GarrettCom MAGNUM 6KM manual B3.0 6KM DC Single Source Installation

Magnum 6KM Mobile Ethernet Switch Installation and User Guide 07/10

B2.0 12, 24, –48, 110, 125 and 250VDC POWER, THEORY OF OPERATION The 12, 24, -

48VDC, 110, 125 and 250VDC power options are designed using diodes inside

on each DC power input line behind the two external

power connection terminals, so that the power from an

external source can only

flow into the hub. This allows the Switch to operate only whenever DC power is correctly 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.

B3.0 6KM DC SINGLE SOURCE INSTALLATION

This section describes the proper connection of the 12, 24, –48, 110, 125 and 250VDC to the DC power connector on the Magnum 6KM Switch. The DC input connector on the Magnum 6KM Mobile Switch is located on the left front of the unit. The power terminals are connected as shown below, and they are electrically floating inside the unit so that either may be grounded by the user if desired. The chassis is “earth” or ground (GND).

The mating connection to the 6KM switch is made utilizing a RD24, locking, female connector. Simply align the keyed female connector to the 6KM male connector and twist the threaded lock to secure.

Standard 6KM male DC Power Input connector:

Pin 1= A+

Pin 2= NC (Not connected)

Pin 3= NC (Not connected)

Pin 4= A-

Note: for Dual-Source power input pins specification, see Section C5.0

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