Lenze 8400 HighLine - Manual (Page 177)

Lenze · 8400 HighLine · Referenzhandbuch · DMS 10.0 EN · 06/2014 · TD05/TD14
177
5 Motor control (MCTRL)
5.5 V/f characteristic control - energy-saving (VFCplusEco)
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5.5.4 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 ( 161)
 Adapting the Vmin boost ( 163)
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 ( 164)
• 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 . ( 178)
• Adapting the slope limitation for lowering the Eco function . ( 179)
• Optimising the cos/phi controller . ( 179)
Torque limitation
Limit the torque to a lower value.
 Torque limitation ( 166)

Note!
Following successful motor parameter identification, the V/f base frequency ( C00015 )
and the V
min
boost ( C00016 ) as well as the slip constant for slip compensation ( C00021 )
are calculated automatically.
From version 12.00.00 onwards:
• Following successful motor parameter identification, the gain of the Imax controller
( C00073/1 ) is calculated automatically.
• If these parameters are not to be calculated, bit 4 of C02865/1 must be set to "1".
• Following successful motor parameter identification, other controller parameters
( C00011 , C00022 , C00966 , C00982 ) can be calculated automatically.
• If these parameters are to be calculated, bit 6 of C02865/1 must be set to "6".