Siemens SIMOTICS XP 1MB1 series - Grounding Connection Type

Electrical connection
6.4 Connecting the grounding conductor
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
78 Operating Instructions, 06/2018, A5E44455710A
6.4.2
Grounding connection type
Enclosure grounding method
Conductor cross-
section
mm²
Connection of an individual conductor under the
external grounding bracket.
… 10
Connection is made using a DIN cable lug under
the external grounding bracket. DIN 46 234
… 25
Internal ground terminal
When making connections, ensure the following:
● Ensure that the connecting surface is bare and is protected against corrosion using a
suitable substance, e.g. acid-free Vaseline.
● Arrange the flat washer and spring washer under the bolt head.
● Locate the cable lug under the clamping bracket.
● Use the terminals designated for the grounding conductor in the terminal box.
● Observe the tightening torque (Page 166) for the locking screw.
External ground terminal
When making connections, ensure the following:
● Ensure that the connecting surface is bare and is protected against corrosion using a
suitable substance, e.g. acid-free Vaseline.
● Position the cable lug between the contact bracket and the grounding bracket; do not
remove the contact bracket pressed into the enclosure!
● Arrange the flat washer and spring washer under the bolt head.
● Use the marked connection location for the grounding conductor on the stator housing.
● Observe the tightening torque (Page 166) for the locking screw.