Lenze 8400 - Software Limit Positions

4 Detailed functions of the technology application
4.4 Monitoring functions
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Lenze · 8400 "Position Sequencer" technology application · Software manual · DMS 1.0 EN · 07/2014 · TD05
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Behaviour when hardware limit switches are active
If one of the two monitoring inputs is set to TRUE, in the Lenze setting the "TroubleQuickStop" error
response is triggered: Irrespective of the setpoint selection, the drive is brought to a standstill in the
deceleration time set for the quick stop function. Depending on the error response parameterised,
the drive can then only be traversed again after the error has been acknowledged.
4.4.2.2 Software limit positions
The parameterisable limit positions are used by the software to limit the traversing range.
 Stop!
The software limit positions are only evaluated and monitored if the home position is
known to the drive and the software limit positions for the respective operating mode
have been activated (see following table)!
If the drive is stopped at a high deceleration, depending on the mass inertia and friction,
an overvoltage in the DC bus may occur, and pulse inhibit is set as error response. The
use of a brake resistor can prevent this response.
Operating mode Software limit positions active (if home position is known)
Homing Yes
Manual jog Yes (adjustable in C01230 - bit 3)
Positioning Yes
Parameter
(Block)
Possible settings Info
C01229/1...2
(LS_MotionControl
Kernel)
-214748.3647 units 214748.3647 Positive and negative software limit position for
limiting the valid traversing range
• The positive software limit position must be set to
a greater value than the negative software limit
position!
Lenze setting: 0.0000 units
C00595/3...4
(LS_MotionControl
Kernel)
Response at the activation of limit position
monitoring
• Subcode 3: response at overtravelling the positive
software limit position (C01229/1).
• Subcode 4: response at overtravelling the
negative software limit position (C01229/2).
0No Reaction
1Fault
3TroubleQuickStop
4 WarningLocked
5 Warning
6Information