Pump And Fan Load - Vacon NXP Hardware Manual

Technical information
5.2.1

Pump and fan load

Set all speeds to the same value (
quadratically increasing load.
The overload is now set as starting torque and as OL at maximum speed (the overload is now defined
as percent of torque at maximum speed).
The calculation of current is also here done assuming nominal flux in the motor from 0 to field
weakening point (current calculation according to "optimized flux curve" is not available).
800
700
600
500
400
300
200
100
max load
0
0 200
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n = n = n ) to have the typical pump and fan curve, i.e.
min base max
cont. load
400 600 800
Spe ed [rpm ]
Figure 35. Example: pump and fan load
1000 1200 1400
vacon • 39
1600
5