4
01.99
4.7
Induction motor operation with induction motor
4-152
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Table 4-7
Parameter overview for IM operation (encoderless operation)
Parameters
No.
Name
Min.
Standard
Max.
Units
Effec-
tive
1451:8
P gain, speed controller IM (ARM)
0.0
0.3
9 999.999 Nms/rad
Imme-
diately
... the P gain of the speed controller in IM operation is set (operation without encoder).
Note:
The parameter is preset when executing the ”calculate controller data”/”calculate unlisted
motor” function.
1453:8
Integral action time, speed controller IM
(ARM)
0.0
140.0
6 000.0
ms
Imme-
diately
... the integral action time of the speed controller is set in IM operation (operation without en-
coder).
Note:
The parameter is preset when executing the ”calculate controller data”/”calculate unlisted
motor” function.
1458
Current setpoint open–loop controlled
range IM (ARM)
0.0
90.0
150.0
%
Imme-
diately
For pure IM operation (P1465 = 0), the drive is open–loop, current–frequency controlled below
the changeover speed (P1466).
In order to be able to accept a higher load torque, the motor current in this range can be in-
creased using P1458.
Note:
This is entered as a percentage of the rated motor current (P1103).
The current is limited to 90% of the current limit value (P1238).
1459
Torque smoothing time constant AM (ARM)
0.0
4.0
100.0
ms
Imme-
diately
... the pre–control value for the torque is smoothed (initial rounding–off).
Note:
In IM operation, a speed–torque–frequency pre–control is implemented due to the low dynamic
performance.
1465
Changeover speed MSD/IM (ARM)
0.0
100 000.0 100 000.0 RPM
Imme-
diately
Above this, the drive runs, in IM operation with the speed set in this parameter.
P1465 = 0
pure IM operation
P1466 < P1465 < n
max
mixed operation, MSD/IM
P1465 > n
max
only MSD operation
Note:
When IM operation is selected, only pulse frequencies (P1100) of 4 and 8 kHz are permissi-
ble.
The parameter is preset to 0 when first commissioning, if there is no motor measuring
system (P1006 = 98, P1027.5 = 1).
1466
Changeover speed, closed–loop/open–
loop control IM (ARM)
150.0
300.0
100 000.0 RPM
Imme-
diately
For pure IM operation (P1465 = 0), the drive is open–loop, current–frequency controlled below
the speed set using this parameter.
Note:
The parameter is preset when executing the ”calculate controller data”/”calculate unlisted
motor” function.
4 Commissioning