Visonic DISC User manual

DE1111 1
DISC
DISCDISC
DISC
Ceiling Mount PIR Detector Installation Instructions
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1. INTRODUCTION
. INTRODUCTION. INTRODUCTION
. INTRODUCTION
The DISC is the smallest 360°ceiling mounted passive infrared
detector presently marketed.
The DISC provides a nearly conical pattern of maximum 10.5 m
(36 ft) diameter, when installed on a 3.6 m (12ft) ceiling.
False alarms caused by environmental disturbances are virtually
eliminated with alternate polarity pulse counter signal processin g
and a low-noise pyroelectric detector.
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2. SPECIFICATIONS
. SPECIFICATIONS. SPECIFICATIONS
. SPECIFICATIONS
OPTICAL
Detection Pattern: A virtually conical pattern of maximum 10.5 m
(36 ft) diameter, when installed on a 3.6 m (12ft) ceiling.
COVERAGE PATTERNS
The DISC pattern is nearly conical (viewed from detector to the
floor). See Figure 1.
The maximum mounting height is 3.6m (12 ft). The coverage
pattern at floor level is as per the following table:
Mounting
Height (m)
Pulse
Count 1
Pulse
Count 2
2.4
3
3.6
7.3 m diam.
9 m diam.
10.8 m diam.
6 m diam.
7.3 m diam.
9 m diam.
ELECTRICAL
Voltage: 9 to 15.5VDC.
Current: I5mA at 12 VDC (21 mA max.).
Relay Output: Normally closed (fail-safe) contacts. 18 ohm
resistor in series with contacts. Rating - 0.1A resistive/24VDC.
Alarm Period: 2-7 seconds
Tamper Contacts: Normally closed. Rating - 0.5A resistive/
24VDC.
LED: Walk Test enabled or disabled with internal link.
Detector: Dual-element low-noise pyroelectric detector.
Pulse Counter: Two position selector, 1 or 2 pulses with
alternate polarity signal processing.
MOUNTING
Ceiling Mounting: Maximum mounting height 3.6 m (12 ft)
ENVIRONMENTAL
Operating Temperature: -10°C to 49°C (14°F to 120°F).
Storage Temperature: -20°C to 60°C ( -4°F to 140°F).
PHYSICAL
Dimensions (diam. x H) :86 x 24 mm (3-3/8 x 15/16 in).
Weight: 64 grams (2 oz)
Color: White.
Figure 1 - DISC PIR Coverage Pattern
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3. INSTALLATION
. INSTALLATION. INSTALLATION
. INSTALLATION
3.1 Mounting
The DISC is installed on the ceiling.
The maximum installation height is 3.6m (12 ft).
A. Mount the unit so that the expected motion of an intruder is
perpendicular to the detector and not into the detector.
Be sure to install the detector on a stable ceiling, to avoid
vibrations.
Note: Passive infrared detectors are sensitive to changes in
infrared energy caused by an object moving across the unit's
field of view.
Detection of changes in infrared energy depends on the
amount of infrared energy transmitted by the moving object,
and the temperature difference between the object and the
background. Because of this the PIR may fail to respond
under certain temperature and background conditions, in
which the temperature difference is too small.
B. The DISC is extremely immune to air turbulence and RFl
interference.
However, to minimize possible false
alarms, it is highly recommended
that you avoid aiming the detector at
heaters, sources of light, or windows
subjected to direct sunlight. Avoid
mounting the DISC in locations
where air drafts could flow from the
ceiling or from close walls.
Also avoid running wiring close to
high power electrical cables.
C. Hold the unit base as shown in
Figure 2. Rotate the cover counter
clockwise until it stops. Separate the
cover from the base.
Figure 2 - Removing
the Cover
Note: If the cover does not separate easily from the base,
insert a 1/8" screwdriver between a tab (on the cover) and a
slot (on the base). Lower the screwdriver handle until the base
separates from the cover and removes easily.

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D. Mount the base (equipped
with the printed circuit
board) in the location
selected for optimum
coverage. Using the two
mounting holes at the back
of the base fasten the unit
firmly to the mounting
surface to avoid possible
vibrations. ( Figure 3).
Line up the 3 tabs on the
cover with the 3 slots on the
base. Fit the cover over the Figure 3 - Installing the Cover
base. Rotate the cover clockwise until it stops.
3.3 Wiring
Route the wires into the
detector via the wiring knockout,
See Figure 5 .
Connect wires to the terminal
block in the following order.
Refer to Figure 4.
A. Connect Tamper N.C.
terminals to a normally
closed 24-hour separate
Figure 4 - Terminal Block
Wiring
alarm circuit of the control panel. Tamper contact will open
when cover is removed
B. Connect Relay N.C. terminals to a normally closed burglar
protection zone of the control panel. Relay contacts will open
when motion is detected, or during power loss. The relay
contacts are rated at 100 mA, 24 VDC maximum (resistive
load only). An 18 ohm resistor is internally connected in series
with the relay contacts.
C. Connect the l2VDC (+) and (-) terminals to a 9 to 15.5 Volt DC
power source and check for correct polarity. The UL listed
control unit or power source should have a back-up battery
that is capable of supplying power for at least four hours of
operation, during power failure. Current drain of each sensor
is approximately 15mA at 12VDC (21mA maximum).
3.4 Setting the Pulse Counter
The DISC is equipped with a selectable alternate polarity pulse
counter which can be set to count two consecutive pulses with
opposite polarity, before activating the alarm relay. Pulse count
signal processing requires that the moving person will cross both
elements of the dual detector before the alarm relay is activated.
This provides maximum protection against false alarms caused
by environmental disturbances.
Figure 5 - Printed Circuit Board
2 pulse setting
The two pulse logic may be selected only when the DISC is
installed in temperature controlled locations.
1 pulse setting
This setting actually disables the pulse counter. It should be used
when maximum detecting sensitivity or fast "catch" performance
are of highest importance, such as in high security installations.
3.5 Walk Test
A. Apply 12 VDC power and allow five minutes for the unit to
warm up and stabilize before testing.
B. Set the pulse counter per Para. 3.4 above.
C. Walk-test the range and coverage area by crossing the
pattern from different directions while observing the LED. The
LED lights up whenever the unit detects motion. Allow 10
seconds between each test for the unit to stabilize. Repeat the
test while entering the pattern from different directions, and at
various locations and distances from the detector. This test
should be performed up to the far end of the coverage range.
D. After testing, the LED can be disabled to prevent unauthorized
persons from tracing the coverage pattern. To disable the
LED, set the jumper marked "LED" to the OFF position.
Note: The coverage area should be checked by an alarm
technician at least once a year. To assure proper continuous
functioning, the user should be instructed to perform a walk
test of the coverage pattern to assure an alarm signal prior to
each time the alarm system is armed.
WARRANTY
WARRANTYWARRANTY
WARRANTY
Visonic Ltd. and/or its subsidiaries and its affiliates ("the Manufacturer") warrants its
products hereinafter referred to as "the Product" or "Products" to be in conformance with
its own plans and specifications and to be free of defects in materials and workmanship
under normal use and service for a period of twelve months from the date of shipment by
the Manufacturer. The Manufacturer's obligations shall be limited within the warranty
period, at its option, to repair or replace the product or any part thereof. The Manufacturer
shall not be responsible for dismantling and/or reinstallation charges. To exercise the
warranty the product must be returned to the Manufacturer freight prepaid and insured.
This warranty does not apply in the following cases: improper installation, misuse,
failure to follow installation and operating instructions, alteration, abuse, accident or
tampering, and repair by anyone other than the Manufacturer.
This warranty is exclusive and expressly in lieu of all other warranties, obligations or
liabilities, whether written, oral, express or implied, including any warranty of
merchantability or fitness for a particular purpose, or otherwise. In no case shall the
Manufacturer be liable to anyone for any consequential or incidental damages for breach
of this warranty or any other warranties whatsoever, as aforesaid.
This warranty shall not be modified, varied or extended, and the Manufacturer does not
authorize any person to act on its behalf in the modification, variation or extension of this
warranty. This warranty shall apply to the Product only. All products, accessories or
attachments of others used in conjunction with the Product, including batteries, shall be
covered solely by their own warranty, if any. The Manufacturer shall not be liable for any
damage or loss whatsoever, whether directly, indirectly, incidentally, consequentially or
otherwise, caused by the malfunction of the Product due to products, accessories, or
attachments of others, including batteries, used in conjunction with the Products.
The Manufacturer does not represent that its Product may not be compromised and/or
circumvented, or that the Product will prevent any death, personal and/or bodily injury
and/or damage to property resulting from burglary, robbery, fire or otherwise, or that the
Product will in all cases provide adequate warning or protection. User understands that a
properly installed and maintained alarm may only reduce the risk of events such as
burglary, robbery, and fire without warning, but it is not insurance or a guarantee that such
will not occur or that there will be no death, personal damage and/or damage to property
as a result.
The Manufacturer shall have no liability for any death, personal and/or bodily injury
and/or damage to property or other loss whether direct, indirect, incidental,
consequential or otherwise, based on a claim that the Product failed to function.
However, if the Manufacturer is held liable, whether directly or indirectly, for any loss or
damage arising under this limited warranty or otherwise, regardless of cause or origin, the
Manufacturer's maximum liability shall not in any case exceed the purchase price of the
Product, which shall be fixed as liquidated damages and not as a penalty, and shall be the
complete and exclusive remedy against the Manufacturer.
Warning: The user should follow the installation and operation instructions and among
other things test the Product and the whole system at least once a week. For various
reasons, including, but not limited to, changes in environmental conditions, electric or
electronic disruptions and tampering, the Product may not perform as expected. The user
is advised to take all necessary precautions for his /her safety and the protection of
his/her property.
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VISONIC LTD. (ISRAEL): P.O.B 22020 TEL-AVIV 61220 ISRAEL. PHONE: [phone], FAX: [phone]
VISONIC INC. (U.S.A.): 10 NORTHWOOD DRIVE, BLOOMFIELD CT. 06002-1911. PHONE: [phone] FAX: [phone]
VISONIC LTD. (UK): UNIT 1, STRATTON PARK, DUNTON LANE, BIGGLESWADE, BEDS. SG18 8QS. PHONE: [phone] FAX: [phone]
VISONIC LTD. 1998 DISC D-1111-0 NEW : DE1111- (REV. 1, 4/98)