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| Switch description
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Wieland Electric GmbH | BA001106 (Rev. A) | 01/2017
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Switch description
The 8 port 10/100-TX with 4 Port High-Power PoE Industrial switch is a cost-effective solution, which
meets the high reliability requirements demanded by industrial applications, and also supports to op-
erate in the wide temperature range from -40°C to 75°C. The equipment supports 24 V or 48
V DC
power input and provides the PoE function with 48
V DC
output for kinds of Powered Devices to re-
ceive power as well as data over an RJ-45 cable.
Block diagram
3.1
High-Speed Transmissions
The
wienet
UMS 8-4POE-W includes a switch controller that can automatically sense transmission
speeds (10/100 Mbps). The RJ-45 interface can also be auto-detected, so MDI or MDI-X is automati-
cally selected and a crossover cable is not required. All Ethernet ports have memory buffers that sup-
port the store-and-forward mechanism. This assures that data is properly transmitted.
3.2
Power-over-Ethernet (PoE)
PoE eliminates the need to run AC power to other devices on a wired LAN. While using Power-over-
Ethernet system, installers need to run only a single Category 5 Ethernet cable that carries both power
and data to each device. This allows greater flexibility in the locating of network devices and signifi-
cantly decreasing installation costs in many cases.
3.3
Dual Power Input
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UMS 8-4POE-W redundant power input design is with power reserve protection to prevent the
switch device broken by wrong power wiring. When one of the power inputs fails, P-Fail LED will turn
on and send an alarm through a relay output for notifying user.
3.4
Flexible Mounting
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UMS 8-4POE-W is extremely compact and can be mounted on a DIN-rail or a panel, so it is
suitable for any space-constrained environment.
3.5
Advanced Protection
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UMS 8-4POE-W supports up to 3,000
V DC
surge protection for power line, and also supports
6,000 V ESD for Ethernet ports. With these 2 strong protections, it can secure equipment against un-
regulated voltage and make systems safer and more reliable. Further,
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UMS 8-4POE-W provides
current overload protection with a resettable fuse to ensure that the device component won’t be dam-
aged by overload current.
V2- V2+ 11 14
P2
P1
V1- V1+
P-Fail
