Siemens SINAMICS GM150

1. Switch on the cooling unit.
2. Open the vent valve. To do so, turn the screw of the vent valve counter-clockwise.
Figure 7-2 Open the vent valve
3. Allow the cooling unit to run until water escapes from the venting hose. Also check with
running cooling water pump, the upper discharge hoses on each heat sink for flow by
touching it. Check optically the upper discharge hoses for air bubbles. Pay special attention
to the hoses of the uppermost heat sink of each inverter phase or rectifier unit and the heat
sink furthest separated (with regard to the piping) from the cooling unit.
Figure 7-3 Example: Air pocket
4. Close the venting valve when no more air bubbles remain in the hoses. To do so, hand
tighten the screw of the vent valve.
5. Repeat the operation for every cabinet.
7.2 Description and configuration of the PROFIBUS interface
7.2.1 Hardware components required for PROFIBUS communication
Set up a PROFIBUS interface to perform the commissioning with STARTER.
Start-up
7.2 Description and configuration of the PROFIBUS interface
SINAMICS GM150 6SL3815-2LN41-4AA2
Operating Instructions 04/2017 119