5motor control (mctrl) – Lenze 8400 User Manual
Page 175
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
175
5
Motor control (MCTRL)
5.5
V/f characteristic control - energy-saving (VFCplusEco)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Speed variations in no-load operation and with load for
speeds > rated speed.
Minimise speed oscillations with increasing the
oscillation damping field weakening (
).
is increased, the maximum output
voltage of the device is reduced!
Output voltage is too low. There is a too low maximum
torque in the high field weakening range.
Reduction of the oscillation damping field weakening
(
).
Caution: When
= 0, oscillation damping field
weakening is inactive. Thus, a maximum output voltage
is available but the tendency to speed oscillations in the
field weakening range at no-load operation and with
load increases.
Drive behaviour
Remedy