Siemens SINAMICS S Series List Manual page 376

Parameters
List of parameters
p1340[0...n] I_max frequency controller proportional gain / I_max_ctrl Kp
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: V/f open-loop control
Not for motor type: -
Min
0.000
Description: Sets the proportional gain of the I_max voltage controller.
The I_max controller reduces the drive converter/inverter 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 de-activating 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 de-activated with p1122 = 1.
p1341 = 0: I_max frequency controller de-activated and I_max voltage controller activated over the complete speed
range.
p1341[0...n] I_max frequency controller integral time / I_max_ctrl Tn
VECTOR Can be changed: U, T
Data type: Floating Point
P-Group: V/f open-loop control
Not for motor type: -
Min
0.000 [s]
Description: Sets the integral time for the I_max frequency controller.
Dependency: Refer to: p1340
r1343 I_max controller frequency output / I_max_ctrl f_outp
VECTOR Can be changed: -
Data type: Floating Point
P-Group: V/f open-loop control
Not for motor type: -
Min
- [RPM]
Description: Displays the effective frequency limit.
Dependency: Refer to: p1340
1-376
Calculated: CALC_MOD_CON
Dynamic index: DDS, p0180
Units group: -
Max
0.500
Calculated: CALC_MOD_CON
Dynamic index: DDS, p0180
Units group: -
Max
50.000 [s]
Calculated: -
Dynamic index: -
Units group: 3_1
Max
- [RPM]
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Access level: 3
Func. diagram: 1690
Unit selection: -
Expert list: 1
Factory setting
0.000
Access level: 3
Func. diagram: 1690
Unit selection: -
Expert list: 1
Factory setting
0.300 [s]
Access level: 3
Func. diagram: 1690
Unit selection: p0505
Expert list: 1
Factory setting
- [RPM]