D-300431 DUET-AM C/O Installer Guide
3
Applicable when DIP switch 3 is in ON position (anti masking ON):
EOL
TAMP
TST
12V
24 H
TAMPER
ZONE
ALARM SYSTEM TERMINALS
BURGLAR
ZONE
9
-
16 VDC
OUTPUT
24 H
TROUBLE
ZONE
DUET-AM TERMINAL BLOCK
WALK
TEST
SWITCH
USING AN E.O.L. RESISTOR
WHEN THE CONTROL PANEL
IS SET FOR E.O.L. OPERATION
NC
BURGLAR
ZONE
EOL
EOL
RESISTOR
NC
NO/TRB
Applicable when DIP switch 3 is in OFF position (anti masking OFF):
NC
NO/TRB EOL
TAMP
TST
12V
24 H
TAMPER
ZONE
ALARM SYSTEM TERMINALS
BURGLAR
ZONE N.C.
9
-
16 VDC
OUTPUT
DUET-AM TERMINAL BLOCK
WALK
TEST
SWITCH
USING AN E.O.L. RESISTOR
WHEN THE CONTROL PANEL
IS SET FOR E.O.L. OPERATION
NC
BURGLAR
ZONE
EOL
EOL
RESISTOR
BURGLAR
ZONE N.O.
Figure 6.
Terminal Block Wiring
Note:
Use RTV to seal the base opening(s) to prevent insects from
entering the detector.
TST INPUT LOGIC
The dual color LED may be enabled remotely for walk testing with a
test switch connected to the TST input as shown in Figure 6:
TST input grounded
- LED active
TST input floating or high (+12V)
- LED inactive (unless mode
switch 2 is ON).
3.4 The Power-up Process
After connecting the
(+)
and
(–)
terminals to the power source, the
DUET-AM C/O starts a 60-second warm-up period, indicated by
alternate flashing of the green and red lights.
Caution!
If the alternate flashing of the red and green lights does not
stop within 60 seconds, a failure has been detected by the self-test
circuitry or, if mode switch 3 is set to ON, the unit may be masked
(refer to Para. 3.5).
3.5 What Happens in Case of Masking?
Attention!
The following procedure is true only while
mode switch 3
is in the ON position.
If an attempt is made to stick masking material over the lens or put a
masking object close to the lens, a trouble alert will result about 60
seconds after masking:
The LED will flash red and green alternately;
The TRB relay will open and will remain so until masking is
removed and the detector is reset (see Para. 3.13 for procedure).
3.6 Visual Indications
The dual color LED is used to signal various alarm and trouble
messages as shown in Table 1 below:
Table 1.
Interpreting the Visual Indications
Visual Indication Significance
None
No
detection
Steady green (5 seconds)
MW walk-test detection
Flashing green
PIR walk-test detection
Steady red (1.5-5 seconds)
Alarm: MW + PIR detection
Flashing red and
- Trouble is being detected (or
green (alternately)
masking if mode switch 3 is ON)
- Initial warm-up routine (stops 60 seconds after
power up).
Notes:
1. During walk testing, the green light glows steadily (MW detection)
or flashes (PIR detection), depending on which one of the two
sensors discovered the movement first. Upon subsequent discovery
of the movement by the other sensor, the green light goes off and
the red light glows (alarm).
2. If the LED maintains alternate red and green flashing beyond the
warm-up period, a malfunction has been diagnosed (or, if mode
switch 3 is ON, the detector may be masked).
3.7 Mode Selector
The DIP switch mode selector is mounted on the unit’s PC board (see
Figure 4). It controls four functions as demonstrated in Figure 7.
ON
- 2 MOTION EVENTS
TRIGGER AN ALARM
OFF
- 1 MOTION EVENT
TRIGGERS AN ALARM
ON
1
2
3
4
NOT USED
ON
- LED PERMANENTLY
ENABLED
OFF
- LED DISABLED -
ENABLED VIA TST INPUT
O N
- A N T I - M A S K I N G
ENABLED. NO/TRB OUTPUT
OPERATES AS NORMALLY
C LOSE D TRB O UTPUT.
O F F
- A N T I M AS K IN G
DISABLED. NO/TRB OUTPUT
OPERATES AS NORMALLY
OPEN ALA RM OUTPU T.
Figure 7.
DIP Switch Mode Selector
Note:
Switch positions shown are factory default.
3.8 Vertical Adjustment
The vertical adjustment scale for the PIR sensor is located at the
upper right edge of the PC board (refer to Figure 4). Three positions
are available - FAR, MID and NEAR. All new DUET-AM C/O units are
set to the FAR position.
Note: For the optional long range lens No. 34D, the vertical scale
should be in FAR position.
To adjust, loosen the vertical adjustment screw, slide the PC board
along the vertical slot until the pointer indicates the required position
on the scale (see Figure 8). When done, tighten the adjustment screw
firmly.
Figure 8.
Standard Lens
Vertical Adjustment
Caution!
With swivel brackets in use, the effective detection ranges
may differ from those indicated in Figures 2 and 8.
3.9 Setting the Motion Event Counter
If you wish to set the PIR sensor for maximum false alarm immunity,
shift DIP switch No. 1 (SW-1) to ON. In this position, two consecutive
motion events are required to trip the PIR sensor. For faster catch
performance, shift SW-1 to OFF. In this position, only one motion event
is required to trip the PIR sensor.
3.10 PIR Walk Test
A.
Rotate the MW RANGE control fully counterclockwise to MIN.
B.
Make sure that the LED is enabled, either by setting mode switch
SW-2 to ON or by grounding the TST input.
C.
Mount the front cover in place.
D.
Walk into the detector's field of view at the expected far edge of
