Emerson PACSystems RSTi-EP - Arrangement of Safe Power-Feed Modules; Power Supply Concept

User Manual Section 3
GFK-2958L May 2021
Configuration 24
Figure 10: Installation Position of the RSTI-EP Station on the DIN Rail (Vertical
Installation)
A RSTi-EP station may only be installed in this sequence (starting from the left/bottom):
•
End bracket
•
Network adapter
•
Up to 82 modules (including max. 64 active modules)
•
End plate and end bracket
A maximum of three passive modules (potential
distribution module, power-feed module or blank
module) may be placed in successive positions. Then at
least one active module must follow.
Attention
3.1.1 Arrangement of Safe Power-Feed Modules
A safe power-feed module EP-19xx module can be positioned anywhere in the RSTi-EP
station. All the following output modules (except for the EP-2814 and EP-2714 relay
modules) up to the next EP-19xx module are safely disconnected (safety segment). Multiple
EP-19xx modules/safety segments can be arranged within a station.
Note: When using RSTi-EP EP-19xx modules, also refer to the Modules for Functional Safety Manual
(GFK-2956).
3.1.2 Power Supply Concept
The RSTi-EP system uses three internal current paths as described in the following chapter,
Detailed Descriptions of the Fieldbus Network Adapters. Input and output paths are