● Only qualified personnel or personnel supervised by responsible, skilled specialists are 
allowed to carry out basic planning and all work on the device.
● During shipping, specific transport conditions are adhered to.
● Assembly is performed according to assembly instructions. Separate cabinet units are 
connected properly (cables and busbars).
● All instructions for EMC-compatible installation, cabling, shielding, grounding, and for 
adequate auxiliary power supply are to be observed.
● Commissioning is only to be performed by qualified personnel trained for that purpose in 
accordance with the commissioning instructions.
● System configuration is carried out by an experienced system integrator. Additional system 
components - such as circuit-breaker, transformer, cables and motor - are coordinated and 
harmonized with one another for drive operation.
● The device is only operated in conjunction with the engineered components.
● Different operating modes, overloads, load cycles, and differing environmental conditions 
are permitted only after special arrangement with the manufacturer. 
Make use of the support and services offered by the relevant service center for planning, 
installation, commissioning, and servicing work. You can find the relevant contact person under 
"Service & Support (Page 119)".
2.7.2 Grounding concept
Draw-up a grounding concept and integrate the device into this concept. The grounding 
concept must take into consideration national provisions and system specifics. Ensure that the 
following criteria are fulfilled:
● At the installation site, the various subunits must be screwed together to establish a good 
electrical connection between them.
● If shield busbars are provided, these must be connected together.
● The protective grounding conductor must be connected to the system the grounding point. 
Select the highest cross-section of the protective grounding conductor from one of the 
following variants:
– According to local wiring regulations
– Calculated according to IEC 60364-5-54, 543.1
– Half a phase conductor cross-section
Safety instructions
2.7 Information for persons responsible for plants and systems
SINAMICS SH150  6SL3805
Operating Instructions 05/2020 19