ID 442426.04
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15
Manual SD6
Set B46 Feedback ASM Observer
This parameter affects the accuracy of the SLVC-HP. For values that are too
large or too high, the stationary difference between the reference and actual
speed increases. The amount of feedback is an option to be reported to the
ASM observer how exact the machine constants
B54 leakage factor
,
B52
stator inductance
and
B53 stator resistance
were determined The smaller the
feedback selected, the more the ASM observer depends on these constants.
Number of poles of a synchronous servo motor or asynchronous motor.
If the number of pole pairs is specified for third-party motors, the value must be
multiplied by 2 before it is entered.
Correlation between the number of poles, nominal speed n
N
in rpms and the
nominal frequency f
N
in Hz of the motor:
B10
= 2·(f
N
· 60/n
N
).
Nominal speed in rpm for rotational motors, nominal speed in m/min for linear
drives, as per rating plate.
Nominal frequency of the motor as per rating plate. Parameters
B14
and
B15
define the pitch of the V/f characteristic curve and thereby the characteristics
of the drive. The V/f characteristic curve determines the frequency (
B15 f-
nominal
) at which the motor is operated at nominal voltage (
B14 V-nominal
).
The voltage and frequency can be increased linearly beyond the nominal point.
The upper voltage limit is the supply voltage that is applied. STOBER system
motors up to size 112 offer the option of star/delta operation. Delta operation at
400 V makes it possible to increase output by a factor of 1.73 with an extended
adjusting range and at a constant torque. The motor requires additional current
in this connection variant. Make certain the following points are observed:
•
The drive controller must be designed for the corresponding output (P
delta
= 1.73 · P
star
).
•
B12
(
I-nominal
) is parameterized to the appropriate nominal motor current
(I
delta
= 1.73 · I
star
).
The parameter indicates the degree to which the motor is magnetically
saturated at the nominal point. The parameter is important for the control
accuracy of control modes
2:ASM - vector control
and
3:ASM - Sensorless
vector control
in the field weakening range.
B10
motor-poles
version 0
E07 n-post-ramp
E91 n-motor
E15 n-motor-encoder B48
or
(
too small)
E91 n-motor
E15 n-motor-encoder B47
or
(
too large)
mech. frequency
B13
nominal motor speed
version 0
B15
nominal motor frequency
version 0
B55
magnetic saturation coefficient
version 0
