Moxa IMC-101G Installation Guide Page 11

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Redundant Power Inputs
Both power inputs can be connected simultaneously to live DC power sources.
If one power source fails, the other live source acts as a backup, and
automatically supplies all of the IMC-101G’s power needs.
Alarm Contact
The IMC-101G has one Alarm Contact located on the top panel. For detailed
instructions on how to connect the Alarm Contact power wires to the two
middle contacts of the 6-contact terminal block connector, see the “Wiring the
Alarm Contact” section above. A typical scenario would be to connect the
Fault circuit to a warning light located in the control room. The light can be
configured to switch on when a fault is detected.
The Alarm Contact has two terminals that form a Fault circuit for connecting to
an alarm system. The two wires attached to the Fault contacts form an open
circuit when (1) the IMC-101G has lost power from one of the DC power
inputs, or (2) one of the ports for which the corresponding PORT ALARM Dip
Switch is set to ON is not properly connected. If neither of these two
conditions occurs, the Fault circuit will be closed.
DIP Switch Setting
IMC-101G DIP Switch
123
ON DIP
1234
PORT ALARM
LFP
AN
NOTE: To activate updated DIP switch
settings, power off and then power on the
IMC-101G.
Dip Switch 1 (Default: Off)
ON: Enables the PORT Alarm. If the port’s link fails, the relay will form an
open circuit and the fault LED will light up.
Off: Disables the corresponding PORT Alarm. The relay will form a closed
circuit and the Fault LED will never light up.
Dip Switch 2 (Default: ON)
ON: Enables LFP (Link Fault Pass-Through)
Off: Disables LFP (Link Fault Pass-Through)
Dip Switch 3 (Default ON: AUTO)
ON: FX port in Auto (auto-negotiation) mode
Off: Forces FX port to 1000M
Dip Switch 4
Reserved for future use
ATTENTION
When Force mode is used, the LFP function will be disabled.
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