10-38 SIEMENS Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
PNU
Description Value range
[Unit]
Steps
No. indices
Factory
setting
Type
See
Change
(Access /
Status)
10.13 Closed-loop EMF control
P272
*
(G165)
Operating mode of closed-loop EMF control
0 Fault message F043
(”EMF too high for braking operation") is
active: If the EMF is too high when a torque direction change is
requested (i.e. if the calculated firing angle (K0101) for the
armature current in the new torque direction is > 165 degrees),
both torque directions are disabled. If, at the same time, the
absolute value of the armature current required in the new
torque direction is > 0.5% of rated converter DC current (P072),
fault message F043 is activated (see Section 10 for possible
fault causes).
1 Alarm A043 and automatic field reduction if EMF is too high in
braking operation.
If the EMF is too high in braking operation
(i.e. if the following
applies to the armature firing angle
α before limitation (K0101):
α > (α
W
– 5 degrees)), alarm A043 is activated (
α
W
is the
inverter stability limit according to P151 or 165 degrees with a
discontinuous armature current).
The field is reduced with activation of A043. This field reduction
is achieved by regulating the armature firing angle to (
αW – 5
degrees) by means of a P controller, whose output reduces the
EMF controller setpoint. "Field weakening operation by internal
closed-loop EMF control" (P081=1) must therefore be
parameterized so that the field reduction can take effect.
When a torque direction change is requested
, both torque
directions remain disabled until the field, and thus the EMF,
have been reduced accordingly (i.e. until the calculated firing
angle (K0101) for the armature current required in the new
torque direction is <165 degrees).
0 to 1
1
Ind: None
FS=0
Type: O2
P052 = 3
P051 = 40
Offline
P273
*
FDS
(G165)
Control word for EMF controller precontrol
0 EMF controller precontrol disabled, precontrol output = rated
motor field current (P102)
1 EMF controller precontrol is active
0 to 1
1
Ind: 4
FS=1
Type: O2
P052 = 3
P051 = 40
Offline
P274
*
FDS
(G165)
Set EMF controller I component to zero
0 Set controller I component to zero (i.e. to obtain pure P
controller)
1 Controller I component is active
0 to 1
1
Ind: 4
FS=1
Type: O2
P052 = 3
P051 = 40
Offline
P275
*
FDS
(G165)
EMF controller P gain
This parameter is automatically set during the field weakening optimization
run (P051=27).
0.10 to 100.00
0.01
Ind: 4
FS=0.60
Type: O2
P052 = 3
P051 = 40
Online
P276
*
FDS
(G165)
EMF controller reset time
This parameter is automatically set during the field weakening optimization
run (P051=27).
0.010 to 10.000
[s]
0.001s
Ind: 4
FS=0.200
Type: O2
P052 = 3
P051 = 40
Online
P277
*
FDS
(G165)
EMF controller droop
0.0 to 10.0
[%]
0.1%
Ind: 4
FS=0.0
Type: O2
P052 = 3
P051 = 40
Online
P280
FDS
(G165)
Filter time for setpoint for EMF controller precontrol [SW 1.9 and later]
Filtering of the EMF setpoint at the input of the EMF controller precontrol.
The purpose of this filter is to decouple the EMF controller precontrol from
the EMF controller.
0 to 10000
[ms]
1ms
Ind: 4
FS=0
Type: O2
P052 = 3
P051 = 40
on-line
P281
FDS
(G165)
Filter time for setpoint for EMF controller [SW 1.9 and later]
Filtering of the EMF setpoint at the input of the EMF controller.
The purpose of this filter is to decouple the EMF controller precontrol from
the EMF controller.
0 to 10000
[ms]
1ms
Ind: 4
FS=0
Type: O2
P052 = 3
P051 = 40
on-line
P282
FDS
(G165)
Filter time for actual value for EMF controller [SW 1.9 and later]
Filtering of actual EMF value at the input of the EMF controller.
0 to 10000
[ms]
1ms
Ind: 4
FS=0
Type: O2
P052 = 3
P051 = 40
on-line
P283
FDS
(G165)
Filter time for actual value for EMF controller precontrol
[SW 1.9 and later]
Filtering of actual speed value at the input of the EMF controller precontrol.
The purpose of this filter is to stabilize the EMF controller precontrol, even
when the actual speed signal is unsteady or distorted by harmonics.
0 to 10000
[ms]
1ms
Ind: 4
FS=0
Type: O2
P052 = 3
P051 = 40
on-line
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