Lenze 8400 HighLine C Series - 5.6.3.2 Optimising the setting of the speed controller

8400 HighLine | Parameter setting & configuration
Motor control (MCTRL)
Sensorless vector control (SLVC)
140 L Firmware ≤ 05.00 - DMS 4.2 EN - 02/2010
5.6.3.2 Optimising the setting of the speed controller
The speed controller is designed as a PI controller.
 In the Lenze setting, the configuration of the speed controller provides robustness and
moderate dynamics.
Speed controller gain Vp
Gain Vp (C00070/1
) of the speed controller is specified in a scaled representation which
permits similar parameter setting that is almost independent of the power of the motor or
the inverter:
If the rated data of the motor and the mass inertia of the drive system are known, we
recommend the following setting:
[5-13] Recommendation for the setting of the gain of the speed controller
 Tip!
Values recommended by Lenze for the setting of the (proportional) gain:
• For drive systems without feedback: Vp = 6 … 25
• For drive systems with a good disturbance behaviour: Vp > 15
In this case, we recommend the optimisation of the dynamic performance of
the torque controller.
Parameter Info Lenze setting
Value Unit
C00070/1 SLVC: Vp speed controller 15.00
C00071/1
SLVC: Ti speed controller 100.0 ms
V
P
= Gain of the speed controller (C00070/1)
M
N
= Rated motor torque
n
N
= Rated motor speed
V
P
= Gain of the speed controller (C00070/1)
T
M
= Time constant for the acceleration of the motor
M
N
= Rated motor torque
n
N
= Rated motor speed
J
drive, total
= Total moment of inertia of the drive
V
P
M
N
n
N
--------
%[]=
V
P
1,5 ... 3
T
M
s[]
001s[],
--------------------
⋅≈
T
M
s[]
2 π n
N
min
1–
[]⋅⋅
M
N
Nm[]60⋅
--------------------------------------------
J
Antrieb gesamt(,)
kgm
2
[]⋅=
M
N
Nm[]
P
N
W[]60⋅
2 π n
N
min
1–
[]⋅⋅
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