D-9105RExd
Digital Flame Proof Reflective Beam Detector
Installation and Operation Manual
The Intelligent Solution
11
than 8m (less than or equal to 40m), one reflector is enough. When
the distance is more than 40m (less than or equal to 100m), four
reflectors are needed. Two
6 plastic expansion bolts are needed
to fix a single reflector. Mounting size is shown in Fig.9a. If four
reflectors are needed, place them seamlessly as shown in Fig. 9b.
Fig. 9a
Fig. 9b (Not to Scale)
4. Wiring
(1)
It is recommended to use multi-core copper cable with core cross
section
≥
1.0mm
2
, and external diameter
8mm~
10mm in Zone 1
and 2. The cable shall meet field requirements on resistance to
heat, corrosion and fire. If there’
s no special requirement,
10
screened cable can be used. Connect the screen layer to the safety
earth position inside the housing. Cable layout shall also meet
requirement in explosive environment. It’
s prohibited for the cable
to have joints in explosive environment. If a joint is necessary under
special condition, it’
s only allowed in Zone 2 with the joint protected
with explosion-proof junction box.
(2)
Connect 24VDC power cable (without polarity) to terminal D1 and
D2 of the detector. K11, K12 are volt-free fire output contacts. K21
and K22 are volt-free fault output contacts. No cable connection is
necessary for the reflectors. Terminals are shown in Fig. 12. Z1 and
Z2 are for polarity-insensitive connection with FACP loop. Refer to
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