Lenze i700 - Manual (Page 119)

Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
119
5 Motor control & motor settings
5.11 Setting control loops
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.11.6 Setting the field weakening controller (ASM)
Since the controlled system gain changes with the speed, the field weakening controller is corrected
via the speed.
For the automatic calculation of the controller parameters, the "Field weakening controller:
Calculate controller parameters" function is provided via object 0x2822 (or 0x3022 for axis B).
0x29E0 | 0x31E0 - Field weakening controller: Parameter
Subindex 2: Field controller: Reset time
Setting range
(min. value | unit | max. value)
Lenze setting
1.0 ms 6000.0 15.1 ms
 Write access  CINH  OSC  P  RX  TX Scaling: 1/10 UNSIGNED_16
Equations for calculating the gain and the reset time
Axis A Axis B Symbol Description Dimension unit
0x29E0:1 0x31E0:1 V
p
Field weakening controller gain Vs/V
- - V
path_Fs
Gain of the controlled path
- - p Number of pole pairs
- - n
transition
Speed at which the field weakening is approximately
initiated.
rpm
0x29E0:2 0x31E0:2 T
n
Field weak. contr. reset time s
- - T
EF
Equivalent time constant of the field control loop
0x29E3 0x31E3 T
filter
Filter time constant for the required voltage s
- - T
r
Motor rotor time constant
- - L
r
Motor rotor inductance
0x2C02:2 0x3402:2 L
h
Mutual motor inductance (ASM) H
0x2C01:3 0x3401:3 L
ss
Motor stator leakage inductance (ASM) or
motor stator inductance (SM)
H
0x2C02:1 0x3402:1 R
r
Motor rotor resistance (ASM) Ω
V
p
0
=
V
Distance_Fs
p n
Transition
2π
60
------- ⋅ ⋅
=
T
n
4
V
Distance_Fs
60
----------------------------- T
EF
T
Filter + ( ) ⋅ ⋅ =
T
EF
T
r
L
r
R
r
-----
L
h
L
ss +
R
r
------------------ ≈ = =
Sub. Name Lenze setting Data type
 1 Field weakening controller: Gain 0.000 Vs/V UNSIGNED_32
 2 Field weakening controller: Reset time 2000.0 ms UNSIGNED_32
Subindex 1: Field weakening controller: Gain
Setting range (min. value | unit | max. value) Lenze setting
0.000 Vs/V 2147483.647 0.000 Vs/V
 Write access  CINH  OSC  P  RX  TX Scaling: 1/1000 UNSIGNED_32