Ta "Switch-Off Positioning - Lenze 8400 StateLine C Reference Manual

8400 StateLine C | Reference manual
Technology applications

TA "Switch-off positioning"

7.3 TA "Switch-off positioning"
This technology application is available from version 04.00.00!
The basic principle of this technology application is to travel to a switch-off sensor (e.g. a
limit switch) in a speed-controlled manner and to stop as close as possible at this position.
Unlike other positioning controls, the switch-off positioning neither has a position
feedback nor calculates the path in advance. Thus, the accuracy that can be achieved
depends on various factors such as the speed at which the switch-off sensor is advanced.
In addition, a pre-switch off can be implemented which requires a sufficient number of
unassigned digital inputs on the controller which can be used to connect other sensors for
the additional stop positions. These sensors effect a reduction in speed before the last
switch-off sensor is reached.
Features
 Pre-configured control modes for terminals and bus control (with predefined process
data connection to the fieldbus)
 Free configuration of input and output signals
 Offset, gain, and negation of main setpoint & additional setpoint
 Up to 15 fixed setpoints for speed and ramp time
 Adjustable setpoint ramp times
 Freely selectable, variable ramp shape
 Automatic holding brake control
 Quick stop (QSP) with adjustable ramp time
 Integrated disposable "GeneralPurpose" functions:
Analog switch, arithmetic, multiplication/division, binary delay element, binary logic,
analog comparison, D-flipflop
 Interface to the safety module (optional)
 Integration of encoder feedback
 Switch-off sensor management for the implementation of a pre-switch off
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Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011