Chapter 2: Installation and configuration
16
LaserSense 100 Aspirating Smoke Detector Installers Handbook
Electrical installation
The detector is supplied with removable terminal blocks (Refer to Figure 3 on
page 6). These may be removed from their sockets by lifting them up at right
angles to the circuit board.
Take note of the orientation of each terminal block and its function before
removing it. It may also be beneficial to mark the connection wires with suitable
identification labels or colored rings to aid in the connection process.
Each detector is supplied with three RF suppression ferrite rings. To ensure
compliance with all relevant EMC requirements, the conductors of each cable
should be wound once around a ferrite as shown here before entering the
relevant connector.
Note:
Both power conductors and relay conductors should be on a separate
ferrite, but different forms of signal conductor (e.g. RS-485) can share the same
ferrite.
There should be about 30 mm (1-1/4 in.) of wire between the end of the ferrite
and the terminal block to give adequate stress relief. To achieve this, it is
necessary to strip back the cable screen approximately 130 mm (5 in.). The
screen should be terminated under the cable gland cap as shown in Figure 8
below.
Figure 8: Looping relay connection wires around a suppression ferrite
WARNING:
Electrocution hazard. All connections should be made with the
power turned off.
Summary of Contents for LaserSense 100
Page 1: ...LaserSense 100 Aspirating Smoke Detector Installers Handbook P N 10 3512 505 LS10 04 02MAR17...
Page 46: ...Chapter 4 Troubleshooting 38 LaserSense 100 Aspirating Smoke Detector Installers Handbook...
Page 52: ...Chapter 5 Maintenance 44 LaserSense 100 Aspirating Smoke Detector Installers Handbook...
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