Siemens FS720 - Page 168

Repair
Fiber
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optic network module FN2006 / FN2007 troubleshooting steps
24
168 | 178
Building Technologies
A6V10210416_j_en_
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Fire Safety
2018
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08
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29
4 Energy supply interrupted
Figure 15: Energy supply interrupted
In addition, the following light up on the affected FN2001 network modules: fault
indicators H2 and H3. The fault relay on the affected module responds.
5 Ground fault on line 1, A1/B1
Figure 16: FN2006_FN2007_Fehlerszenario_5_Erdschluss_B1_VP
The ground fault on line 1 (A1/B1) is mirrored on line 2 (A2/B2); in addition, EF2
flashes. The fault relay on the affected module responds.
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
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