IntelliSense FlexGuard-Plus FG-930 Installation Instructions

The .G-930 from IntelliSense is a dual technology glassbreak detector that
uses flex detection and audio discrimination to detect breaking glass.
The .G-930 uses separate microphones to sense flex and audio frequen-
cies. The flex microphone is sensitive to ultra low frequencies, the type
generated by a blow to a glass window. The audio microphone detects the
higher frequencies of breaking glass.
The flex microphone is also equipped with an advanced acoustic filter for
more stable flex detection. This filter is specially designed to prevent the
microphone overload caused by very loud sounds.
The .G-930's audio technology remains off until the flex technology detects
a blow to the glass. .or an alarm condition to occur, the audio must detect
the frequency of breaking glass within a defined time-window after the flex
detects a blow to the glass.
Because both technologies must detect and verify glass breakage, false
alarms are virtually eliminated.
.EATURES
•
Dual flex/audio technology
Separate microphones for
•
audio and flex detection
• Advanced acoustic filter to
prevent microphone overload
•
8 - 14 VDC operation
• Low 30 mA at 12 VDC current
draw
•
Alarm memory
• Transient protection
MOUNTING LOCATION
The .G-930 can be mounted on walls, in corners, even on false or suspended
ceilings. Refer to the guidelines below when selecting a mounting location.
•
The unit must have a direct line of sight to, and a clear view of,
the protected glass.
•
Locate the .G-930 within 30' (9 m) of the glass to be protected.
•
Curtains, blinds, and other window coverings will absorb energy
from breaking glass. Heavy curtains, for example, will effectively
block the sound signal. In these cases, mount the unit on the
window frame behind the window covering, or above the
window. Make sure to test the unit thoroughly for proper
detection.
•
Do not mount the unit in front of air ducts or forced air fans, or
close to bells measuring 2" (or larger) in diameter.
.lexGuard-Plus
Dual Technology
Glassbreak Detector
INSTALLATION INSTRUCTIONS
Model
.G-930 30' range max
•
Energized form C alarm relay
with voltage supervision
•
R. immunity
• Indicator LEDs
•
No adjustment on audio
• Adjustment on flex detection
to fit characteristics of each
location
Cover tamper switch
•
• Noise burst rejection circuit
MOUNTING PROCEDURE
Orient the unit as shown in .igure 1. Remove the screw located at its top.
While depressing the latch near the top of the unit, swing the front cover
forward. Use the back cover as a template to mark holes for the mounting
screws and wiring, then drill the holes.
TM
Tip: If mounting the .G-930 near heavy machinery or central air
conditioning, test the glass-break function before mounting. Use
a 9 V battery for power, and tape the sensor to the desired
mounting location. Refer to the .lex Adjustment, Testing the .G-
930, and .inal Testing sections to determine which location will be
most suitable.
Note: If you plan to corner-mount the unit, remove the printed
circuit board before marking and drilling holes for the mounting
screws.
Pull the wiring into the unit through the back cover. Using the two mounting
screws, mount the rear housing at the desired location.
After removing screw at top of
unit, depress this latch to open
housing
.igure 1 Mounting the .G-930
WIRING
Observing the proper polarity, wire the unit as shown in .igure 2. (Use 22
to 14 AWG.) Reverse-polarity connections will not damage the unit.
Tamper
.orm A (NC)
50 mA, 30 VDC
Alarm
.orm C
500 mA max, 24 VDC max,
30 VA max
Power
8 - 14 VDC
30 mA typical at 12 VDC
.LEX ADJUSTMENT
To adjust the flex technology of the .G-930: Use a screwdriver to set the
flex sensitivity control (R5) at MAXIMUM by turning it all the way clockwise.
Refer to .igure 3 on the back side of this page.
Turn on any heating/air conditioning system in the vicinity and observe the
yellow flex LED (DS2) for approximately one minute. Excessive subsonic
(inaudible) noise typically produced by air handling systems may cause
the flex LED to flash randomly.
If it flashes randomly, turn the R5 control counterclockwise just until the
flashing stops.
.or surface mounting
.or corner mounting
(score and pull flap open)
.igure 2 .G-930 Terminal Strip
REAR HOUSING
Wire Entry
Knockouts
.RONT HOUSING
NC
C
NO
C
NC
V-
V+