Siemens SINAMICS G150 Operating Instructions Manual page 469

Figure 9-9 Potential for energy savings
Legend for top characteristic:
H[%] = Head, P[%] = Flow pressure, Q[%] = Flow rate, V[%] = Volumetric flow
Legend for bottom characteristic:
P[%] = Power drawn by the conveyor motor, n[%] = Speed of conveyor motor
Interpolation points p3320 to p3329 for system characteristic with n = 100%:
P1...P5 = Power drawn, n1...n5 = Speed in accordance with variable speed motor
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
Functions, Monitoring, and Protective Functions
9.2 Drive Functions
467