Magnetization Characteristic (Field Characteristic) - Siemens 6RA70 Series Instructions Manual

PNU Description
P119 Rated speed
Speed at which an actual EMF value as set in parameter P118 is reached at
FDS
full field (according to parameter P102).
This parameter is set automatically during the optimization run for field
weakening (P051=27) and specifies in this case the field-weakening
(G165)
activation limit speed.
Note:
As regards the closed-loop field-weakening control, only the ratio between
P118 and P119 is relevant. When the setting in P100, P101 or P110 is
changed subsequently, the field-weakening optimization run need not be
repeated. However, P119 then no longer defines the field-weakening
activation limit speed.
When the setting in parameter P102 is changed subsequently, the field-
weakening optimization run must be repeated, the same applies if the
maximum speed setting is subsequently re-adjusted.

Magnetization characteristic (field characteristic)

Parameters P120 to P139 determine the curve shape of the magnetization characteristic (field characteristic) in normalized representation
(see example field characteristic below for further details).
Note:
When the setting in parameter P102 is changed subsequently, the field-weakening optimization run must be repeated, because this alters
the degree of saturation and thus the shape of the magnetization characteristic. (When parameter P100, P101 or P110, or the maximum
speed adjustment, is subsequently altered, the settings in P120 to P139 remain the same, but the values in P118 and/or P119 are
changed).
r120 Field current for 0% motor flux (field characteristic, point no. 0)
FDS
(G165)
(G166)
P121 Field current for 5% motor flux (field characteristic, point no. 1)
FDS
(G165)
(G166)
P122 Field current for 10% motor flux (field characteristic, point no. 2)
FDS
(G165)
(G166)
P123 Field current for 15% motor flux (field characteristic, point no. 3)
FDS
(G165)
(G166)
P124 Field current for 20% motor flux (field characteristic, point no. 4)
FDS
(G165)
(G166)
P125
Field current for 25% motor flux (field characteristic, point no. 5)
FDS
(G165)
(G166)
P126 Field current for 30% motor flux (field characteristic, point no. 6)
FDS
(G165)
(G166)
P127 Field current for 35% motor flux (field characteristic, point no. 7)
FDS
(G165)
(G166)
P128 Field current for 40% motor flux (field characteristic, point no. 8)
FDS
(G165)
(G166)
P129 Field current for 45% motor flux (field characteristic, point no. 9)
FDS
(G165)
(G166)
P130 Field current for 50% motor flux (field characteristic, point no. 10)
FDS
(G165)
(G166)
10-24
Value range
[Unit]
Steps
0.0 to 199.9
[%]
0.1%
0.0
[% of P102]
0.1% of P102
0.0 to 100.0
[%]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
0.0 to 100.0
[% of P102]
0.1% of P102
SIEMENS Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
No. indices See
Factory Change
setting (Access /
Type Status)
Ind: 4 P052 = 3
FS=100.0 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
Type: O2
Ind: 4 P052 = 3
FS=3.7 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=7.3 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=11.0 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=14.7 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=18.4 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=22.0 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=25.7 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=29.4 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=33.1 P051 = 40
Type: O2 Offline
Ind: 4 P052 = 3
FS=36.8 P051 = 40
Type: O2 Offline