Positioning Sequence Control - Lenze 8400 Software Manual

2 Features of the technology application
2.5

Positioning sequence control

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• A profile describes a motion task that can be converted into a rotary motion of the motor shaft
by the Motion Control Kernel in the "Positioning" operating mode.
• A positioning process can be composed of a large number of profiles that are executed in a fixed
manner.
• For the 8400 TopLine inverter, 15 different profiles can be parameterised.
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A detailed explanation of all profile parameters can be found in the appendix in the
description for the "Positioning" action type.
2.5 Positioning sequence control
For the positioning sequence control, the L_Sequencer_1 FB is used. This FB processes a positioning
program on the basis of a sequence table (also referred to as "sequencer"), which can contain up to
100 references to so-called "Actions".
• An action comprises a clear functionality which is described with a few parameters.
• Different action types are available which serve to realise, for instance, program branching,
switching operation, waiting times and counters.
• A certain number of actions are available from every action type which can be parameterised
individually.
• An action can be called from several positions in the sequence table.
• After an action has been processed, the action entered in the sequence step of the sequence
table is automatically processed unless a branching causes a jump to another step in the
sequence table.
• Maximally one action can be processed per calculation cycle.
• The sequence table and the actions themselves are represented by parameters (codes with
subcodes).

A detailed description of the action types can be found in the appendix.
The L_Sequencer_1 FB is described in detail in the reference manual/online help for the
inverter in the "Function library »function blocks" chapter.

Note!
Additional logic operations in the application prevent the positioning program from
being started if the basic function "Manual jog" or "Homing" is activated. On the other
hand, it is avoided that these two basic functions can be activated if the positioning
program is being processed.
Lenze · 8400 "Position Sequencer" technology application · Software manual · DMS 1.0 EN · 07/2014 · TD05
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