Syscom Video MR3000C User Manual page 56

Trigger recording
Figure 4.4.3 shows the possibilities for the choice of the alarm limit, when the alarm has been
selected on the trigger recording. The possibilities are:

Level

DIN 4150-3 (Germany)

SN 640312 (Switzerland)

Circulaire du 23/07/1986 (France)

User defined
In case of "Level", a threshold level for the 3 channels must be defined. The alarm is triggered if at
least one of the three axes exceeds the limit value.
In all the other four cases, not only the velocity peaks are taken into account but also the frequency
values. In other words, the regulations define velocity limits that are depending on the frequency.
For this reason, the maximum peak and the relative dominant frequency constitutes a unique point
to be placed on the graph and to be compared with the limit curve. In Fig. 4.4.4, the limit values
defined by the German curve for the vibration at foundation are shown. In general, the international
regulations define limits that are generally based on location, building type and expected vibration
type.
MR3000CMR3000C_TR_v2.0_rev1.odt
Figure 4.4.3. Subsection dedicated to the alarm settings.
subject to technical change without notice
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