Securiton ASD 531, Техническое описание

Страница: 69 / 105

Installation
ASD 531, Technical description, T 140 416 en 69 / 105
6.6.3 Control
The ASD 531 units connected to an FACP are controlled according to the detection zone mapping using the FACP states
“Zone ON/OFF” and “Reset”. Two possibilities are available:
•
Control via supply voltage (auxiliary relays in the ASD power supply line);
•
Control via the “Reset external” input.
6.6.3.1 Control via voltage supply by means of auxiliary relay
Depending on the location of the ASD power supply, the auxil-
iary relay may be placed in the FACP or directly in the
ASD 531.
The auxiliary relay can be actuated in the following ways (see
Fig. 34 ):
A. line plus or minus
B. SW output of the FACP
C. SW output or function of a control module
The function types described above are determined by the
FACP technology used; it is therefore essential to contact the
manufacturer and/or the supplier of the FACP for details be-
fore implementing.
Danger
•
The EMC protective elements at the input of
the ASD electronics cause a brief current
peak (5 A / 1 ms) when the supply voltage is
applied. When using auxiliary relays with a
maximum contact rating of 1 A, this may lead
to the relay contact sticking. For this reason
auxiliary relays with a contact load of over
1 A
should generally be used, e.g. PMR 81 semi-
conductor relay (see Fig. 34c) ).
•
The ASD supply path routed via the auxiliary
relay contact must be short-circuit-proof or
routed via a fuse component (circuit-breaker
card).
Notice
•
When using a PMR 81 semi-conductor relay,
it may be necessary to invert the actuation
signal (PMR only has a normally open (NO)
contact function).
•
To guarantee comprehensive emergency run-
ning properties, the connection must in all
cases be implemented in such a way that if
there is an FACP computer failure the ASD
will continue to function (reset input not actu-
ated).
Fig. 34 Control via supply with relay
or
from line plus/minus, relay in the FACP
A)
B)
C)
B)
A)
from line plus/minus, relay in the ASD
from SW otuput of FACP, relay in the FACP
from SW output of FACP, relay in the ADW
from SW function of control module, supply from FACP or local
Supply
Supply
Supply
Supply
Supply
Control
module
Alarm
transmitter
local
supply
local
supply
Line
Line
Line
Line
Line
OC output
OC output
FACP
FACP
FACP
FACP
FACP
PMR 81
- or +
- or +
+ or -
+ or -
Line-specific
resistances or
alarm transmitter
Line-specific
resistances or
alarm transmitter
Line-specific
resistances or
alarm transmitter
Line-specific
resistances or
alarm transmitter
ASD 531
1
2
8
13
St
Al
1 3
2
4
ASD 531
1
2
8
13
St
Al
ASD 531
1
2
8
13
St
Al
ASD 531
1
2
8
13
St
Al
ASD 531
1
2
8
13
St
Al