Figure 15: Alarm reset time
NOTE
The alarm reset time applies to all alarms. This also applies to shock events, tempera‐
ture alarms, the operating hours and the boot cycle counter.
The alarm delay, on the other hand, is not applied to shock events, the operating hours
and the boot cycle counter.
9.3
Vibration monitoring
Before starting vibration monitoring, please observe the general settings of the vibra‐
tion analysis described in
. Maximum and minimum values since the last
reset are output for all indication values in addition to the current values. These can be
used as a basis for configuring limit values. The minimum and maximum values can be
reset via associated indices.
9.3.1
Monitoring in time range
Indication values in the time range provide very good indications of the general condi‐
tion of machines. A change in the indication values in the time range shows that the
strength of the vibration (
a-RMS
,
v-RMS
,
Variance
) and/or the signal shape (
Skewness
,
Kurtosis
,
Peak to peak
,
Shape factor
,
Crest factor
,
Impulse factor
) have changed. For vibration
monitoring, the sensor provides not only the current values but also the minimum
and maximum values that have occurred since the last reset. These can be used,
for example, to derive a range of values in which the plant is in normal operation.
In addition, the indication values can be monitored with definable limit values. The
corresponding indices can be found in the IO-Link supplement. In this way, values can
be read out for further processing and overshots and undercuts can be transferred to
the process data as alarms.
OPERATION
9
8028041/2022-08-16 | SICK
O P E R A T I N G I N S T R U C T I O N S | MPB10
31
Subject to change without notice
