Functions
8.21 General monitoring functions and messages
Control Units CU240S
8-148 Operating Instructions, 11/2006, A5E00766042B AA
For the load torque monitoring function, the actual frequency/torque characteristic is
compared with the programmed frequency/torque characteristic (refer to P2182 … P2190). If
the actual value lies outside the programmed tolerance bandwidth, then, depending on
parameter P2181, either warning A0952 or fault F0452 is generated. Parameter P2192 can
be used to delay the output of the warning or fault message. This avoids erroneous alarms
which could be caused by brief transient states (see figure below).
3
3
3
3
3
3
3
3
W
$
3
3


3
%LW
3
3
7RUTXH>1P@
$FWXDO
WRUTXH
)UHTXHQF\
>+]@
Figure 8-78 Load torque monitoring (P2181 = 1)
The frequency/torque tolerance bandwidth is defined by the gray shaded area in the figure
below. The bandwidth is determined by the frequency values P2182 … P2184 including the
max. frequency P1082 and the torque limits P2186 … P2189. When defining the tolerance
bandwidth it should be ensured that a specific tolerance is taken into account in which the
torque values are allows to vary corresponding to the application.
To Next Page
Loading...
Need help?
General
