Monacor SR-138X Installationsanleitung Seite 9

4 Mounting
To prevent access to the alarm unit, mount it at a height
that is hard to reach (minimum height 3 m above the
ground).
1) First unscrew the screw at the plastic cover of the
housing and remove the cover. Then unscrew the
two screws of the metal cover underneath and
remove it.
2) Position the rear panel of the housing at the in -
tended place of mounting, mark the three mounting
holes, then drill the holes.
3) Lead the connection cables coming from the alarm
control panel from the rear through the cable entry
hole next to the PCB, then use the mounting aux -
iliaries supplied to screw on the rear panel of the
housing.
4) Prior to an operational check, close the housing so
that the anti-tamper contact, which will trigger an
alarm if the housing is opened, is also closed.
5 Connection/Selection of Operating
Mode
WARNING The sound level of the siren is very high.
Therefore, when an alarm is triggered,
keep a sufficient distance to the alarm
unit or wear ear protection.
Never look directly into the flashtube
(17) for a longer period when the hous -
ing is open; its high brightness may
cause eye damage.
The type of connection to the alarm control panel
depends on the operating mode selected.
The unit is equipped with a blocking function which will
prevent an immediate alarm triggering in case of initial
operation or change of the settings → chapter 6.
5.1 Operating mode 1
operation without rechargeable battery,
alarm trigger ed with the operating voltage applied
(2-wire operation)
The settings for this operating mode are as follows:
jumper (1) removed
wire strap (9) closed
In this operating mode, an audible and visible alarm
will be triggered as soon as an operating voltage of
12 – 13.8 V is applied to the terminals SUPPLY (13).
The alarm output of the alarm control panel which will
supply this voltage must have a minimum current
rating of 1.2 A.
The connection for this operating mode can be found
in figure 2 on page 2.
5.2 Operating mode 2
operation without rechargeable battery,
alarm trigger ed via the two alarm inputs S and F
The settings for this operating mode are as follows:
jumper (1) placed
wire strap (9) closed
A permanent operating voltage of 12 – 13.8 V
applied to the terminals SUPPLY (13); the voltage
source must have a minimum current rating of 1.2 A.
The alarm is triggered via the alarm inputs S (15)
and F (14). Polarity and function of the alarm inputs are
adjustable → see chapter 7.
Figure 3 on page 2 shows the connection for this op -
erating mode if both alarm inputs have been set to
negative polarity.
5.3 Operating mode 3
operation with rechargeable battery,
alarm triggered via the two alarm inputs S and F
The settings for this operating mode are as follows:
jumper (1) placed
wire strap (9) open
The alarm unit is supplied with power via a recharge-
able battery 12 V/2 Ah (not supplied). The recharge-
able battery is connected via the red cable and the
black cable BAT (12) and is stowed in the battery com -
partment above the siren. The operating voltage of
12 – 13.8 V applied to the terminals SUPPLY (13) is
only required for charging the battery; the voltage
source must have a minimum current rating of 40 mA.
The alarm is triggered via the alarm inputs S (15)
and F (14). Polarity and function of the alarm inputs are
adjustable → see chapter 7. For anti-tamper protec-
tion, the alarm unit can additionally be set to trigger an
alarm if the battery charging voltage at the terminals
SUPPLY is missing → see chapter 9.
Figure 4 on page 2 shows the connection for this oper -
ating mode if both alarm inputs have been set to posi-
tive polarity.
5.4 Anti-tamper protection
In each operating mode, the alarm unit can be con -
nected to an anti-tamper line:
1) Connect the two lines of the two anti-tamper
contacts attached to the inside wall of the metal
housing to the terminal pair TAMPER (11).
2) Lead the anti-tamper line of the alarm control panel
via the two terminals TAMPER (16) of the terminal
strip.
Thus, the unit will be protected against tampering: If
the housing is opened or the unit is forcibly removed
from its place of mounting, the circuit will be inter rupted
when the corresponding anti-tamper contact is opened
and an alarm will be triggered.
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