Siemens SIPART PS2 Operating Instructions Manual page 362

Positioner with remote control electronics
F.6 Grounding concept 19" slide-in module
See the notes marked with
362
Do not apply the cable shield at the positioner 6DR5910-....
Mount the positioner 6DR5910-... to Ground 2 as described under Installing/mounting
(Page 39).
Ground the positioner enclosure as described under Interference immunity (Page 81).
Ground each field distributor. Connect the cable shields only among each other.
Connect the cable shields on the 19" slide-in module to the field distributor.
Ground the 19" slide-in module.
Connect the cable shields to the coupler. Ground the cable shields.
to in the graphic:
Operating Instructions, 05/2019, A5E00127926-AC
SIPART PS2 with PROFIBUS PA