Alarmtech GD 335 User manual

© 2014 Alarmtech GD335 manual 1410en Page 1of 2
Detectors
Passive glass break detector
Instruction manual GD 335
DESCRIPTION
GD 335 is a passive glass break detector glued on the glass
surface. The detector is designed in the form of two-ter-
minal component. It has to be connected to Control and
Indication Equipment (CIE) or another specialized inter-
face unit like IU 300, in alarm loop configured as EOL/NO
(End-Of-Line –Normally Open).
EOL resistor has to be placed at the end of the alarm loop
providing continuous analogue communication with CIE
drawing fixed value of current.
The detector has high resistance in normal state and does
not draw any current from EOL loop. It has a latching cir-
cuit lowering rapidly its internal resistance during alarm.
Increase of current consumption from EOL loop is signal-
ling intrusion to CIE.
It is specifically designed for surveillance of:
shop-windows
glass sliding doors
single-glazed windows
other vulnerable glass surfaces in public offices and
private homes.
GD 335 complies with:
EN 50131-2-7-2:2012, security grade 2
EN 50130-5:2011, environmental class IIIA
FEATURES
Detects glass break of float glass
Large coverage area
Very resistant to disturbances on the glass
No sensitivity adjustment
Ideal for 24-hour loop perimeter protection
Leads are polarity independent
Low current consumption
Completely sealed plastic casing
OPERATING PRINCIPLE
GD 335 is equipped with a piezoelectric sensor that de-
tects mechanical waves propagating in the glass pane.
During glass breakage, a very short vibration pulse with
high amplitude and very high frequency contents is gen-
erated and propagates with high speed in the glass. This
pulse triggers the detector, changing its voltage/current
characteristics.
Detector has high resistance in normal state and
practically does not draw current from EOL loop
Detector draws maximum of 7.5 mA in alarm state
from EOL loop signalling intrusion to CIE
WIRING
#
Signal
Wire colour code
Function
Description
1
a1
White
Terminal a: (-) or (+)
Terminal a (a1, a2 - shorted)
2
a2
White
Terminal a: (-) or (+)
3
b1
White
Terminal b: (+) or (-)
Terminal b (b1, b2 - shorted)
4
b2
White
Terminal b: (+) or (-)
Wire identification hints:
Shorted wires are marked with an additional small label
Shorted lines be also easily identified with the help of ohm-meter, as both pairs consist of 2 wires shorted inside
detector
CIRCUIT DIAGRAM
GD 335
a2
b2
a1
b1

© 2014 Alarmtech GD335 manual 1410en Page 2of 2
INSTALLATION
Warning #1: correct gluing of the detector is vital for its
function. Follow the installation instructions carefully.
Warning #2: GDK 100 adhesive kit must be used for safe
installation.
Procedure:
1. Before installation, test the detector using GVT-500 or
GVT-5000 tester. Use the 12 V output of the GVT-5000
tester to test the detector.
2. Select the spot on the window pane if possible at
about 5 cm distances from the frame. Distance be-
tween the detector and the frame must not be lower
than 20 mm.
3. Clean the glass surface with the cleaning solvent (bot-
tle no. 1). Let the surface dry.
4. Apply the enclosed sticker template for precise instal-
lation.
5. Clean the detector’s bottom surface with the brown
graining pad to remove any grease.
6. Apply activator (bottle no. 2) on the bottom surface of
the detector and on the installation spot. The sticker
template (if used) will prevent staining the glass out-
side the installation area. Let the surfaces dry for 1-2
minutes.
7. Place a small drop of glue (bottle no. 3) in the centre
of the detector’s bottom surface and spread it evenly
in a thin layer with enclosed triangular spatula. A thin
layer is very important for a good and fast bond.
8. Press and hold the detector against the glass surface
on the selected spot until you feel it adheres. (10 sec).
9. Let the glue harden for another 5 minutes before you
start working with the cables.
10. Remove the surplus glue from the side of the detector
using the triangular spatula. Remove the sticker tem-
plate (if used).
CONNECTION TO CONTROL AND INDICATION
EQUIPMENT
Warning #3: the alarm loop with GD 335 detector(s) has
to be terminated with an EOL resistor. Only EOL configu-
ration enables transmission of all events from GD 335 de-
tector to Control and Indication Equipment required by
EN50131-2-7-2:2012 Grade 2.
GD 335 can be connected to CIE input directly –one de-
tector to one input. Alarm loop has to be configured as
EOL/NO and terminated with proper EOL resistor. Alarm
loop should be able to reset.
GD335 can be also connected to CIE with the help of IU
300 interface unit. IU 300 provides EOL/NO configuration
and up to 10 GD 335 detectors on the loop can be con-
nected to one IU 300 unit.
TECHNICAL DATA
Type of protected glass
float
Standard glass thickness
4 mm
Detection radius
2 m
Voltage range across detector in EOL loop
4 –15 VDC
Max. voltage ripple
2 Vpp at 12 V
Current consumption quiescent
Max. 5 A
Current consumption in alarm state
Max. 7.5 mA
Alarm output
Current flowing through detector
Alarm indication
LED
Alarm hold time
Latching
Alarm reset
EOL loop voltage across detector below 2 V
Cable
3 m, ф 3,2 mm, 4x0,14 mm2
Environmental class (EN50130-5:2011)
IIIA
Operating temperature range
-40°C to +55°C
Operating humidity
max. 95% RH
Housing material
plastic ABS
Dimensions:
Ф27x11 mm
Security grade (EN50131-2-7-2:2012)
2
Approvals
SBSC, VdS, INCERT and others
Window frame
Hinge
Minimum distances between detector and window
frame
Glass pane
EOL resistor
GD
335
a1 a2
b2
b1
GD
335
a1 a2
b2
b1
GD
335
a1 a2
b2
b1
IU 300
EOL/NO
alarm loop
with reset
Connection to Interface Unit
GD
335
a1 a2
b2
b1
EOL resistor
EOL/NO alarm loop
with reset
+12 V
Connection to CIE input
Rp