Siemens SIPART PS2 Compact Operating Instructions page 18

Connection diagram for article numbers 6DR52..-0E/D/F/G/K...
①
Non-hazardous area
②
Explosive atmosphere
③
Basic electronics
Figure 4-7 Device version 2-/3-/4-wire, with connection type 2-wire
20
④
Binary input 1
⑤
HART communicator
⑥
Signal source
SIPART PS2 (6DR5...)
A5E03436620-06, 04/2015