1MB..5/6 shaft height 71 ... 355 
Operating Instructions, 07/2020, A5E41926185A 
3 
Table of contents 
1  Introduction ........................................................................................................................................... 9 
1.1  About these instructions ...................................................................................................... 9 
1.2  Compiling personal documents ............................................................................................ 9 
2  Safety information ............................................................................................................................... 11 
2.1  Information for those responsible for the plant or system ................................................... 11 
2.2  The 5 safety rules ............................................................................................................... 11 
2.3  Qualified personnel............................................................................................................ 12 
2.4  Safe handling .................................................................................................................... 12 
2.5  Electromagnetic fields when operating electrical power engineering installations ............... 14 
2.6  Use in hazardous areas....................................................................................................... 14 
2.7  Electrostatic sensitive devices............................................................................................. 15 
2.8  Electromagnetic compatibility ............................................................................................ 16 
2.9  Interference immunity ....................................................................................................... 16 
2.10  Influence on the line power supply through a strongly irregular torque ............................... 17 
2.11  Interference voltages when operating the converter ........................................................... 17 
2.12  Special designs and construction versions .......................................................................... 17 
2.13  Special conditions for use................................................................................................... 17 
3  Description ........................................................................................................................................... 19 
3.1  Area of application ............................................................................................................. 19 
3.2  Rating plates ...................................................................................................................... 21 
3.3  Design ............................................................................................................................... 23 
3.3.1  Regulations........................................................................................................................ 23 
3.3.2  Cooling and ventilation ...................................................................................................... 24 
3.3.2.1  Machines with a fan ........................................................................................................... 24 
3.3.3  Bearings ............................................................................................................................ 25 
3.3.4  Axial and radial forces ........................................................................................................ 25 
3.3.5  Balancing........................................................................................................................... 26 
3.3.6  Types of construction/method of installation ...................................................................... 26 
3.3.7  Degree of protection .......................................................................................................... 28 
3.3.8  Environmental conditions .................................................................................................. 28 
3.3.9  Optional built-on and built-in accessories ........................................................................... 29 
3.3.10  Marking ............................................................................................................................. 30 
3.3.11  Terminal box...................................................................................................................... 31 
3.3.12  Paint finish ........................................................................................................................ 31