Bosch Conettix B465 Installation And Operation Manual page 24

24 en | Installation
Input loops
The B465 monitors the input loops for normal, shorted, or open conditions between an input
terminal and any of the input common terminals. The configuration for the input determines
how the B465 responds to these conditions.
The B465 ignores input loops for 120 seconds after power up to ensure that the connections
have stabilized.
Install a 2.21 kΩ resistor at the far end of the input loop when wiring the on-board inputs to
provide a reference for supervision. The total resistance for the wire length and contacts,
minus the end-of-line (EOL) resistor, must not exceed 100 Ω.
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Figure 4.7: On-board input loop wiring
Callout ᅳ Description
1 ᅳ 100 Ω maximum (total wire out and back)
2 ᅳ Input terminal
3 ᅳ Common
4 ᅳ Normally closed contacts (NC)
5 ᅳ Normally open contacts (NO)
6 ᅳ Combination: Normally open contacts and normally closed contacts (NO/NC)
7 ᅳ2.21 kΩ EOL resistor (P/N: F01U034506)
8 ᅳ Red
9 ᅳ Brown
Notice!
No End of Line (EOL) resistor for unused inputs
You do not need to install an End of Line (EOL) resistor for unused inputs (inputs are
disabled by default).
Notice!
UL commercial fire requirement
UL does not permit normally closed loops for commercial fire applications.
2017.11 | 05 | F.01U.311.207
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Installation and Operation Manual
Conettix Universal Dual Path Communicator
2.21 kΩ
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Bosch Security Systems, Inc.
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