
Reference: A938
Index: B
Page 113
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Instruction Manual – NPS914 Alarm and Indication IED
9.9. Double RJ-45 10/100 Mbps Ethernet communication module
(optional)
Figure. 9.9. - 14. Double RJ-45 10/100 Mbps Ethernet communication module.
Connector
Description
Two-pin connector
• IRIG-B input
RJ-45 connectors
• Two Ethernet ports
• RJ-45 connectors
• 10BASE-T and 100BASE-TX
This option card supports redundant ring configuration and multidrop configurations. Redundant
communication can be implemented by Ethernet switches that support Rapid Spanning Tree Protocol
(RSTP). Please note that each ring can only contain NP900 series devices, and any third party devices
must be connected to a separate ring.
For other redundancy options, please refer to the option card "LC 100 Mbps Ethernet communication
module".
The images below present two example configurations: the first displays a ring configuration (note how the
third-party devices are connected in a separate ring), while the second displays a multidrop configuration.