Siemens SINAMICS S150 - Bypass with Synchronizer with Degree of Overlapping (P1260 = 1)

Functions, monitoring, and protective functions
9.4 Extended functions
Drive converter cabinet units
342 Operating Instructions, 07/07, A5E00288214A
9.4.2.1 Bypass with synchronizer with degree of overlapping (p1260 = 1)
Description
When “Bypass with synchronizer with degree of overlapping (p1260 = 1)” is activated, the
synchronized motor is transferred to the supply and retrieved again. During the changeover,
both contactors K1 and K2 are closed at the same time for a period (phase lock
synchronization).
A restrictor is used to disconnect the converter and supply voltage. The uk value for the
restrictor is 10% ± 2%.
M
~
K 1 K 2
5HDFWRU
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9ROWDJH6HQVLQJ
0RGXOH960
3URWHFWLYHGHYLFH
Figure 9-9 Typical circuit diagram for bypass with synchronizer with degree of overlapping
Activation
The function with synchronizer with degree of overlapping (p1260 = 1) function can only be
activated using a control signal. It cannot be activated using a speed threshold or a fault.