Efficient Networks S120 manual Vector control Synchronization

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

–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.

–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

4.17Synchronization

Features

●For the vector mode

●For induction motors without encoder

●Line supply sensing using the Voltage Sensing Module (VSM10) connected to the infeed or vector (p3801)

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