MA-SE-HE00-01-11 Manual HEMA eng rev11
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6.
TERMINAL 5 - NEGATIVE SOUND-BLOCK INPUT
It gives a 0V signal to terminal 5 thus activating the sound interruption trigger.
7.
TERMINAL OUT ANM AND FAULTS LED
The microcontroller managing the sounder is able to check if recharge, battery, loudspeaker and drivers are working properly. In case of faults, the open
collector output OUT ANM opens while the LED located on the sounder board shows the type of fault by making a certain number of flashes followed
by a short pause (please see chart here below for FAULTS LED signalisation).
The microcontroller automatically performs every 4 hours the battery current test. Moreover, other tests are performed on regular basis. Usually, if the
sounder is properly supplied, the faults output (terminal 7) remains at 0 Vdc (max consumption 50 mA). In case any of the tests performed fails, the
faults output disconnects from the ground and becomes free. Moreover, the microprocessor is always under self-test and in case of failure or
malfunctioning, it gives a free output with sound interruption.
To reset the fault appeared: eliminate the fault cause. Then:
-
(see scheme below): wait 10 seconds, let terminal n°4 (STI) free, take it to 12 Vdc, wait 10 seconds and let terminal n°4 free again. This procedure resets
all faults;
-
all faults are anyway reset after every alarm (+C), with the exception of those concerning the battery that are reset after 12 hours from battery restore
(replacement). The sounder performs all tests again and therefore updates battery faults too.
At the first sounder supplying (13.8 Vdc or battery), anomalies automatically reset once the cause disappears; this makes the installation easier. After
the first activation of the sounder, anomalies reset through a command to STI terminal or tC.
To launch the remote test, see scheme here above. This action launches the test that lasts 60 seconds. During the test, the sounder verifies if it is
working properly and provides signalization of any faults through the faults output (OUT ANM) and the faults LED as shown in CHART 1: FAULTS below.
In case a fault occurs, the LEDs of the flashing light flash faster.
CHART 1: FAULTS
FAULT TYPE
LED
LD1
Output
OUT ANM
Speaker interruption (test performed every 10 s)
1 FLASH
OPEN
No recharge voltage (recharge V < 12 Vdc) (test performed every 10 s)
2 FLASHES
OPEN
Battery not connected (test performed every 12 hours)
3 FLASHES
OPEN
Low battery (battery V < 10.5V) (test performed every 12 hours)
4 FLASHES
OPEN
Damaged battery – internal resistor over 3.5 Ohm (test performed every 12 hours)
5 FLASHES
OPEN
Speaker drivers failure (test performed every 10 s)
6 FLASHES
OPEN
No anomaly
OFF
0V
8.
CONNECTION OF MICRO SWITCH ANTI-OPENING AND ANTI-REMOVAL TAMPER
Connect the tamper line coming from control panel in series to the two wires of micro switch located on the sounder using the dedicated terminals
TAMPER 8 and 9.
9.
CONNECTION OF ANTI-FOAM (LS model)
Connect the two wires of the antifoam device in series to the micro switch and the tamper line coming from control panel.
10.
CONNECTION OF ANTI-DRILLING (LSP model)
Connect TAMPER A.P. terminals in series to the anti-foam, the micro switch and the tamper line coming from control panel.
FREE
ELIMINATE FAULT CAUSE – 10 SEC – FREE
12 Vdc
+12 Vdc
10 SEC
