Siemens FDFB291 Installation Manual page 6

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Collective: Use of shielded cables
See connection diagram in Fig. 8.
The detector line shielding must be connected in the
detector base with auxiliary terminals DBZ1190-xx.
There are two ways of connecting external alarm
indicators:
Variant A
1. Connect the positive pole of the external alarm
indicator to the positive pole for the external alarm
indicator on the detector.
2. Connect the negative pole of the external alarm
indicator to the negative pole for the external alarm
indicator on the detector.
3. Connect the shielding of the connection cable between
the external alarm indicator and detector on the
detector side to the positive pole for the external alarm
indicator via an auxiliary terminal DBZ1190-xx.
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Building Technologies
Fire Safety & Security Products
Variant B
1. Connect the positive pole of the external alarm
indicator to the positive pole for the external alarm
indicator on the detector.
2. Leave the negative pole for the external alarm indicator
on the detector unoccupied.
3. Connect the negative pole of the external alarm
indicator with the negative pole on the input side of the
detector line on the detector via an auxiliary terminal
DBZ1190-xx.
4. Connect the shielding of the detector line with the
shielding of the connection cable to the external alarm
indicator via an auxiliary terminal DBZ1190-xx.
For more information about the flame detectors,
see the following documents:
 007011 (Technical manual)
 008121 (Installation)
A6V10299652 (Commissioning)

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04.2010