Synchronization - Siemens SINAMICS S120 Function Manual

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Synchronization

● Drive in the vector control mode with Voltage Sensing Module (VSM10)

● Induction motor without encoder

● Vector control

● 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)

With the "synchronization" function, a Motor Module can be synchronized with an existing

line supply, for example to regenerate into the line supply. Another application after

synchronization, is to switchover to temporarily operate the motor directly on the line supply

(bypass), to carry out maintenance work on the drive converter without a plant shutdown.

Synchronizing is activated using parameter p3800 and either internal or external actual

voltage sensing is selected. With internal actual voltage sensing (p3800 = 1), the voltage

setpoints of the electrical motor model are used for the synchronization. For external actual

voltage sensing (p3800 = 0), the voltage is sensed using a VSM, which is connected to the

line phases. The voltage values must be transferred to the synchronization via connectors

r3661 and r3662.

Function diagrams (see SINAMICS S120/S150 List Manual)

Drive functions

Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3

Technology functions - Synchronizing

Vector control

4.21 Synchronization