Siemens SIMOTION D4x5-2 DP/PN Operating Instructions Manual page 308

SIMOCRANE CeCOMM commissioning and diagnostic program
8.8 Effective pendulum length
In two different hoisting heights, the associated effective pendulum lengths are measured, from
the known relationship between pendulum length and period duration. Assuming a linear
relationship, these two value pairs can be used to establish the relationship between the
hoisting height and the effective pendulum length.
An online connection to the system is recommended for this operation. The values for the two
hoisting heights then no longer need to be entered manually and the result, i.e. the two
parameters resolution and offset for calculating the effective pendulum length, can then be
transferred to the system. The offline values obviously need to be entered manually.
The effective pendulum length represents a significant quantity for the functionality of the sway
control system. The tool can also be used to subsequently check the pendulum length fast and
easily. The displayed pendulum length (row 4 in the table) should generally match that currently
displayed in screen 1 of the monitor.
Note
The oscillation experiments can be conducted with low amplitudes.
Nonetheless, the amplitudes must be high enough that the reversal points are still easily
recognizable.
The individual steps in the table are self-explanatory and closed with "F5-Send values"
(following figure). The settings of parameters P60 and P61 are determined during this process.
The integrated stopwatch can also be used individually with "F2-Start" and "F2-Stop".
Figure 8-42
308
Function parameter effective pendulum length
SC integrated STS, GSU
Operating Instructions, 07/2019, A5E48271265B AA