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Magnum 6K16V Managed Fiber Switch Installation and User Guide (06/04)
applied to the two inputs. It protects the Switch from incorrect DC input connections. An
incorrect polarity connection, for example, will neither affect the Switch, its internal
power supply, nor will it blow the fuse in the internal power supply.
The manual power “On-Off” Switch (optional) is used for powering the unit on
and off when it is placed into or taken out of service.
B3.0 APPLICATIONS FOR DC POWERED ETHERNET SWITCHES
Magnum 6K16-Series Switches are easily installed in a variety of applications
where -48VDC, 24, or 125VDC or 5VDC power is used as the primary power source.
The DC power configuration capability provides an Ethernet networking solution
utilizing a special power supply in switches with a proven track record.
The –48VDC solution is particularly useful in the telecommunication industry,
where it is common for facilities to operate on -48VDC power. Such companies include
regular and wireless telephone service providers, Internet Service Providers (ISPs) and
other communication companies. In addition, many high availability equipment services,
such as broadcasters, publishers, newspaper operations, brokerage firms and other
facilities often use a battery backup system to maintain operations in the event of a power
failure. It is also frequently used for computer system backup, management and
operations monitoring equipment.
The 24V and 125VDC options are particularly useful in the Industrial environment,
where it is common for facilities to operate on 24VDC or 125VDC power. The 125VDC
options are mainly used in power utilities, such as electrical substations, electrical
generating plants, etc. The 24VDC applications are mainly in the Industrial environment,
such as factory floor, HVAC equipment, military equipment, etc. The 5VDC options are
mainly used for military or Industrial factory floor applications.
B4.0 6K16V’S -48V, 24, 125 OR 5VDC INSTALLATION
This section describes the proper connection of the -48VDC leads (or
24VDC/125VDC/5VDC leads) to the DC power terminal block on the Magnum 6K16V
Switch. The DC terminal block on the Magnum 6K16V Managed Switch is located on
the left front of the unit and is equipped with three (3) screw-down lead posts. The power
terminals are identified as positive (+) and negative (-), and they are floating inside the
unit so that either may be grounded by the user if desired. The chassis is “earth” or
ground (GND).
The connection procedure is straightforward. Simply insert the DC leads to the
Switch’s power terminals, positive (+) and negative (-) screws. The use of Ground
(GND) is optional; it connects to the Switch chassis. Ensure that each lead is securely
tightened.
NOTE: Always use a voltmeter
to measure the voltage of the incoming power supply
and figure out the +ve potential lead or -ve potential lead. The more +ve potential lead
will connect to the post labeled “+ve” and the rest to the “-ve”. The GND can be
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