Efficient Networks Siemens Sinamics S120 - Manual (Page 161)

Vector control
4.20 Bypass
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
161
A reactor is used to de-couple the drive converter from the line supply - the uk value for the
reactor is 10% +/- 2%.
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Figure 4-25 Circuit example: Bypass with synchronization with overlap
Activating
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.
Example
The following parameters must be set after the bypass function with synchronization with
overlap (p1260 = 1) has been activated.
Table 4-8 Parameter setting for bypass function with synchronization with overlap
Parameter Description
p1266 = Control signal setting when p1267.0 = 1
p1267.0 = 1
p1267.1 = 0
Bypass function is initiated by the control signal
P1269[0] = Signal source to provide the feedback signal of contactor K1
P1269[1] = Signal source for contactor K2 feedback
p3800 = 1 For synchronization, the internal voltages are used.
p3802 = r1261.2 Synchronizer activation is triggered by the bypass function.