Technical/Programming Manual
FT1020G3 Rev 2.2.1
66
9.1.6.3
Intrinsically Safe photoelectric smoke detectors
SLR-E-IS
Intrinsically Safe photoelectric smoke detector (2810).
A conventional photoelectric (optical) smoke detector, to be plugged in the
intrinsically safe mounting base. The detector has two built-in LEDs that are lit to
indicate that the detector has generated fire alarm. Zone classification: Cat. 1, 2
or 3. BASEEFA classification: II 1G EEx ia IIC T5 (-20°C < 55°C). Max 20 per
zone.
2840
Analogue IS smoke detector. An analogue / addressable photo- electric smoke
detector. The detector can be used with higher IP rating back- box. Three cable
glands are supplied with the back-box. The detector has one built-in LED to indicate
that the detector has generated fire alarm. The detector is programmed in EBLWin
as an analogue photoelectric smoke detector 4401 (in NORMAL mode) but it has
to be connected to a COM loop via an IS barrier unit 2842. ATEX class: Ex ia IIC
T5.
9.1.6.4
Intrinsically Safe heat detectors
DCD-1E-IS
Intrinsically Safe heat detector. A conventional Rate of Rise heat detector,
fixed temperature 60°C (class A1), shall be plugged in the intrinsically safe
mounting base. Two built-in LEDs that are lit to indicate that the detector has
generated fire alarm. Zone classification: Cat. 1, 2 or 3. BASEEFA classification:
II 1 G EEx ia IIC T5, T
amb
=55°C. Max 20 per zone.
2841
Analogue IS heat detector. An analogue / addressable heat detector. The detector
can be used with a back-box for higher IP rating. Three cable glands are supplied
with the back-box. The detector has one built-in LED to indicate that the detector
has generated fire alarm. The detector is programmed in EBLWin as an analogue
heat detector 3308 (in NORMAL mode) but it has to be connected to a COM loop
via an IS barrier unit 2842. ATEX class: Ex ia IIC T5.
9.1.7
Intrinsically Safe Manual Call Points
MCP 1A-R470SGIS
Intrinsically Safe manual call point (2814).
A conventional
outdoor manual call point (NO contact and alarm resistor 470 ohms). The call point
is connected to Galvanic isolator 2820. The call point is surface mounted with the
supplied back-box (IP67) and has two compression glands for the cable entries.
BASEEFA / ATEX classification: II 1 G EEx ia IIC T4, T
a
= -30 to +70°C. Max 20
per zone.
9.1.8
Other COM loop units
3366AU
External power supply. Conforms to AS7240.4. 3366AU is connected to a
COM loop, i.e. it is monitored from FT1020G3 and e.g. loss of the main power
source will generate a fault in FT1020G3. It can be used as power supply for
external equipment requiring 24 V
DC
with battery backup, e.g. the 3364 unit (see
page 61). It also has a "/Mains OK" output (normally low), intended to be connected
to the corresponding input on the 3364 unit.
An oyster metal enclosure 320W x 330H x 125D mm is used for 3366. There is
space
for two maintenance-free sealed Lead-Acid backup batteries, 2 x 12V, 7Ah
or 12Ah as the second power source. Batteries with higher capacity (up to 65 Ah)
have to be placed outside the housing. There are cable inlets on the top, and back
sides of the housing.
The unit has one 24VDC power supply output for external equipment with up to
2.1 A or 0.85 A continuous current consumption, at the same time as battery
charging is in progress. In case of no battery charging e.g. fire alarm in the system,
the continuous current consumption can be up to 4 A.
