Adapting The Slope Limitation For Lowering The Eco Function; Optimising The Cos/Phi Controller; Optimising The Control Mode - Lenze 8400 StateLine C Reference Manual

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

Note!
For an adaptation of the V
saving (VFCplusEco) must not be set. For this purpose, set the
control
Adapting the V/f base frequency
Adapting the Vmin boost
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).
 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

Adapting the slope limitation for lowering the Eco

Optimising the cos/phi

Torque limitation
Limit the torque to a lower value.
Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
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V/f characteristic control - energy-saving (VFCplusEco)
boost (C00016).
min
boost, the V/f characteristic control - energy-
min
(VFCplus).
( 132)
( 134)
Optimising the Imax controller
controller.
( 151)
Torque limitation
L
8400 StateLine C | Reference manual
( 136)
changes.
( 150)
function.
( 151)
( 138)
Motor control (MCTRL)
V/f characteristic
149