Lenze 8400 motec - Manual (Page 111)

Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05 111
5 Motor control (MCTRL)
5.6 V/f characteristic control - energy-saving (VFCplusEco)
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5.6.4 Optimising the control mode
The V/f characteristic control - energy-saving (VFCplus) is generally ready for operation. It can be
adapted subsequently by adapting the characteristic and/or the drive behaviour.
Adapting characteristic
For the linear characteristic as part of the V/f characteristic control - energy-saving (VFCplusEco), it
is also possible (like in case of the standard V/f characteristic control) to match its curve to different
load profiles or motors by adapting the V/f base frequency ( C00015 ) and the V
min
boost ( C00016 ).
 Adapting the V/f base frequency ( 101)
 Adapting the Vmin boost ( 102)
Adapting drive behaviour
• Limitation of the maximum current by a current limitation controller (e.g. to prevent the motor
from stalling or to limit to the maximally permissible motor current).  Optimising the Imax
controller ( 103)
• Adaptation of the field frequency by a load-dependent slip compensation (improved speed
accuracy for systems without feedback).
• Improving the behaviour at high dynamic load changes . ( 112)
• Adapting the slope limitation for lowering the Eco function . ( 112)
• Optimising the cos/phi controller . ( 113)
Torque limitation
Limit the torque to a lower value.
 Torque limitation ( 104)

Note!
For an adaptation of the V
min
boost, the V/f characteristic control - energy-saving
(VFCplusEco) must not be set. For this purpose, set the V/f characteristic control
(VFCplus) .