38
FXMP25 User Guide
www.controltechniques.com
Issue Number: 3
In standalone mode, if the field controller is to be used in flux mode Pr
64
= On (1), this
parameter would become the external flux reference of the field control loop.
When Pr
64
= 0FF (0), this is the reference selected when terminal
Ion
is open.
Programmable value of the maximum flux demand of the field weakening voltage loop.
The maximum value of this parameter depends upon the setting of the rated current
Pr
70
.
MAX_FIELD_FLUX = 100 x 25 / Pr
70
. For values of Pr
70
less than 20.8 A the
MAX_FIELD_FLUX will be limited to 120 %.
Maximum voltage demand when field voltage mode is selected Pr
75
= On (1).
The minimum value of flux demand to prevent excessive field weakening, and hence
over speeding. Minimum voltage demand when field voltage mode is selected Pr
75
=
On (1).
This parameter will be set to the field current of the motor and will define the 100 % point
for the field controller.
67
Field economy level
Coding
Bit
FI
Txt
VM
DP
ND
US
RW
BU
PS
1
1
1
1
Range
0.0 to 100 %
Default
25.0 %
Update rate
Background read
68
Maximum flux / voltage limit
Coding
Bit
FI
Txt
VM
DP
ND
US
RW
BU
PS
1
1
1
1
1
Range
0 to MAX_FIELD_FLUX
Default
100.0 %
Update rate
Background read
69
Minimum flux / voltage limit
Coding
Bit
FI
Txt
VM
DP
ND
US
RW
BU
PS
1
1
1
1
1
Range
0.0 to MAX_FIELD_FLUX
Default
50.0 %
Update rate
Background read
70
Rated field current
Coding
Bit
FI
Txt
VM
DP
ND
US
RW
BU
PS
2
1
1
1
Range
0.00 to 25.00A
Default
Eur: 5.00, USA: 25.00
Update rate
Background read
