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Magnum 6K25e Gigabit Fiber Switch Installation and User Guide (10/07)
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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 24VDC and 125VDC solution are particularly useful in the Industrial
environment, where it is common facilities to operate on 24VDC or 125VDC power. The
125VDC solution is 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.
B4.0 INSTALLATION
This section describes the installation of the -48 VDC, 24VDC and 125VDC
power source leads to the -48 VDC, 24VDC and 125VDC power terminal block on the
Magnum 6K25es. (see figure at right).
In this picture, the -48VDC
terminal block on the Magnum 6K25e
is located on the rear of the unit and is
equipped with three (3) screw-down
lead posts. It is similar for 24VDC and
125VDC options on Magnum 6K25e.
The leads are identified as negative (-),
positive (+), Figure B4.0: -48VDC Terminal Block on Magnum 6K25e-
48VDC and chassis ground (GND).
The actual connection procedure is very straightforward. Simply connect the
leads to the Magnum unit, beginning with ground. Ensure that each lead is securely
tightened.
Note: The GND should be hooked up first. The 6K25e unit has a floating ground, so
the user may elect to Ground either + or = terminal to suit the customer’s use.
Before connecting hot lines to the Terminal Block of –48VDC, 24VDC or
125VDC, always use a digital voltmeter to measure the output voltage of the power
supply and determine the lead which is more “+ve potential”. The more “+ve” voltage
lead from 48V or –48V supply must be connected to the post labeled “+”.
An ON-OFF manual switch is optional for DC power. This can be used to cut
off power connections and as a RESET for the Magnum 6K25e Switch.
36-70VDC
_
+
GND
ON
OFF