A
A.1
Parameter list
A-832
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
1415:8
Damping, reference model speed (ARM SRM)
Damping, reference model velocity (SLM)
Min
Standard
Max
Unit
Data type
Effective
0.5
1.0
5.0
–
Floating Point
immed.
Note:
The reference model is described in:
References: /FBA/, Description of Functions, Drive Functions, Section DD2
1416
Balancing, reference model, speed (ARM SRM)
Balancing, reference model, velocity (SLM)
Min
Standard
Max
Unit
Data type
Effective
0.0
0.0
1.0
–
Floating Point
immed.
Note:
The reference model is described in:
References: /FBA/, Description of Functions, Drive Functions, Section DD2
1417:8
n_x for ’n_act < n_x’ signal
Min
Standard
Max
Unit
Data type
Effective
0.0
120.0
100000.0
m/min
Floating Point
immed. (SLM)
0.0
6000.0
100000.0
rpm
Floating Point
immed. (SRM ARM)
The threshold speed or the threshold velocity (SLM) for the output signal ”n_act < n_x” is de-
fined using this parameter.
1418:8
n_min for ’n_act < n_min’ signal
Min
Standard
Max
Unit
Data type
Effective
0.0
0.3
100000.0
m/min
Floating Point
immed. (SLM)
0.0
5.0
100000.0
rpm
Floating Point
immed. (SRM ARM)
The threshold speed or the threshold velocity (SLM) for the output signal ”n_act < n_min” is de-
fined using this parameter.
1421:8
Time constant, integrator feedback (n controller)
Min
Standard
Max
Unit
Data type
Effective
0.0
0.0
1000.0
ms
Floating Point
immed.
The integrator of the speed controller is re-parameterized via a feedback element to a PT1 filter
(1st order lowpass characteristics). The PT1 filter time constant can be set via P1421.
The following is valid:
P1421 < 1.0 ––> the PT1 filter is not active, the pure integrator is effective
P1421 >= 1.0 ––> the PT1 filter is active and has replaced the pure integrator
Applications:
Movement at zero setpoint with a dominant stiction can be suppressed but with the disadvan-
tage that a setpoint-actual value difference remains. This can result in, for example, an oscilla-
tion of a position-controlled axis at standstill (stick-slip effect) or overshoot with micrometer
steps.
Prevents excessive stress for axes which are mechanically rigidly coupled (e.g. for synchronous
spindles, master-slave axes).
1426:8
Toler.bandwidth f.’n_set = n_act’ signal
Min
Standard
Max
Unit
Data type
Effective
0.0
1.0
10000.0
m/min
Floating Point
immed. (SLM)
0.0
20.0
10000.0
rpm
Floating Point
immed. (SRM ARM)
The tolerance bandwidth for the ”n_set = n_act” output signal is defined using this parameter.
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