PRÜFTECHNIK Condition Monitoring GmbH VCRFBR24 Manuale Utente

VIBCONNECT RF 05.2012

... a sensor unit “wakes up” from its idle time?
•  The sensor unit performs the measurements, using the current 

measuring configuration, and transfers the data via radio signal 
to the bridge. The bridge confirms receipt of the data and sends 
a new measuring configuration to the sensor unit, if this is re-
quired. Subsequently, the sensor unit returns to idle mode.

... the radio channel is used by another sensor unit?
•  The sensor unit waits for 2 seconds and then checks again 

whether the radio channel is available.

...  the power supply to the sensor unit has been temporarily inter-

rupted?

•  When the sensor unit is switched off, the measuring configura-

tion data is lost. When the unit is switched on again, it automati-
cally requests a new configuration from the bridge. After this 
configuration has been received, the required measurements are 
performed and the data is sent to the bridge.

... a sensor unit is within the radio range of two bridges?
•  Each sensor unit is assigned to one bridge in the OMNITREND 

software. All requests sent by the sensor unit are only replied to 
by this bridge.

... a sensor unit is installed in an existing radio cell?
•  Before installing the sensor unit, you must locate the point 

with the best radio reception. To do this, set the sensor unit to 
commissioning mode to measure the reception field strength at 
various possible locations of installation. Then install the sensors 
on the machine, connect them to the sensor unit and start the 
system. In a further step, configure the respective measurement 
locations in OMNITREND. The relevant measuring configuration 
is then transmitted to the bridge with the best radio reception 
field strength (see also '5.7 Installing additional sensor unit', 
page 63).