Magnum 6K8-Series Industrial Field Switch Installation and User Guide (04/07)
Ethernet cabling, there is no need to power down the unit. Individual cable 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 6K8-Series 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 B & C of this manual for more details. Use an RFQ for other
variations.
3.5 Alarm Contacts for monitoring internal power, and Software Traps
The Alarm Contacts feature, standard on Magnum 6K8-Series’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 6K8-’s 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 6K8- units with the
Alarm Contacts option, as these two features occupy the same
space in the case.
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Relay Contacts
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 6K8-. 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 6K8- 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
4. By default it is NC (normally closed)
5. The software operation needs to be enabled and set to get the Alarm traps. For detail
information about the Software Alarm and software control of SNMP alarm traps, please
reference the Magnum MNS-6K Software User Manual. (Chapter 19th).
The Alarm Contact is on the front left area (next to the DC power source) of
the Magnum 6K8-Series unit and is green in color as shown in the picture.
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(39 pages)
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