Installing, exchanging and connecting modules
Ethernet switch FN2008 and safety module FN2009
7
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Building Technologies
1 Ethernet connection to PMI & mainboard
2 Optical Ethernet (loop network)
P1…P4 Electrical Ethernet ports
P5, P6 Optical Ethernet ports
RX Optical receiver channel
TX Optical transmission channel
Wiring
WARNING
Heavily concentrated light
Eye damage
Do not look into the red light of the transmitter (TX).
● The fiber optic cable is wired cross-wise:
The optical transmitter (TX) of one port must always be connected to the other
switch with the optical receiver (RX) of the other port.
● The bending radius of the fiber optic cable must not be less than 20 mm.
If cabling is being carried out using multiple PMI & mainboards and the FN2008, a
loop can be created accidentally. Please observe the following information.
NOTICE
Impairment of system function
● Pay attention to the Ethernet cable connection if you are connecting more
than one PMI & mainboard.
Never connect a port P1…P4 to a port P1…P4.
7.14.4.2 Connector strip for supply
Pin Designation Description
1 L1+ Supply input 1 (+DC 24 V)
2 M1 Supply input 1 (DC 0 V)
3 M2 Redundant supply input 2 (DC 0 V), optional
4 L2+ Redundant supply input 2 (+DC 24 V), optional
The L1+/M1 and L2+/M2 connections are designed for redundant supply and are
not plated-through. Use of the redundant L2+/M2 supply inputs is optional and not
necessary for EN-54 compatibility.
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