6
IK-E283-001E
Table 2
ADC
working
mode
Addressable
loop current
drawn by ADC
Admissible quiescent current
of detectors in branch line
behind separator
Ra alarm resistor
of manual call
point
Intrinsically safe
line EOL resistor
1
6.8 mA
0.5 mA
1 kΩ
13 kΩ
2
16 mA
1.0 mA
1 kΩ
5.6 kΩ
3
2.5 mA
0.1 mA
1 kΩ
47 kΩ
As an example, for currently manufactured TUN 38Ex, PUO-35Ex and DUR-40Ex detectors:
Mode „1” – enables installation behind an intrinsically safe separator:
–
8 pcs. DUR-40Ex intrinsically safe smoke detectors, or
–
4 pcs. TUN –38Ex intrinsically safe heat detectors (KDB certificate limitation), or
–
1 pce. PUO-35Ex intrinsically safe flame detector (KDB certificate limitation).
Mode „2” - enables installation behind an intrinsically safe separator:
–
10 pcs. DUR-40Ex intrinsically safe smoke detectors (system limitation).
Mode „3” - enables installation behind an intrinsically safe separator:
–
1 pce. TUN –38Ex intrinsically safe heat detector, or
–
1 pce. PUO-35Ex intrinsically safe flame detector, or
–
1 pce. DUR-40Ex intrinsically safe smoke detector, or
–
up to 10 pcs. intrinsically safe manual call points, equipped with a 1 kΩ alarm resistor (system
limitation).
NOTE: A branch line short circuit behind an intrinsically safe separator is signalled as a fire alarm. A line
short circuit between a separator and an adapter is signalled as a fault.
The separator should be installed in a safe zone, directly behind an endangered zone. An intrinsically safe
line behind a separator should be routed using an intrinsically safe unscreened cable.
In the case of intrinsically safe manual call points, the adapter should be declared as an immediate alarming
device (2
nd
stage alarm) and should be appropriately assigned in the control panel.
7 INSTALLATION
7.1 Installation place and fastening
The ADC-4001M adapter is designed for wall or ceiling mounting, inside premises, using the G-40 base.
The base should be fastened to a ceiling with two screws and expansion anchor bolts (Ø6 recommended). It
is advised to drill the bolt holes using a pattern of 63 mm hole spacing. Improper hole spacing may result in
the base deformation when the screws are strongly tightened. It may cause difficulties in inserting the
adapter into the base.
