Synchronization - Siemens SINAMICS S120 Function Manual

Vector control

4.17 Synchronization

Note
With induction motors, the demagnetization time must elapse before the flying restart
function is activated to allow the voltage at the motor terminals to decrease otherwise high
equalizing currents can occur when the pulses are enabled due to a phase short-circuit.
Overview of key parameters (see SINAMICS S List Manual)
● p1082 Maximum speed
● p1200 Flying restart operating mode
– 6: Flying restart is active after: fault, OFF2, start in setpoint direction only.
● p1202 Flying restart search current
● p1203 Flying restart search rate factor
● r1204 CO/BO: Flying restart, V/f control status
● r1205 CO/BO: Flying restart, vector control status
4.17 Synchronization
Features
● For the vector mode
● For induction motors without encoder
● Line supply sensing using the Voltage Sensing Module (VSM10) connected to the infeed
● Connector inputs for the actual voltage sensing of the motor via VSM10 (p3661, r3662)
● Setting a phase difference (p3809)
● Can be activated by parameter (p3802)
Description
With the synchronization function, synchronization to the infeed line is possible, in order to
switch-over (bypass) directly to the line. An additional application is to temporarily operate
156
– 0: Flying restart inactive
– 1: Flying restart is always active (start in the setpoint direction).
– 2: Flying restart is active after: power-on, fault, OFF2 (start in the setpoint direction).
– 3: Flying restart is active after: fault, OFF2. (start in the setpoint direction).
– 4: Flying restart is always active Start in setpoint direction only.
– 5: Flying restart is active after: power-on, fault, OFF2 Start in setpoint direction only.
or vector (p3801)
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Drive Functions