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P/N 144783999-
4 (ML) • REV E • ISS 11MAY18
Item
Description
2.
End-of-line loop: Tamper output is isolated from the alarm
relay output.
The impedance of the tamper loop is now 4,7
kΩ.
Terminal 4 and 5 of the alarm output must be used when
connecting to the control panel. Impedance of alarm relay
loop is 4,7
kΩ.
3.
Dual loop: With a dual loop, the tamper and the alarm loops
can be monitored over two wires. In Figure 8 two examples
are shown on how to connect the detector to the control panel
and the positions of the jumper J1 in the different detectors:
dual loop, single device (item 1) and multi devices (item 2).
In normal situations (no alarm) the dual loop impedance is
4,7
kΩ.
When a detector alarm occurs, the alarm relay contact will
open and the impedance of the dual loop increases to 9,4
kΩ,
indicating an alarm. When the detector housing is opened, the
tamper circuit will be open and the dual loop is interrupted,
indicating a tamper alarm.
J2 and J3: Range adjustment
Adjust the PIR and microwave ranges to be adjusted
independently by setting J2 and J3 (see Figure 2).
Always select the appropriate range setting for the dimensions
of the area protected. Verify coverage pattern and adjust, if
required.
Table 2: Range adjustment
Jumper
DD477AM(C)/DD478AM(C) DD497AM(C)/DD498AM(C)
J2: MW range
16 m
20 m
10 m
12 m
7 m
7 m
J3: PIR range
16 m
20 m
10 m
12 m
Alarm memory
See Figure 5.
Note:
First set the appropriate active control voltage (CV)
using DIP switch 6.
Connect CV to terminal 10 when the system is armed. When
the system is disarmed, disconnect the CV. If an alarm occurs
during the armed period, a flashing LED will indicate which the
detectors caused the alarm. Reapplying the CV (rearming the
system) will reset the LED indication and memory.
Remote enable/disable of walk test LED
See Figure 5.
To walk test the detector, disconnect the CV from terminal 10
(latch) and connect it to terminal 11. The detector’s LED will
now light up and then go out again as the alarm relay opens
and closes, making the walk test possible.
Notes
•
Only enabling the walk test will not clear the alarm
memory. After disarming the system following an alarm,
switch the walk test On. When you switch walk test to Off,
the indication of memorised alarms will reappear. Only
when CV is re-applied to terminal 10 (i.e. the system is
rearmed) will the memory be cleared and the LEDs turned
off.
•
To enable the walk test LED without a remote CV input,
set DIP switch 5 to the On position. After the walk test, set
DIP switch 5 to the Off position. See
“Microwave disable”
note below.
•
UTC Fire & Security recommends that the detector is
regularly walk tested and the communication with the
control panel is checked.
•
Microwave disable:
The DD400AM(C) series has the
additional feature that whenever the system is disarmed
with the walk test off, the microwave transmitter will be
switched off. The detector will then operate as a PIR only.
With no CV and DIP switch 5 in the Off position, the
detector also operates as a PIR only.
DIP switch settings
See Figure 2, item 12, and Figure 9.
Switch 1. When to indicate the trouble output
On: Signals trouble only when the system is disarmed (day
mode).
Off: Always signals trouble.
Switch 2. Anti-masking sensitivity
On: Selects a higher level of anti-masking sensitivity.
Off: Selects the standard anti-masking sensitivity.
Switch 3. Resetting the trouble output
On: Resets the trouble output after alarm.
Off: Resets the trouble output only when authorized.
Switch 4. How to signal the trouble output
On: Signals the anti-mask signals on both the trouble and
alarm relay and signals the technical fault to trouble relay only.
Off: Signals the anti-mask and technical fault on the ETO.
Switch 5. LED indication
On: Enables both LEDs on the detector at all time.
Off: Puts both LEDs under the control of the Walk test and
Latch input when the system is disarmed.
Note:
With no CV and switch 5 in the Off position, the detector
also operates as a PIR only.
Switch 6. Control voltage (CV) polarity
See Figure 5.
On: Provides the standard UTC Fire & Security logic with
active high logic to enable walk test and latch inputs.
