GarrettCom 6K25 manual Powering the Magnum Managed Fiber Switch

Magnum 6K25 Managed Fiber Switch Installation and User Guide (04/06)

3.4Powering the Magnum Managed Fiber Switch

The Magnum 6K25 Switches incorporate an internal universal power supply

and have a recessed male IEC connector for the AC power cord at the left-rear. A manual power ON-OFF switch is adjacent. A six-foot 115 VAC 60 Hz standard power cord is supplied with each unit shipped within the United States and Canada.

The auto-ranging power supply supports installation environments where the AC voltage is from 90 to 260 volts with a power input frequency between 47 and 63 Hz. The 25-port units will consume over 20 watts of power typically. When connecting the Ethernet cabling, there is no need to power down the unit. Individual segments can be connected or disconnected without concern for AC power-related problems or damage to the unit.

Power supply options are available to suit the 6K25 Switches to special high- availability communications and/or heavy industrial-grade applications, including:

*-48VDC, 24VDC and 125VDC with single DC input,

*-48VDC, 24VDC and 125VDC with dual-source DC input,

See the Appendices of this manual for more details. Use an RFQ for other variations.

3.4.1Alarm Contacts for monitoring internal power, and Software Traps

The Alarm Contacts feature, optional on Magnum 6K25’s, provides two

Form C Normally Closed (NC) contacts to which the user can attach two sets of status monitoring wires at the green terminal block. When this option is present, the terminal block for Alarm Contacts is part of the Power Input panel in the Magnum 6K25 case.

The AC or DC power input connection is in the same panel. A manual On-Off Switch for power to the unit is not available on 6K25 units with the Alarm Contacts option, as these two features occupy the same space in the case.

The first NC Alarm Contact (top position) is a “Software Alarm”, operated by user settings in the MNS-6K software. The user can disable the Software Alarm feature with a software configuration command if desired. When the Software Alarm is enabled, the Form C Normally Closed (NC) contact is held close during normal software operation. A user-defined software malfunction, such as an SNMP Trap or a Software Security violation or an S-Ring Fault, causes the contact to open and thus trigger an alarm in the user’s monitoring system

The second (bottom position) NC Alarm Contact is held close when there is power on the main board inside of the 6K25. This provides a “Hardware Alarm” because the NC contacts will open when internal power is lost, either from an external power down condition or by the failure of the power supply inside of the Magnum 6K25 Switch. Useful info. about Alarm contacts:

1.There is four terminal block (1,2,3,4)provided next to AC/DC power supply

2.The top two pins (1,2) are software operated

3.The bottom two pins (3,4) are hardware operated

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