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Magnum 6K16-Series Managed Fiber Switch Installation and User Guide (04/06)
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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 6K16-SERIES, -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 6K16-
Series Switch. The DC terminal block on the Magnum 6K16-Series 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
hooked up at the last.
When power is applied, the green PWR LED will illuminate.
Note: The GND should be hooked up first. The 6K16-Series 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 6K16-Series Switch.
B4.1 UL Requirements for DC-powered units
1. Minimum 18AWG cable for connection to a Centralized DC power source.
2. Minimum 14AWG cable for connection to a earthing wiring.
3. Use only with Listed 10 A circuit breaker provided in building installation.
4. “Complies with FDA radiation performance standards, 21 CFR subchapter J.”
or equivalent.
5. Fastening torque of the lugs on the terminal block: 9 inch-pound max.
6. Centralized DC Power Source cable securement, use at least four cable ties to
secure the cable to the rac,k at least 4 inches apart, with the first one located
within 6 inches of the terminal block.