12 basic drive functions – Lenze E94AxPExxxx User Manual
Page 544
12
Basic drive functions
12.11
Limiter
544
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
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12.11.2.2 Triggering behaviour of software limit position monitoring
can be used to select the triggering behaviour of the software limit position monitoring of
non-positon-controlled basic functions:
Selection "0: Based on set value"
• If the basic functions "
" and "
" are used, the monitoring responds
if the drive is outside the software limit positions and a command to travel in the "forbidden"
direction is given (depending on the speed setpoint of the application).
• For all other non-position-controlled basic functions, the monitoring does not respond if a
software limit position is exceeded.
Selection "1: Based on set and actual value"
• For all non-position-controlled basic functions, the monitoring responds if the actual position
exceeds a software limit position.
• The monitoring also responds in the function states "Controller not ready" and "Error". This
may cause the monitoring to trigger permanently if the drive traverses to a software limit
position and controller inhibit is set subsequently because the actual position slightly
changes around the software limit position.
• If the basic functions "
" are used, the monitoring also
responds if the drive is outside the software limit positions and a command to travel in the
"forbidden" direction is given (depending on the speed setpoint of the application).
Note!
If the position-controlled basic functions "
" are used, the monitoring responds independently of the triggering behaviour
parameterised in
if one of the following cases occurs:
• The setpoint position exceeds a software limit position.
• A travel command is given which would cause the drive to leave the permissible travel
range.
• The drive is outside the software limit positions and a command to travel in the
"forbidden" direction is given.
If the software limit position monitoring is triggered, the error response parameterised
in
is carried out.