5.6.1 Connect the DC cable
To connect the DC link, you must connect the DC cables to the respective connection busbars.
The positions of the connections are shown in the layout diagrams. Note the designations of
the cables and connections. More detailed information is available in the circuit manual.
Screw each DC BUS cable to the connection busbars with one M12 DIN EN ISO 4014 screw
each, a DIN 6796 tensioning loop and an SN 60272 tensioning ring. Note that the bolt end
protrusion must be at least two thread pitches. Observe the torque of 50 Nm.
① M12 DIN EN ISO 4014 screw, DIN 6796 tensioning loop, SN 60272 tensioning ring
Image 5-4 DC cable
5.7 Connecting the water circuits
CAUTION
Deionized water
Deionized water is harmful to eyes and skin and can damage surfaces.
Therefore, use appropriate protective clothing for all work on the drive. However, if your eyes
or skin do come into contact with deionized water, rinse the affected area thoroughly with tap
water as soon as possible. If deionized water leaks out, eliminate the source of the problem
and remove the liquid from the surfaces affected.
NOTICE
Damage caused by foreign bodies in the cooling system
Foreign bodies in the cooling system can cause blockages in individual circuits. As a result,
the water-cooled components overheat and the drive fails.
For this reason, make sure that no foreign bodies can enter the water circulation system. Only
remove the protective cover immediately prior to connecting the water circuit.
Assembly
5.7 Connecting the water circuits
SINAMICS SM120 6SL38855?B
70 Operating Instructions 12/2015