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6.3
Ethernet Network Redundancy IEC 61850
The EN100 module is used on Reyrolle devices to provide Ethernet/IEC61850 functionality. The EN100 supports
RSTP, PRP & HSR redundancy protocols.
All 7SR157 IEC61850 variants are delivered with the EN100+ (Plus) module and firmware 4.27 or later. The
earlier EN100 (standard) modules are not used in the 7SR157.
The EN100 module firmware can be updated by connecting to the relay via the rear Ethernet port. For more
information on connecting to the relay via the Ethernet port, please see the Reydisp Manager Userguide.
Depending on the EN100 module type and Firmware version, the following protocol options are available:
Interface Type
Electrical RJ45 EN100+
Electrical RJ45 EN100+
Optical EN100+
Optical EN100+
6.3.1 RSTP – Rapid Spanning Tree Protocol
RSTP is a redundancy protocol with a minimal response time that has been standardized in IEEE-802.1D (2004).
The reconfiguration time depend on the topology and start at 50ms.
RSTP need to be enabled on the device within Reydisp Manager (See Reydisp Manager userguide). Network
rings with up to 30 devices is possible.
© 2018 Siemens Protection Devices Limited
EN100
Firmware
4.08 or earlier
4.21and later
4.08 or earlier
4.21and later
Table 1: EN100 Redundancy availability
Figure: 6.3-1 RSTP Ethernet Network Ring Configuration
Chapter 5 - 7SR157 Installation Guide
Line Mode
RSTP
OSM
Switch Mode
PRP
HSR
Chapter 5 - Page 15 of 18
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