Specifications

Industrial Networking Solutions
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Industrial Ethernet Switches >
Introduction to Unmanaged Ethernet Switches
Industrial environments often involve unknown, hazardous factors
that can influence the operation of Ethernet devices. In fact, some
of the factors could cause serious disasters or the loss of life and
property. Many of Moxa’s industrial products have received UL508
and UL60950-1 certifications, which were developed to indicate which
industrial control and information technology equipment is suitable
Certifi ed to Meet Industrial Reliability Standards
Power-over-Ethernet Solutions
Advanced Features for Enhanced Reliability and Operation
Redundant Power Inputs
The IKS-6324, EDS-200A, EDS-305, EDS-308, EDS-309, EDS-316,
EDS-G205, EDS-G308, and EDS-P308 unmanaged Ethernet switches
provide two power inputs that can be connected simultaneously to
live DC power sources. If one of the power inputs fails, the other live
source acts as a backup to provide the Ethernet switch’s power needs
automatically.
Ethernet
Power
Power over Ethernet
Back-up Power Supply
PWR2
PWR1
DIN-Rail
+24/48 VDC Power Supply
Relay Output Alarm for Port Breaks, Power Failure
The EDS-305, EDS-308, EDS-309, EDS-316, EDS-G205, EDS-G308,
and EDS-P308 unmanaged Ethernet switches provide relay contact
outputs to warn technicians on the shop floor when the power fails or
a port link breaks, so that they can respond quickly with appropriate
emergency operation procedures.
Warning Notification
EDS-P308
PoE Ethernet Switch
SPL-24
PoE Splitter
Non-PoE
Device
24 VDC
output
Data on
Ethernet
48 VDC
Power Supply
Wireless Access Point
Moxa provides solutions for any IEEE 802.3af PoE compliant unit and
Ethernet-enabled device. The EDS-P308 series of unmanaged Ethernet
switches and the SPL-24 PoE splitter can be used to simplify wiring
in the field and provide a more versatile environment for installing
devices. The devices can be placed up to 328 feet (100 m) from a PSE.
for hazardous locations such as maritime environments, mines, oil
refineries, and other industrial settings. In addition, UL/cUL Class I
Division 2, ATEX C1Z2, and DNV and GL maritime type approvals have
strict standards for testing and determining which devices can be used
safely and reliably in these critical environments.
Broadcast Storm Protection
Moxa’s unmanaged Ethernet switches are protected from receiving too
many broadcast packets. During normal use, broadcast packets will
be forwarded to all ports except the source port. However, unmanaged
Ethernet switches will discard broadcast or multicast packets if the
number of those packets exceeds a threshold in a preset period of
time. When the preset time period expires, the switch will then resume
receiving broadcast or multicast packets until the threshold is reached
again.