Safety and commissioning information for Ex areas
14.2 Dry-running protection for centrifugal pumps by active power monitoring
SIMOCODE pro
System Manual, 05/2019, A5E40507475002A/RS-AD/004
321
Note
Log file
For verification purposes, we recommend generating a log file (see Chapter "Dry
-running
protection of centrifugal pumps" in the manual Parameterizing SIMOCODE p
ro
https://support.industry.siemens.com/cs/ww/en/view/109743958)) after setting the
parameters (whether done as a teach
-in or by means of direct entry using SIMOCODE ES).
Note
Activating the dry-running protection function
This function i
s deactivated in the as-delivered state.
The function is activated following a successful run
-
through with the wizard. The response of
the dry
-running protection at P
TRIP
< (lower threshold) is set to "Trip".
Note
Default setting for response
The respo
nse of the dry-running protection at P
TRIP
< (lower threshold) is preset to "Trip".
Note
Setting the warning level
You have the option of configuring an additional warning level for undershooting of active
power using the "Active power monitoring" func
tion (see Chapter "Active power monitoring"
in the manual Parameterizing SIMOCODE pro
(
https://support.industry.siemens.com/cs/ww/en/view/109743958)). This becomes effective
fore the trip level P
TRIP
is undershot.
However, this warning level is of no relevance with respect to approval for use
in hazardous
Manufacturer's instructions on the centrifugal pump
Observe the manufacturer's instructions for the centrifugal pump, which must be protected
against dry running, in particular the characteristic curve which supplies the information on
the minimum flow rate and possible information for the procedure during startup and
shutdown of the pump / motor.
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