Siemens SIMOCODE pro C System Manual page 214

Mounting, wiring, connecting, system interfaces, configuration guidelines
12.2 Wiring, connecting
Terminal assignment of the ground-fault module
The following table shows the assignment of the removable terminals:
Table 12- 14 Terminal assignment of the removable terminals of the ground-fault module
Terminal Assignment
Upper terminals
40 Input C1 residual current transformer
43 Input C2 residual current transformer
Lower terminals
SPE System shielding
1)
1)
Note
Connect SIMOCODE pro via terminal SPE with the maximum possible cross-section and
with as short a cable as possible to the functional ground of the control cabinet,
e.g. to the grounded mounting plate of the control cabinet.
NOTICE
Types of ground-fault module
The 3UF7 500-1AA00-0 ground-fault module requires the 3UL22 residual current
transformer.
The 3UF7 510-1AA00-0 ground-fault module requires the 3UL23 residual current
transformer.
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System Manual, 05/2019, A5E40507475002A/RS-AD/004
SIMOCODE pro