Siemens SIMATIC ET 200SP HA System Manual page 33

Example for the configuration of an I/O station
①
②
③
④
⑤
⑥
⑨
⑮
⑯
⑰
Figure 4-2
Modules for devices in a hazardous area
System Manual, 04/2021, A5E50165138-AA
Carrier module IM
BusAdapter
Head station / interface module (IM)
BaseUnits for I/O modules
Potential group 1 (here ET 200SP)
⑦
• I/O module
Potential group 2 (here ET 200SP)
⑧
• Fail-safe I/O module
Potential distributor
Read the note "Thermal decoupling re‐
quired".
Supply voltage for IM
Supply voltage for potential group 1
Supply voltage for potential group 2
Example: I/O station with ET 200SP (basic assembly and Ex module groups)
4.2 Planning the configuration of an ET 200SP distributed I/O
⑭
Server module
⑩
Potential group 3 (Ex module group)
⑪
• Ex BaseUnit with Ex power module
⑫
• Ex BaseUnit with Ex I/O module
⑬
Potential group 4 (Ex module group)
⑪
• Ex BaseUnit with Ex power module
⑫
• Ex BaseUnit with Ex I/O module
⑱
Supply voltage 1L+ for Ex power module (potential
group 3)
⑲
Supply voltage 1L+ for Ex power module (potential
group 4)
Plant planning
33