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Seismic detector GM565
Installation
Application
The seismic detector GM565 provides reliable protection for safes, armoured safes
and strongrooms against attack with explosives and break-in attempts with any of
the known tools, such as diamond-head drills, hydraulic pressure tools, oxygen
lances and attack using explosives.
Operation
Cutting hard materials such as concrete, steel or synthetic armouring systems
gives rise to mass acceleration. This creates mechanical oscillations which are
transmitted as structure-borne sound. The sensor of the seismic detector, which is
connected to the object to be monitored, picks up these oscillations and converts
them into electrical signals. The detector electronics analyses the signals in a se-
lected frequency range typical for break-in tools, and triggers an alarm via a relay
contact.
Adjustable detection sensitivity and selectable response time allow the GM565 to
be used for all known monitoring applications, such as:
– safes
– strongroom walls
– modular vaults
– strongroom doors
– automatic cash dispensers
– special leight-weight safes (LWS) (synthetic armouring systems)
Coverage area fig. 1 + 2
The coverage area is designated as the surface of a mechanical obstacle (strong-
room wall or armoured safe wall) which is monitored by a detector. The coverage
area is highly dependent on the material of the object to be monitored. Practical ex-
perience has shown that the operating radius for steel and reinforced concrete is
«r» = 4m (fig. 1).
The coverage area of the detector on strongroom walls may also extend to part of
the ceiling, floor, or over corners if an homogeneous connection exists. In such
cases the operating radius is reduced to ¾ of the range setting (fig. 2).
Joints between two materials always damp the structure-borne noise transmis-
sion. One detector on the door and one on the body must always be installed.
This also applies to entrance doors of strongrooms.
For modular vault applications please refer to the special instructions (page 2) for
modular vaults.
Surveillance of the surface fig. 3 + 4
To simplify the planning procedure on large surfaces, the circular coverage area
can be considered as a square:
For 75% surveillance of the surface: diameter within square = 8m x 8m = 64m
(fig. 3).
For standard surveillance of the surface: square in circle = 6m x 6m = 36m
(fig. 4).
It is of course also possible to choose intermediate values. Several detectors may
be installed on the same object.
Opening the detector fig. 5 + 6
The GM565 detector is provided with a double housing. This complicated two-
chamber encapsulation provides the detector with extremely good shielding from
electromagnetic interference and from accidental or intentional damage.
Unscrew the loss-proof front screws and lift off the metal cover (fig. 5).
Fold down the housing for the electronics unit by pulling gently (fig. 6) .
The seismic sensor is now exposed. Use only the three pre-assembled
cross-slot screws M4 x 8mm provided in order to fix the detector.
Important! Under no circumstances loosen the three fixed sensor fixing screws.
Direct mounting on steel fig. 7 to 9
The detector can be installed directly on steel plates with a smooth surface. Ensure
that any residual paint between the steel surface and the seismic sensor is com-
pletely removed and the mounting surface is level to within 0.1mm. If this is not pos-
sible, use mounting plate GMXP0.
Remove residual paint from sensor installation site (fig. 7).
Stick on drilling template and centerpunch drill holes (fig. 8).
Drill three holes of 3.2mm ø and tap M4 thread at least 6mm deep. Deburr
threaded holes (fig. 9).
Install detector. Do not use silicon grease between sensor and object!
Indirect installation with mounting plate GMXP0 fig. 10 to 13
In the case of uneven or hardened steel plates, weld on mounting plate GMXP0.
Remove residual paint from the welding area (fig. 10).
The welding symbol must be visible on the front of the mounting plate (fig. 11).
Weld mounting plate in four fixing points. Ensure correct positioning (fig. 12).
Weld along surfaces indicated. Tap off slag and remove weld spatter from the
plate surface (fig. 13).
Mount detector. Do not use silicon grease between sensor and mounting plate!
Installation on concrete using mounting plate GMXP0 fig. 14
Never install the detector directly on a bare ore plastered concrete surface, since
bending forces may cause damage to the seismic sensor. Plaster of less than
10mm need not be removed.
Drill centre hole 10mm ø at least 50mm deep using a sintered carbide bit.
Insert metal plug into drilled hole flush with the concrete surface (fig. 14). Use
metal plugs only!
Ensure that the mounting plate is correctly positioned. Press the mounting plate
onto surface, knock in screw with plug and tighten well. The plate should no long-
er be capable of rotation.
Mount the detector. Do not use silicon grease between sensor and mounting
plate!
1235e_A4
Recessed mounting with wall recess plate GMXW0 fig. 15 to 17
Drill 9mm ø hole in wooden concrete mould. Fasten the wall recess set by insert-
ing threaded bolt and tightening wing nut (fig. 15). Push the installation conduit
through the polystyrene block.
After removing mould, unscrew threaded bolt. Scrape out polystyrene and cut off
conduit flush (fig. 16).
Mount the detector. Do not use silicon grease between sensor and recess plate!
Mount cover plate (fig. 17).
Cable feed in wall box and floor box fig. 18
Insert cable with reserve loop into the box. Ensure appropriate cable length when
drawing the cable in (fig.18).
Installation in floor box GMXB0 fig. 19 to 21
To install the floor box GMXB0, a recess with a base area of at least 300 x 300mm
and a depth of 80mm is required (fig. 19). Use polystyrene block GMXBS0 to keep
this recess open when pouring in the wet concrete.
Two threaded bolts M6x100mm screwed into metal plugs provide the acoustic con-
nection between the detector and the concrete floor.
Level floor box using the nuts on the two threaded bolts. Fix position finally by
tightening the lock nuts (fig. 20).
Feed installation conduits through sealing sleeves. Fill recess with wet cement.
Pull cable through and thoroughly seal the entry openings for protection against
moisture (fig. 21).
Mount detector. Do not use silicon grease between sensor and floor box!
Fit cover plate. Cut out wood or carpet floor covering and stick to cover plate.
Night safes fig. 22
When money is inserted in a night safe, vibrations are generated. They can be re-
duced by the following measures (fig. 22):
Incorporate a gap between the chute and the night safe.
Fit insulation material between chute and the night safe.
Line the entry flap and the inside of the safe with sound proofing material.
Use plastic cash boxes.
Programming fig. 23
S
= Connection for test transmitter (option GMXS1)
K
= Auxiliary terminals (option IRKL3)
SW = DIP switches for the following settings
After the detector housing has been opened, use the DIP switches to select the re-
spective settings.
Modes
SW1
Polarity for TEST
SW2
Response time
2
SW3
Sensitivity A – D
2
SW4
SW5
Material type
Interference signal
SW6
memory LED
SW1 Polarity for TEST fig. 23
Functional check of the seismic detector only in combination with the GMXS1 test
transmitter.
Important: Open control input is HIGH (internal pull-up resistor).
Controlling with active HIGH, a resistor (approx. 2kΩ) must be switched on 0V.
At TEST ON, the functional check is performed, and a positive test result is output to
the alarm relay and electronic alarm output (identical to alarm).
Control signal for TEST ON
HIGH (+12V)
LOW (0V)
SW2 Response time fig. 23
Standard: Normal response time for standard applications.
Delayed: Double response time to delay any interference produced by automatic
cassette dispensing mechanisms, automatic cash dispensers, and in case of ob-
jects with long break-through time.
SW3 and SW4 Sensitivity setting fig. 23
Select the sensitivity setting to suit the application, the material and the object with
the associated interference (fig. 23).
Important: The detection radius will decrease as sensitivity is reduced.
Important: During commissioning, be sure to check for function-related noise (see
"Commissioning").
Additional sensitivity reduction
An additional sensitivity reduction is possible for applications (r max. 1m), which
cause extreme parasitic signals (permanent integration at TEST PT, terminal 9),
such as applications in cash dispensers or safe doors with mechanical time clocks.
For this purpose, terminal 7 (REMOTE) is connected up to terminal 1 (0V; sensitiv-
ity reduction input). The recommended sensitivity setting for this application is «B»
or, if necessary, «C» (fig. 23), but SW2 has to be OFF at all times.
SW5 Material type fig. 23
Standard: This setting applies to standard materials, concrete and steel.
LWS: This setting is to be used in case of lightweight safe (LWS) materials, or plas-
tic armouring systems, respectively, to compensate for the attenuation factor which
is very high with these objects which are sandwich structures for the most part.
ON
OFF
low
high
standard
delayed
see fig. 23 and
see fig. 23 and
"Settings recommended"
LWS:
standard:
synthetic armouring sys-
concrete steel
tems
on
off
SW1
OFF
ON
p5
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