Siemens SIMOTICS T-1FW6 Operating Instructions Manual page 109

Note
Single-core power cables without protective earth
With 1FW6 built-in torque motors featuring single-core power cables without a PE cable, a
connection point is provided for the PE.
Connect a separate protective conductor cable to this connection point. Pay attention to the
specified cross section for direct connection to the power unit. For the cross-section
specifications, see the table "Data of the power cable at the stator" in Chapter "Important data
for 1FW6 cables."
1FW6 built-in torque motors
Operating Instructions, 09/2022, A5E52220812B AA
Connection
6.2 Electrical connection
107