Parameters
List of Parameters
1-176
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Description:
Sets the gain for resonance damping for V/f control.
Dependency:
Refer to: p1300, p1339, p1349
Note:
The resonance damping function dampens active current oscillations that frequency occur under no-load condi-
tions.
The resonance damping is active in a range of approximately 5 ... 90 % of the rated motor frequency (p0310), but
up to a maximum of 45 Hz.
For the open-loop control modes p1300 = 5 and 6 (textile sectors), the resonance damping is internally disabled in
order that the output frequency can be precisely set.
Description:
Sets the filter time constant for resonance damping for V/f control.
Dependency:
Refer to: p1300, p1338, p1349
Description:
Sets the proportional gain of the I_max voltage controller.
The I_max controller reduces the drive converter output current if the maximum current (r0067) is exceeded.
In the V/f operating modes (p1300) for the I_max control, one controller is used that acts on the output frequency
and one controller that acts on the output voltage. The frequency controller reduces the current by decreasing the
converter output frequency. The frequency is reduced down to a minimum value (equaling twice rated slip). If the
overcurrent condition cannot be successfully resolved using this measure, then the drive converter output voltage is
reduced using the I_max voltage controller. Once the overcurrent condition has been resolved, the drive is acceler-
ated along the ramp set in p1120 (ramp-up time).
Dependency:
In the V/f modes (p1300) for textile applications and for external voltage setpoints, only the I_max voltage controller
is used.
Notice:
When deactivating the I_max controller, the following must be carefully observed:
When the maximum current (r0067) is exceeded, the output current is no longer reduced, however, overcurrent
alarm messages are generated. The drive is shut down if the overcurrent limit (r0209) is exceeded.
Note:
The I_max limiting controller becomes ineffective if the ramp-function generator is deactivated with p1122 = 1.
p1341 = 0: I_max frequency controller deactivated and I_max voltage controller activated over the complete speed
range.
p1338[0...n]
V/f mode resonance damping gain / Vf Res_damp gain
Access level:
3
Calculated:
p0340 = 1,3,4
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Data set:
DDS, p0180
Min Max Factory
setting
0.00 100.00
0.00
p1339[0...n]
V/f mode resonance damping filter time constant / Vf Res_damp T
Access level:
4
Calculated:
p0340 = 1,3,4
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Data set:
DDS, p0180
Min Max Factory
setting
1.00 [ms]
1000.00 [ms]
20.00 [ms]
p1340[0...n]
I_max frequency controller proportional gain / I_max_ctrl Kp
Access level:
3
Calculated:
p0340 = 1,3,4
Data type:
FloatingPoint32
Can be changed:
U, T
Scaling:
-
Data set:
DDS, p0180
Min Max Factory
setting
0.000 0.500 0.000
Summary of Contents for CU230P-2 CAN
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