Siemens SINAMICS S120 Function Manual page 355

3. "V/f control" should be selected as controller structure.
4. Under "Control mode", select "(15) Operation with braking resistor".
5. Select the supply voltage in the configuration dialog box.
6. In the configuration dialog box, select "Chassis" as format.
7. Select the required power unit in the configuration dialog box.
8. Close the Configuration window for the Motor Module and the resistors.
9. Follow the wizard from "Continue >" up to "Complete".
The Motor Module is displayed with the component number in the topology.
Activating a parallel connection
Motor Modules can be operated Braking Modules a in parallel connection. The setting is
made in STARTER as follows during the configuration:
1. Activate the "Parallel connection" checkbox in the "Power Unit Additional Data"
configuration dialog box (see step 7 of the above list).
The pull-down menu for the "Number of parallel modules" appears.
2. Select the desired number of Motor Modules.
3. Click "Continue" until you reach "Complete".
You have now completed the wizard for the configuration of the Motor Modules.
4. Check the number of Motor Modules that you have set in the topology.
The braking resistors must be dimensioned for each Motor Module according to the table
of resistances above.
Figure 7-6
5. To carry out further checks, double-click ".../Drives/Drive_1 > Configuration" in the project
navigator.
A dialog opens allowing you to check the current configuration. The "Current power unit
operating values" button lists the Motor Modules according to component number. During
operation, they show the current electrical values.
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Parallel connection of Motor Modules as Braking Modules
7.13 Motor Module as a Braking Module
Basic functions
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