velocity start value as long as RefVelocity and Velocity have the same sign. The velocity start value is set to zero if RefVelocity and Velocity have different signs. The acceleration start value is set to zero because the calculated value of the actual acceleration is too inaccurate.

In Start with reference values mode, the start values are used as in Start with actual values if TrackingDeviation exceeded the 10x value of TrackingDeviationLimit during profile start. Otherwise, the drive behaves as in ControllerStop except that current limits with UserCurrentLimit are disabled during stopping. The drive is then available for MaxDrive­PeakCurrent in order to move along the defined reference value profile when required.

NOTICE

UNINTENDED MOTION OF THE DRIVE

oIf the current has been limited with UserCurrentLimit in normal operation and the drive has been stopped mechanically and has been pushed out if its defined path, an acceleration of the drive can occur when triggering UserDefinedStop in the Start with reference values mode. This acceleration is caused by disabling UserCurrentLimit during the UserDefinedStop start-up if the drive with the higher current is able to follow the defined reference value course again.

oIn this case, we suggest the Start with actual values mode or the reconfiguration to a different reaction (for example, reaction BD1 BestPossibleStop).

oUserDefinedStopMode must be used with actual values if the drive can collide with obstacles and the maximum current is reduced with UserCurrentLimit.

Failure to follow these instructions can result in equipment damage.

The UserDefinedStopMode Start with actual values does not make sense for asynchronous motors without encoder (in open-loop V / f control mode, ControlMode = open-loop control / 1).