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ICP-CC488 | Installation Guide | 14.0
This configuration is suitable only for
normally-closed (N/C) contacts. If
normally-open (N/O) contacts are used,
as is the case with most smoke
detectors, a short circuit on one zone
activates both zones connected in
parallel.
If you require N/O contacts when using
split EOL resistors, refer to Figure 12 and
Figure 13 on pages 57 and 58 for
information on how to connect N/O
contacts.
Figure 10: Split EOL Resistors Using N/C
Contacts
1
5
4
8
1 – Zone 1
2 – Zone 2
3 – Zone 3
4 – Zone 4
5 – Zone 5
Bosch Security Systems, Inc. | 12/08 | F01U089457-02
Zone Information
9
2
9
10
6
10
3
9
9
7
10
10
6 – Zone 6
7 – Zone 7
8 – Zone 8
9 – 3K3
10 – 6K8
Figure 11: Split EOL Resistors with Tamper
Circuit
2
1
4
6
5
1 – Tamper
2 – Zone 1 3K3
3 – Zone 5 6K8
Figure 12: Split EOL Resistors Using One N/O
Contact
1
2
3
1 – +12 V
2 – Zone Input
3 – Zone
4 – N/C
EN | 57
3
1
4
4 – 1K
5 – Zone 1
6 – +12V
4
6
5
7
8
5 – EOL 3K3
6 – EOL 6K8
7 – EOL 4K7
8 – N/O
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