Lenze 931E/K Small Drives Control - Manual (Page 176)

Appendix
Timing charts
10
l
176 SW−HB 13.0002−EN 4.1
10.5 Timing charts
The following diagrams show some typical 931E/K servo positioning controller
applications and the corresponding timings of the digital inputs and outputs. Since some
times depend on the operating state of the controller, sometimes only guide values can be
indicated.In these cases, the control must query additional status messages of the 931E/K.
The times indicated in the diagrams have a tolerance of ± 100
ms. This tolerance must be
considered in addition to the times indicated in the timing diagrams!
The 931E/K servo positioning controller is equipped with a sequence control with a time
base of 1.6 msec. The digital input and output states are cyclically detected and updated.
The cycle time of the PLC or control must be selected < (1.6 msec – 100
μs) = 1.5 msec to
ensure that the PLC can detect all messages from the 931E/K. All control signals from the
PLC must be active > (1.6 msec + 100
μs) = 1.7 msec to ensure that the 931E/K will identify
them correctly.
Example:
PLC with t
cycle
= 1 msec → set the PLC outputs for at least 2 x t
cycle
= 2 msec