Synchronization - Siemens SINAMICS S120 Function Manual

Vector control

5.18 Synchronization

5.18 Synchronization
Requirement
● Drive in the vector control mode with Voltage Sensing Module (VSM10)
● Induction motor without encoder
● Vector control
Features
● 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, 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)
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Technology functions - Synchronizing
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions