GarrettCom 6K25 manual C4.0 Features and Benefits of the DUAL-SOURCE Design

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GND
B-
B+
A-
A+
CHASSIS
GND
+
- FUSE
HUB
SUPPLY

Magnum 6K25 Managed Fiber Switch

Installation and User Guide (04/06)

The functionality of the Magnum 6K25 Switch -48VDC, 24VDC and 125VDC Dual-Source Option units is identical to the standard AC-powered models. Refer to the main sections of this Installation and User Guide for a detailed description of the Magnum 6K25 Switches.

C3.0 DUAL-SOURCE OPTION, THEORY OF OPERATION The Dual-Source DC power

option is designed using diodes inside of the chassis on each DC power input line. A diode is placed in each of the four input lines (behind the four

external power connection terminals) so that power from an external source

can only flow into the unit. This allows the unit to operate whenever DC power is correctly applied to either or both of the two inputs

C4.0 FEATURES AND BENEFITS OF THE DUAL-SOURCE DESIGN

a)The Switch unit can receive power from either input, “A” or “B”. The hub will normally draw its power from the DC source with the highest voltage at a given time.

b)The Switch unit will not allow power to flow from a higher voltage input to a lower voltage input, i.e. the two DC power sources are not mixed together by the hub.

c)When one correct DC input is present, the Switch will receive power if the other DC input is absent, or even if it is connected with reverse polarity or shorted or grounded.

d)Reverse polarity connections, if they should accidentally occur on either input, will not damage the Switch or power supply internally (nor will it blow the fuse in the internal power supply) because of the blocking action of the diodes. This is true even if one input connection is reversed while the Switch is operating from the other source.

e)The Switch will not receive power (and will not work) when both inputs are simultaneously absent or are both incorrectly connected.

C5.0 INSTALLATION

This section describes the proper connection of the -48VDC, 24VDC and 125VDC dual source leads to the -48VDC, 24VDC 7 125VDC power terminal block on the Magnum 6Ks Switch (shown in Figure )

The -48VDC terminal block on the Magnum 6K25 Switch, as shown in Fig C5.0 is located on the right rear of the unit and

is equipped with five (5) screw-down

A+ A-

B- B+

 

lead posts. If it is the reverse model it

 

 

 

is located on the left rear. The primary

 

 

 

terminals are identified as positive

 

 

 

(A+), negative (A-), and the secondary

 

36-70VDC

 

power terminals as negative (B-),

36-70VDC

GND

 

 

 

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 6K25 unit has a floating ground, so the

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Contents Managed Fiber Switch Trademarks Contacting GarrettCom, Inc Canadian EmissionSpecifications Troubleshooting Revisions Magnum Line Network Standards and Compliance, hardware Technical SpecificationsPerformance Maximum 10 Mbps Ethernet Segment LengthsManagement Console connector Fiber Multi-mode connector types supportedFiber Single-mode connector types Power Supply InternalPer-port MDI or Mdix on RJ-45 Alarm Contact OptionalNebs Testing and Certification Nebs certified Agency ApprovalsOrdering Information For Gigabit module configuration options 6K PoE Modules with 48VDC Pass-Through6K PoE Modules with 48VDC Power Inside Introduction Inspecting the Package and Product Product Description Magnum 6K25 Managed Fiber Switch 1a Regular 6K25 front view, configured for 24 +1 Gb ports Magnum 6K25 and 6K25R chassisEight-port SFF fiber modules 6K8-MTRJ, 6K8-MLC, 100Mb fiber Eight-Port Copper Module, 6K8-RJ45 The 6K25-Series’s8-port New PoEPower Inside, model PI6KP8-45RJ MDIX, 10/100Mb 8-port ACT LK RX Four-Port 10 Mb mm Fiber ST Modules Gigabit 1000Mbps port modulesPacket Prioritization, 802.1p QOS Frame Buffering and Flow Control@ 1000Mb Fiber SC + 4@10/ 100Mb Managed Network Software MNS-6K for Magnum 6K25-Series GarrettCom proprietary MIBs for Snmp„ Managed switching for high performance Ethernet LANs „ Features Fiber-Built-In„ Nebs and Etsi tested and certified „ RJ-45 ports are MDI/MDIX supportedExample 1 Magnum 6K25 Switch for a Vlan application ApplicationsWww . GarrettCom . com Installation Locating Magnum 6K25 SwitchesIeee Standard Media Type Max. Distance Port Module Fiber Connecting Ethernet MediaConnecting Fiber Optic ST-type, twist-lock CopperConnecting Fiber Optic SC-type, Snap-In Connecting Single-Mode Fiber OpticMedia Ieee Standard Table-Top or Shelf Mounting Rack-mounting for 19 Retma racks, regular Magnum 6K25s 1 Mountings for Magnum 6K25 units rack-mounted in a framePowering the Magnum Managed Fiber Switch Rack-mounting, Reverse version of the Magnum 6K25s2 Reverse Magnum 6K25 units, rack-mounted in a frame 6K25 Port Module 6KPM Installation Preparation for Installing and Removing 6KPMs Remove Chassis CoverInstalling 6KPM Cards in the Magnum 6K25 1c Top View 6KPM retaining screws hold Face PlateUplink 2f Securely latching up 6KPM Cards into a Magnum 6K25 2g Top View 6KPM Module installed inside a 6K25 Removing 6KPM Cards 3b Removing a 6KPM CardDB-9 Console port connector Connecting the Console Terminal to Magnum 6K25 ManagementPin Signal Description Console DB-9 PortSwitching Functionality Filtering and ForwardingStatus LEDs Up-link MDI-MDIX on RJ-45 port modules, for port 1 onlyAuto-CrossMDIX and Auto-negotiation, for RJ-45 ports Www . GarrettCom . com Flow-control, Ieee 802.3x standard 6KP4 ’cvrIntroduction Magnum 6K25 Managed Fiber Switch Port Modules ZXSC706KPM Module Description 6KP4-F10ST, 4@10Mb multi-mode FX-ST twist lock Module 1c 6KP4 @10Mb @100Mb Multi-mode FX-ST twistLock Module Copper ports and 2 Single Mode SC-type connectors. It Provides an advantageFiber functions in one Module of the 6K25 Switch Through combining copperPort@ 100Mbps Multi-Mode Fiber port Distances up the IEEE-standard100Mbps distance limits, i.e Copper and fiber Small Form Factor Magnum 6KP8-45MTModule is a combo module with Placing more ports on one module100Mbps multi-mode LC Connector Small6KP8-MLC, 8 ports @ Form Factor9 6KP8-RJ45 Twisted Pair, 10/100Mb 8-Port PoE LEDs Summary Fig. the top 8-RJ45 GBIC-SXSC Gigabit fiber1000Mb, multi-mode SC Connector 14 6KM-BLNK When Calling for Assistance Before Calling for AssistanceReturn Material Authorization RMA Procedure No Problem FoundShipping and Packaging Information Appendix a Warranty Information Appendix B Internal DC Power Supply OptionsB3.0 Applications for DC Powered Switches B4.1 UL Requirements for DC-powered units B4.0Appendix C Internal DC Dual-Source Power Option B5.0 OperationC4.0 Features and Benefits of the DUAL-SOURCE Design C5.1 UL Requirements Example Magnum 6K25R-48VDCExample Magnum 6K25R-24VDC or Magnum 6K25R-125VDC
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