Computer Drive Installation Instructions

7 Drive Machine Data (SIMODRIVE Drive MD) 09.95
7.3.2 Drive MD (data description)
Inductance of series reactor
1119
Default value Lower input limit Upper input limit Units
0.0 0.0 65.0 mH
Active on
Power On
A series reactor is usually required for stable operation of the current controller on high-speed
special asynchronous motors or low-leakage asynchronous motors. In this way the inductance
of the reactor is taken into account in the current model.
Note:
This machine data only applies to main spindle drives.
P-gain current controller
1120
Default value Lower input limit Upper input limit Units
10.0 0.0 10 000.0 V/A
Active
at once
Input of proportional gain of current controller or automatic parameterization (initialization)
through operator action Calulate controller data.
Integral-action time current controller
1121
Default value Lower input limit Upper input limit Units
2000.0 0.0 8 000.0 µs
Active
at once
Input of control quantity "Integral-action time of current controller" or automatic
parameterization (initialization) through operator action Calulate controller data.
Note:
Integral arm can be disabled by entering the value T
N
= 0.
Symmetr. ref. model current control loop (up to SW 4)
1124
Default value Lower input limit Upper input limit Units
0.5 0.0 1.0 –
Active
at once
Input of the symmetrizing possibility for the reference model current control loop. This machine
data emulates the calculation deadtime of the current control loop. The emulation is calculated
as approximation of a broken deadtime (see graphic representation MD 1416). This allows the
behaviour of the reference model to be adapted to the controlled system behaviour of the clo-
sed P-controlled current control loop.
Caution:
This machine data is only relevant for Siemens-internal purposes and must not be modified.
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SINUMERIK 840C (IA)