Siemens Sinamics G120 Series - p1245[0...2] Switch on level kin. buffering; KIB ON level; r1246[0...2] CO: Switch-on level kin buffering; KIB ON level; p1247[0...2] Dyn. factor of kinetic buffering; Dyn. factor of KIB; p1250[0...2] Gain of Vdc-controller; Gain of Vdc ctrl.

Parameters
List of Parameters
1-148
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Enter switch-on level for kinetic buffering (KIB) in [%] relative to supply voltage (P0210).
Warning: Increasing the value too much, may interfere with the drive normal operation.
Note: P1254 has no effect on the switch-on-level for KIB.
Description: Displays switch-on level of kinetic buffering (KIB, Vdc min controller).
If the dc-link voltage drops below the value in r1246, kinetic buffering will be activated. That means the motor fre-
quency will be reduced in order to keep Vdc within the valid range.
If there is not enough regenerative energy, the converter trips with undervoltage.
Description: Enters dynamic factor for kinetic buffering (KIB, Vdc-min controller).
P1247 = 100 % means parameters P1250, P1251 and P1252 (gain, integration time and differential time) are used
as set. Otherwise, these are multiplied by P1247 (dynamic factor of Vdc-min).
Note: Vdc controller adjustment is calculated automatically from motor and inverter data.
Description: Enters gain for Vdc controller.
Description: Enters integral time constant for Vdc controller.
p1245[0...2] Switch on level kin. buffering / KIB ON level
PM240 Access level: 3 P-Group: - Data type: Unsigned16
Quick comm. NO Active: YES Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
65 [%] 115 [%] 76 [%]
p02102
100
[%] p1245
= [V] r1246 ⋅⋅
r1246[0...2] CO: Switch-on level kin buffering / KIB ON level
PM240 Access level: 3 P-Group: - Data type: Floating Point
Unit: [V] Data set: DDS
p1247[0...2] Dyn. factor of kinetic buffering / Dyn. factor of KIB
PM240 Access level: 3 P-Group: - Data type: Unsigned16
Quick comm. NO Active: YES Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
10 [%] 200 [%] 100 [%]
p1250[0...2] Gain of Vdc-controller / Gain of Vdc ctrl.
PM240 Access level: 4 P-Group: - Data type: Floating Point
Quick comm. NO Active: YES Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
0.00 10.00 1.00
p1251[0...2] Integration time Vdc-controller / Int. time Vdc ctrl
PM240 Access level: 4 P-Group: - Data type: Floating Point
Quick comm. NO Active: YES Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
0.1 [ms] 1000.0 [ms] 40.0 [ms]