Siemens Sinamics S120 Function Manual page 203

Topology view
The VSM is used on the encoder side for SINAMICS S120 drives. The VSM is only used at
the VECTOR drive object in sensorless operating modes. The VSM is integrated into the
topology at the position of the motor encoder.
VSM commissioning using STARTER
The VSM for the VECTOR drive object is selected in STARTER using the drive wizard. As
the VSM is not assigned to the encoder data sets (EDS), it cannot be selected on the
encoder side. The component number of the VSM from the current topology must be entered
in parameter p0151[0,1]. This parameter assigns the VSM data set to a VSM evaluation
routine. With parameter p0155[0...n] "Activate/deactivate Voltage Sensing Module", it is
possible to activate or deactivate the VSM explicitly as a topology component.
VSM parameters are independent of the SINAMICS data set model. A maximum of two
VSMs may be used for each VECTOR drive object, i.e. two VSM data sets are available.
Note
Using two VSM
If two VSMs are connected to one Motor Module, the first VSM (p0151[0]) is used to
measure the line voltage (p3801). The motor voltage is measured (p1200) with the second
VSM.
Identification via LED and firmware version
VSM identification via LED is activated in parameter p0154 on the VECTOR drive object.
When p0154 = 1, the LED READY on the relevant VSM flashes green/orange or red/orange
at a frequency of 2 Hz.
The firmware version of the VSM can be displayed using parameter p0158[0,1] on the
VECTOR drive object.
Function diagrams (see SINAMICS S120/S150 List Manual)
● 7020 Synchronization
● 9880 VSM analog inputs
● 9886 VSM temperature evaluation
● 9887 VSM sensor monitoring KTY/PTC
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p3800[0...n] Sync-line-drive activation
● p3801[0...n] Sync-line-drive, drive object number
Drive functions
Function Manual, (FH1), 01/2012, 6SL3097-4AB00-0BP2
Vector control
4.22 Voltage Sensing Module
201