8400 StateLine C | Reference manual
Motor control (MCTRL)
V/f characteristic control (VFCplus)
136 L Firmware ≤ 11.00 - DMS 8.0 EN - 10/2011
5.4.3.3 Optimising the Imax controller
Using the Lenze setting of the current limitation controller, the drive is stable:
Most applications do not require optimisation.
The setting of the current limitation controller must be adapted if
power control including great moments of inertia is performed.
– Recommendation: Increase of the reset time Ti (C00074/1
) of the I
max
controller.
vibrations occur in the V/f control (VFCplus + encoder) mode during the intervention of
the current limitation controller.
– Recommendation: Increase of the reset time Ti (C00074/1
) of the I
max
controller.
overcurrent errors (e.g. OC3) occur due to load impulses or too high acceleration ramps.
– Recommendation: Reduction of the gain Vp (C00073/1
) and reset time Ti (C00074/1)
of the I
max
controller.
Parameter Info Lenze setting
Value Unit
C00073/1 VFC: Vp Imax controller 0.25
C00074/1
VFC: Ti Imax controller 65 ms
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