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ST-Port to ST-Port Cable Wiring
This is a Class 1 Laser/LED product. To avoid causing serious
damage to your eyes, do not stare directly into the las e r beam .
Redundant Power Inputs
Both power inputs can be connected simultaneously to live DC power
sources. If one power source fails, the other live source acts as a
backup, and automatically supplies the EDS-405A/408A with p o w e r.
Relay Contact
The Moxa EtherDevice switch has one relay contact located on the top
panel. For detailed instructions on how to connect the relay contact
power wires to the two middle contacts of the 6-contact terminal block
connector, see the Wiring the Relay Contact section. A typical
scenario would be to connect the fault circuit to a warning light located
in the control room. The light can be set up to switch on when a fault is
detected.
The relay contact has two terminals that form a fault circuit for
connecting to an alarm system. The two wires attached to the fault
contacts form an open circuit when (1) a relay warning event is
triggered, (2) the EDS-405A/408A is the Master of this Turbo Ring, and
the Turbo Ring is broken, or (3) there is a start-up failure. If none of
these three conditions occur, the fault circuit will be closed.
Turbo Ring DIP Switch Settings
EDS-405A/408A series switches are plug-and-play managed redundant
Ethernet switches. The proprietary Turbo Ring protocol was developed
by Moxa to provide better network reliability and faster recovery time.
Moxa Turbo Ring’s recovery time is less than 300 ms (Turbo Ring) or
20 ms (Turbo Ring V2) —compared to a 3 to 5-minute recovery time
for commercial switches—decreasing the possible loss caused by
network failures in an industrial setting.
There are 4 Hardware DIP Switches for Turbo Ring on the top panel of
the EDS-405A/408A that can be used to set up the Turbo Ring easily
within seconds. If you do not want to use a hardware DIP switch to set
up Turbo Ring, you can use a web browser, Telnet, or console to disable
this function.
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