Securiton ASD 535, Mounting And Installation, Page: 31 / 40

Installation
ASD 535, Mounting and installation, T 140 333 d en 31 / 40
3.6 Connection variants
Notice
The connection variants are determined by the possible lines and FACP technologies. For more information
about wiring alarm transmitters, line monitoring elements etc., please contact the manufacturer and/or supplier of
the fire detection system.
In all cases the ASD 535 must have an emergency power supply (country-specific, e.g. compliant with EN 54-4).
3.6.1 Power supply
The ASD 535 must always have emergency power supply.
Depending on the available output current of the fire alarm
control panel (FACP) and the number of ASD 535 units to be
connected, the power supply can be provided by the FACP or
the power supply will have to be supplied by auxiliary means
locally.
The supply is via terminals 1 and 2. In applications where a
redundant power supply line is prescribed (country specific), it
is connected to terminals 3 and 4, Fig. 19 .
Notices
• The supply inputs are not connected inter-
nally in the ASD and thus cannot be used for
direct continuation to neighbouring systems.
• The terminals of the ASD 535 are designed
for maximum 2.5 mm². For continuing the
supply line to a neighbouring ASD it may be
necessary to install additional distributor or
support terminals.
Fig. 19 Types of power supply
Notice
To determine the required power supply
and cable cross-section, it is essential to
perform the calculations described in sec-
tion “Planning” (T 131 192). For applica-
tions with redundant power supply, the cal-
culations must be performed for both supply
lines individually.
3.6.2 Reset input
The reset input is potential-free (opto-isolator) and can be ac-
tuated “plus” side or “minus” side, Fig. 20 . The input operates
in the range of 5 to 30 VDC and in an impulse bandwidth of
0.5 to 10 s. Thanks to the continuous current consumption of
approx. 3 mA in the overall operating range, the triggering can
be performed directly via an open collector module.
If a continuous signal is present longer than 20 s, the ASD 535
is switched inactive, the fault relay becomes active (triggered),
and the fan is switched off. Once the continuous signal is
switched off, the ASD is switched to armed again. Switching
inactive via the “Reset external” input works only if the
ASD 535 is not equipped with an XLM 35 or SLM 35.
Fig. 20 Reset input
ASD 535
1 2 3 4
ASD 535
1 2 3 4
ASD 535
1 2 3 4
ASD 535
1 2 3 4
ASD 535
1 2 3 4
ASD 535
1 2 3 4
ASD 535
1 2 3 4
Supply from FACP
Local supply, individually Local supply, by zone
Redundant power supply line (optional, country specific)
1)
1)
1)
1)
~/= ~/= ~/=
Supply from potential “A”
1
2
20
19
ASD 535
1
2
20
19
ASD 535
1
2
20
19
ASD 535
Reset impulse,
plus switched
from potential
“A”
Reset impulse,
or minus switched
from potential
“B”
Reset impulse,
minusswitched
from potential
“A”
Reset
external
Reset
external
Reset
external