Siemens SIMATIC PCS 7 - SM 331; AI 4 X 15 Bit [Eex Ib]; 6 ES7 331-7 RD00-0 AB0

Connection examples for redundant I/Os
C.29 SM 331; AI 4 x 15 Bit [EEx ib]; 6ES7 331–7RD00–0AB0
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
419
C.29
SM 331; AI 4 x 15 Bit [EEx ib]; 6ES7 331–7RD00–0AB0
The diagram below shows the connection of a 2-wire transmitter to two SM 331; AI 4 x 15 Bit
[EEx ib]. The transmitter is connected to channel 1. Suitable Zener diode: BZX85C6v2.
Figure C-27 Example of an interconnection with SM 331, AI 4 x 15 Bit [EEx ib]