• Unused cable entries must be closed and the screw plugs must be screwed tight.
• All the sealing surfaces must be in a perfect condition.
Connecting the ground conductor
The ground conductor cross-section must be in full conformance with the installation
regulations, e.g. acc. to IEC/EN 60204-1.
For shaft height 225 and shaft height 280, also connect the grounding conductor to the
motor end shield. There is a clamping lug ① for the ground conductor at the designated
connection point. This is suitable for connecting multi-conductor cables with cable lugs or
ribbon cables with the appropriate conductor terminations.
Figure9-2 Terminal lug for grounding conductor (shaft heights 225 and 280)
When connecting up, ensure that
• the connecting surface is bare and is protected against corrosion using a suitable substance,
e.g. acid-free Vaseline
• the at and spring washers are located under the screw head
• the minimum necessary screw-in depth and the tightening torque for the clamping screw
must be maintained
Table 9-1 Screw-in depth and tightening torque
Screw Penetration depth: Tightening torque
M8 x 30 >8mm 20Nm
9.3.3 Routing cables in a damp environment
Note
Routing cables in humid/moist environments
If the motor is mounted in a humid environment, the power and signal cables must be routed
as shown in the following gure.
Electrical connection
9.3System integration
1PH8 SIMOTICS M main motors
Conguration Manual, 12/2022, A5E51895839A 227
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