Siemens Sinamics S120 Function Manual page 151

● Perform commissioning with motor identification at standstill.
● Enter the parameters for saturation characteristic and load characteristic.
● Activate closed-loop controlled operation down to zero speed via parameter p1750.5 = 1.
The following advantages are obtained by maintaining closed-loop controlled operation:
● No torque irregularities as a result of changeover operations in the closed-loop control
● Closed-loop speed and torque control without encoder (sensorless) up to and including 0
● Higher dynamic performance when compared to open-loop controlled operation
● Encoderless operation of drive line-ups (e.g., in the paper industry, master-slave
● Active (including hanging/suspended) loads down to a frequency equal to zero.
Function diagrams (see SINAMICS S120/S150 List Manual)
● 6030 Vector control - speed setpoint, droop
● 6730 Interface to Motor Module (ASM, p0300 = 1)
● 6731 Interface to the Motor Module (PEM, p0300 = 2)
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p0305[0...n] Rated motor current
● r0331[0...n] Actual motor magnetizing current/short-circuit current
● p0500 technology application
● p1610[0...n] Torque setpoint static (SLVC)
● p1611[0...n] Supplementary accelerating torque (SLVC)
● p1750[0...n] Motor model configuration
● p1755[0...n] Motor model changeover speed encoderless operation
● p1756 Motor model changeover speed hysteresis encoderless operation
● p1758[0...n] Motor model changeover delay time, closed/open-loop control
● p1802[0...n] modulator mode
● p1803[0...n] modulation depth maximum
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
structure
Hz.
operation) is possible.
NOTICE
Output filter
The technique cannot be used with the existing output filter.
4.1 Sensorless vector control (SLVC)
Vector control
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