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Magnum 6K16-Series Managed Fiber Switch Installation and User Guide (04/06)
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The -48VDC terminal block on the Magnum 6K16-Series Switch, as shown in Fig C5.0
is located on the left front of the unit and is equipped with
five (5) screw-down lead
posts. The primary terminals are identified as positive (A+), negative
(A-), and the secondary power terminals as negative (B-), positive(B+). The chassis
“earth” or ground (GND) is a threaded post with a #6 nut. The Dual Source terminal
block for the 24VDC and 125VDC are similar.
Figure C5.0: -48VDC Dual-Source, wiring connections to the External
Terminal Block on a Magnum -48VDC with Dual-Source option
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 “+”.
The connection procedure is straightforward. Simply connect 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.
The 24VDC & 125VDC terminal block on Magnum 6K16-Series’s is similar to
that described in the –48VDC information above.
C5.1 UL Requirements
The following must be adhered to in order to conform to UL requirements:
1. Minimum 18 AWG cable for connection to a Centralized DC power source.
2. Minimum 14 AWG cable for connection to 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 rack at least 4 inches apart with the first one located
within 6 inches of the terminal block.
C6.0 ORDERING INFORMATION
To order the optional Dual-Source
-48VDC power supply factory installed,
order “Dual-Src48V” as a separate line item following the product model.
Example: Magnum 6K16-SeriesR-48VDC
Dual-Src-48V for the regular DS model with no ON-OFF switch
or Dual-Src48V-SWITCH with the ON-OFF manual switch.
Similarly, order the “Dual –source 24VDC” or “Dual-source 125VDC” as a
separate line item following the product model.
Example: Magnum 6K16-SeriesR-24VDC or Magnum 6K16-SeriesR-
125VDC
Dual-Src24V for regular models with no ON-OFF switch
Or Dual-Src125V-Switch for models with the ON-OFF switch
C7.0 OPERATION
Operation of the Dual-Source Magnum 6Ks-48VDC, 24VDC and 125VDC
Switch models are identical to that of the standard models.