Detector Wiring - Tyco FlameVision FV300 SERIES User Manual

INSTALLATION
6.2.3 MOUNTING THE FV312 SERIES DETECTOR WIRING
In addition to the installation recommendations given in 6.2, the following applies when installing
FV312 series detector:
a) The detector in-built cable should interface with the field cable via an EExe
junction box with EExe cable entry glands suitable for the size of cable used. The
FlameVision EExe has been designed to provide a ready-made solution to
interfacing with any of the inputs/outputs of the FV300 detector.
b) It is a requirement of the ATEX/IECEx approval that the cable between the
detector and the EExe junction is protected against mechanical damage. For this
purpose the FV312 has been designed to mate with a flexible metal conduit. It is
recommended that the Kopex Liquid Tight LT-H 316 stainless steel 20mm
conduit system is used (Kopex FSH04). This conduit uses a Type H flame
retardant covering to give a high resistance to oils and chemicals. A connector kit
(Kopex KSO/1005) is available to terminate the conduit and couple directly onto
the FV312 enclosure.
c) The selected mounting position for the detector must take into account the siting
of the EExe junction box. The detector is supplied with a maximum of 1m cable
and allows sufficient slack in the flexible conduit for adjusting the orientation of
the detector when using the adjustable mounting bracket.
6.3

DETECTOR WIRING

6.3.1 GENERAL
The wiring between the detectors and control equipment must provide the required degree of
mechanical protection but be sufficiently flexible to allow the detector alignment to be adjusted to
suit the area protected.
To meet the mandatory EMC requirements of EN 61000-6-3 for emissions and EN 50130-4 for
susceptibility, it is necessary to terminate the armouring / screening of the cable through 360° at
the detector cable gland and ensure that the detector is solidly bonded to a good local earth.
Fig. 24 through to Fig. 26 show wiring diagrams for the FV311 series of detectors. The FV312
series detectors are wired in the same way. The cores are listed in Table 5.
Notes:
1) If FV300 detectors are installed in dust risk environments then the walk-test wired
input should be used. The WT300 is not approved for dust risk environments.
2) It is recommended that the RS485 Configuration port from the FV300 is wired
back to a central point to support remote configuration and diagnostics. The
configuration port can be wired as a bus connecting up to 16 detectors. An
RS485 to PC interface (RS232 or USB) is required that can communicate at up
to 38,400 baud with direction controlled by the RTS line.
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