Instruction manual

ConneXium Ethernet Switch 499NES18100 8-Port 10/100 Base-TX Quick Reference Guide
4 31005416 02 August 2004
Voltage supply
Redundant voltage supplies are supported. Both inputs are decoupled. There is no
load distribution. With redundant supplies, the power pack supplies only the switch
module with the higher output voltage. The supply voltage is electrically isolated
from the housing.
Indicator contact
The indicator contact is used to supervise the functions of the ConneXium
499NES18100 switch, facilitating remote diagnosis without management software.
A contact interrupt uses a potential-free indicator contact (a closed circuit relay
contact) that indicates:
the failure of at least one of the two supply voltages
a permanent fault in the switch (internal 3.3 VDC voltage, supply voltage 1 or 2
less than 9.6 V)
faulty link status on at least one port. The indication of the link state on the
499NES18100 switch can be masked on a port-by-port basis using DIP switches
LA1 ... LA8
The switch module is shipped with no link test.
POWER SUPPLY GUIDELINES
The device is designed for safety extra-low voltage (SELV) operation. It may be
connected only to the supply voltage shown on the type plate.
When the module is operated with an external power supply, use only a SELV
supply that complies with IEC 950/EN 60 950/VDE 0805.
Connect the protecting line before you establish any further connections. When
you remove connections, disconnect the protecting line last.
Relevant for North America: The subject unit is to be supplied by a Class 2 power
source complying with the requirements of the National Electrical Code, table
11(b). If power is supplied redundantly (with two individual power sources), the
power sources together should comply with the requirements of the National
Electrical Code, table 11(b).
Relevant for North America: Use 60/75° C copper (CU) wire only.
Failure to follow this precaution can result in death, serious injury, or
equipment damage.
Note: In the case of the voltage supply being routed without redundancy, the ConneXium
499NES18100 indicates the failure of a supply voltage. You can prevent this message by
feeding in the supply voltage through both inputs.
WARNING