Siemens FS720 - Page 166

Repair
Fiber
-
optic network module FN2006 / FN2007 troubleshooting steps
24
166 | 178
Building Technologies
A6V10210416_j_en_
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Fire Safety
2018
-
08
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29
1 Normal condition
Figure 11: Normal condition
2 Optical fibers wrong way round
Figure 12: Optical fibers wrong way round
In addition, the following light up on the affected lines: fault indicators H2 / H3 on
the FN2001 network modules.
PowerA B
EF1
Link1
RX1
Fail1
Fail2
RX2Link2
EF2
FN2006/FN2007
PowerB A
Link1RX1
EF1
RX2
Fail2
Fail1
EF2
Link2
FN2006/FN2007
H3
H2
H1
A1B1 A2B2
H3
H2
H1
B1
A1
B2
A2
A1
B1
A2
B2
A2
B2
A1
B1
FN2001
FN2001
Line1
Line2
Line1
Line2
Node 1
Node 2
VsysA
VsysA
Fault example zone
PowerA B
EF1
Link1
RX1
Fail1
Fail2
RX2Link2
EF2
FN2006/FN2007
PowerB A
Link1RX1
EF1
RX2
Fail2
Fail1
EF2
Link2
FN2006/FN2007
H3
H2
H1
A1B1 A2B2
H3
H2
H1
B1
A1
B2
A2
A1
B1
A2
B2
A2
B2
A1
B1
FN2001
FN2001
Line1
Line2
Line1
Line2
Node 1
Node 2
VsysA
VsysA