Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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7.4
SEL-700G Relay Instruction Manual Date Code 20170814
Communications
Communications Interfaces
Figure 7.2 Ethernet Network Configuration With Dual Redundant
Connections (Failover Mode)
Figure 7.3 Ethernet Network Configuration With Ring Structure (Switched
Mode)
Dual Network Port Operation
The SEL-700G dual Ethernet port option has two network ports. Network port
failover mode enables the dual Ethernet port to operate as a single network
adapter with a primary and standby physical interface. You can connect the
two network ports to the same network or to different networks, depending on
your specific Ethernet network architecture.
Failover Mode
In the failover mode operation, the relay determines the active port. To use
failover mode, proceed with the following steps.
Step 1. Set NETMODE to FAILOVER.
Step 2. Set FTIME to the desired network port failover time
(0.10–65.00 s or OFF).
Step 3. Set NETPORT to the network interface you want.
On startup, the relay communicates via NETPORT (primary port) selected. If
the SEL-700G detects a link failure on the primary port, it activates the
standby port after the failover time, FTIME, elapses. If the link status on the
NETWORK
Set Port 1 (Ethernet) settings in each relay.
CAT 5 shielded twisted pair (STP) cables with RJ45
connectors (SEL-C627/C628) for copper Ethernet ports
OR
Fiber-optic Ethernet cables with LC connectors
(SEL-C808) for fiber-optic Ethernet ports
Set Port 1 (Ethernet) settings in each relay.
NETWORK
CAT 5 shielded twisted pair (STP) cables with
RJ45 connectors (SEL-C627/C628) for
copper Ethernet ports
OR
Fiber-optic Ethernet cables with
LC connectors (SEL-C808) for
fiber-optic Ethernet ports
NOTE:
If you change settings for the
host port in the relay and the standby
network port is active, the relay
resets and returns to operation on
the primary port.