ID
Index Name / Setting
Unit Function
motor parameters. The d-current reference is
then calculated dependent on the speed AND
the required q-current: isd = f(n, isq_ref).
The inaccuracies with regard to the motor
parameters, the available voltage etc. can be
compensated by way of
P 436[0] - CON_FW_
SpeedScale
.
REL (3)
Internal LookUp Table (small table)
TABLE_MOT_GEN(4)
Table with a differentiation for motor or
regenerative mode
TABLE2(5)
Table with 8 data points at equidistant spacing
LUText(6)
External LookUp Table (large table)
LUT(7)
reserved
Table 7.28: Parameters for selecting field weakening (continue)
CAUTION!
Your system/motor may be damaged if put into operation in
an uncontrolled or inappropriate manner.
Improper conduct can cause damage to your system /
machine.
l
When configuring projects, it must be ensured that the
speed
NEVER
exceeds the value of the product of
P 458[0] - MOT_SNom
*
P 0328_CON_SCON_SMax
l
It should be ensured as a matter of principle that the
induced voltage does not exceed the voltage limits.
l
The maximum system speed must not be exceeded.
7.7.3 Variant 4 (TableMotGen)
A table that differentiates between motor and regenerative mode is used.
Activate table: P 435[0] - CON_FM_FWMode =
TABLE_MOT_GEN(4)
Parameter P-343 CON_FM_ImagTab can be used to configure 16 elements.
MOOG
ID No.: CB40859-001 Date: 11/2020
MSD Servo Drive - Device Help
149
7 Control
Index 0-7: Motor or classic table,
Index 8-15: Regenerative; the speeds are the same in both cases
The selection concerning as of what power the operation mode is “motor-oriented”
or “regenerative” is defined by P-459 MOT_PNom * P-348 CON_FM_SlipCon (%).
For small power values, linear interpolation between the tables is employed.
The voltage controller overlaid over the map (setting as described in variant 1).
7.7.4 Variant 5 (TABLE2)
“Table 2” has 8 data points for the field-weakening current component with an
equidistant spacing between two limit speeds.
Activate table: P 435[0] - CON_FM_FWMode =
TABLE2(5)
The lower limit speed is P 342[0] - CON_FM_SpeedTab[0], and the upper limit
speed is P 342[1] - CON_FM_SpeedTab[1]. Both numerical values for the limits
speeds are standardized relative to the nominal speed of the motor (MOT_SNom).
The table values for the field-weakening current component (-id) are specified via
P 343 - CON_FM_ImagTab[0..7] and standardized to sqrt(2)*CON_FM_Imag. The
interpolation values are calculated using linear interpolation.
P 343 - CON_FM_ImagTab[0] and CON_FM_ImagTab[7] are used for extrapolation
outside of the limit speeds.
The voltage controller overlaid over the map (setting as described in variant 1).