Siemens SINAMICS S120 System Manual page 9

12 Cabinet design and EMC .................................................................................................................... 171
12.1 General information......................................................................................................... 171
12.2 Safety instructions for control panel manufacturing.......................................................... 171
12.3 24 V DC supply voltage .................................................................................................... 172
12.3.1 General ........................................................................................................................... 172
12.3.2 24 V power supply and connection of components........................................................... 173
12.3.3 Typical 24 V current consumption of the components....................................................... 174
12.3.4 Selecting power supply units............................................................................................ 175
12.4 Connection system .......................................................................................................... 176
12.4.1 Connectable conductor cross-sections for line supply and power cables of the booksize
components .................................................................................................................... 176
12.4.2 Spring-loaded terminals ................................................................................................... 177
12.4.3 Screw terminals ............................................................................................................... 177
12.4.4 Cable lugs........................................................................................................................ 178
12.5 Protective connections and equipotential bonding............................................................ 178
12.6 Arrangement of the devices ............................................................................................. 181
12.7 Cooling circuit and coolant properties .............................................................................. 181
13 Service and maintenance .................................................................................................................. 183
13.1 Spare parts ...................................................................................................................... 183
13.2 Replacing the fan ............................................................................................................. 183
13.2.1 Safety instructions for replacing a fan............................................................................... 183
13.2.2 Replacing the fan at the HF Choke Module ....................................................................... 183
13.2.3 Replacing the fan at the HF Damping Module ................................................................... 185
13.3 Recycling and disposal ..................................................................................................... 186
A Appendix............................................................................................................................................ 187
A.1 List of abbreviations......................................................................................................... 187
A.2 Documentation overview ................................................................................................. 199
Index .................................................................................................................................................. 201
High Frequency Drive
System Manual, 10/2020, 6SL3097-5AH10-0BP0
Table of contents
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