Siemens SINAMICS S120 Function Manual page 193

Description of Vdc_max control
Figure 5-8
The switch-in level for Vdc_max control (r1282) is calculated as follows:
● When the function for automatically detecting the switch-in level is switched off (p1294=0)
● When the function for automatically detecting the switch-in level is switched on (p1294=1)
Function diagrams (see SINAMICS S120/S150 List Manual)
● 6320 Vdc_max controller and Vdc_min controller
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p1280[0...n] Vdc controller configuration (V/f)
● r1282 Vdc_max controller switch-in level (V/f)
● p1283[0...n] Vdc_max controller dynamic factor (V/f)
● p1285[0...n] Vdc_min controller switch-in level (kinetic buffering) (V/f)
● r1286 Vdc_min controller switch-in level (kinetic buffering) (V/f)
● p1287[0...n] Vdc_min controller dynamic factor (kinetic buffering) (V/f)
● p1290[0...n] Vdc controller proportional gain (V/f)
● p1291[0...n] Vdc controller integral action time (V/f)
● p1292[0...n] Vdc controller derivative action time (V/f)
● p1293 Vdc controller output limit (V/f)
● p1294 Vdc_max controller automatic detection ON signal level (V/f)
● p1295 Vdc_min controller time threshold (V/f)
● p1296[0...n] Vdc_min controller response (kinetic buffering) (V/f)
● p1297[0...n] Vdc_min controller speed threshold (V/f)
● r1298[0...n] CO: Vdc controller output (V/f)
Drive functions
Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5
Switching Vdc_max control on/off
r1282 = 1.15 * p0210 (device connection voltage, DC link).
r1282 = Vdc_max - 50 V (Vdc_max: overvoltage threshold of the Motor Module)
Vector V/f control (r0108.2 = 0)
5.4 Vdc control
193