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2.6 Failure Relay Output
The switch provides a relay output to report failure events to a remote alarm monitoring system. The
replay output is provided with two contacts in the terminal block next DC2 interface.
Use the provided 2P terminal plug for signal wiring and plug into the PF+/- contacts. The function is
designed as :
Alarm Events:
z
Input power failure
z
Specific port link down (The specific ports can be configured by software.)
Normal: PF+ and PF- shorted
Alarm:
PF+ and PF- open
Note: Be sure the voltage applied on PF+/- contacts is within the specification of
30VDC/1A max. or 120VAC/0.5A max.
2.7 Reset Button
The reset button is used to perform a reset to the switch. It is not used in normal cases and can be used
for diagnostic purpose. If any network hanging problem is suspected, it is useful to push the button to
reset the switch without turning off the power. Check whether the network is recovered.
The button can also be used to restore the software configuration settings to factory default values.
The operations are:
Operation
Function
Press the button more than 5 seconds when power up
Restore factory default settings
Press the button and release during switch operation
Reboot the switch
