Bypass With Synchronization With Overlap (P1260 = 1) - Siemens SINAMICS S120 Function Manual

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Commissioning the bypass function

The bypass function is part of the function module "technology controller" that can be

activated when using the commissioning Wizard. Parameter r0108.16 indicates whether it

has been activated.

Bypass with synchronization with overlap (p1260 = 1)

When "bypass with synchronization with overlap (p1260 = 1)" is activated, then motor is

transferred, synchronized to the line supply and is also retrieved again. During the

changeover, the two contactors K1 and K2 are simultaneously closed for a time (phase lock

synchronization).

A reactor is used to de-couple the drive converter from the line supply - the uk value for the

reactor is 10% +/- 2%.

The bypass function with synchronization with overlap (p1260 = 1) can only be activated

using a control signal. It cannot be activated using a speed threshold or a fault.

Drive functions

Function Manual, (FH1), 10/2008, 6SL3097-2AB00-0BP5

Circuit example: Bypass with synchronization with overlap

Vector control