Efficient Networks S120 manual For reference model, Vector control 4.6 Droop

Vector control 4.6 Droop

The reference model can also be emulated externally and its output signal injected via p1437.

Function diagrams (see SINAMICS S List Manual)

●6031 Pre-control balancing for reference/acceleration model

●6040 Speed controller

Overview of key parameters (see SINAMICS S List Manual)

●p0311[0...n] Rated motor speed

●r0333[0...n] Rated motor torque

●p0341[0...n] Motor moment of inertia

●p0342[0...n] Ratio between the total moment of inertia and that of the motor

●r0345[0...n] Nominal motor starting time

●p1400.2[0...n] Acceleration pre-control source

●p1428[0...n] Speed precontrol deadtime for balancing pre-control speed

●p1429[0...n] Speed pre-control time constant for balancing

●p1496[0...n] Acceleration precontrol scaling

●r1518 CO: Accelerating torque

For reference model

●p1400.3[0...n] Reference model speed setpoint I component

●p1433[0...n] Speed controller reference model natural frequency

●p1434[0...n] Speed controller reference model damping

●p1435[0...n] Speed controller reference model deadtime

●r1436 CO: Speed controller reference model speed setpoint output

●p1437[0...n] CI: Speed controller reference model I component input

4.6Droop

Droop (enabled via p1492) ensures that the speed setpoint is reduced proportionally as the load torque increases.

Drive Functions	127
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4