AlarmSense Installation, Commissioning & Operating Manual
Approved Document UI-ALS-01 Issue 2.0
7
ABOUT THIS PANEL
POWER SUPPLY MODULE
Power Supply Speci
fi
cation
Mains supply
10% / -15% 50Hz max current
1A
Mains supply fuse
2 Amp (T2A 250V)
Not accessible for servicing. Internal to
switch mode power unit
Internal power supply rating
1.5 Amps total including battery charging Maximum load shared between outputs
= 0.9A
Power supply output voltage
19.92 - 30.09vdc
Tol/- 0.1%
Maximum continuous load for battery
standby (ImaxA)
ImaxA = 575mA
ImaxB not speci
fi
ed
Minimum current drawn by panel
(example)
4 Zone
I min = 85mA
2 Zone
I min = 75mA
Maximum ripple
120 mV p-p
Supply and charger fault monitored
Min/max battery size and type
2 x 3.2Ahr 12volt VRLA
Use Yuasa NP range batteries
Other equivalent batteries may be
used but have not been tested for the
purposes of EN54 approval.
Battery charging voltage
27.3 vdc nominal at 20 deg C
Temperature compensated
Battery charging output current
1.5A PSU 630mA
Current limited 10 Ohms
Battery high impedance fault (Batt Hi Z)
Resistance > 1 Ohm
1 hour reporting time
Max current drawn from batteries
1.5 Amps with main power source
disconnected. Battery fuse 3A LBC
20mm.
V+
V-
E
N
L
24v
+
ve
output
O/P
Vo
l
tage
ad
j
ust
(defau
l
t
setting
27v4
at
20
o
C)
24v
-ve
output
E
ar
th
N
eutra
l
L
iv
e
M
ains
input
T
emperatur
e
c
ompensation
input
fr
om
@
te
rmina
l
on
main
PC
B
www.acornfiresecurity.com
www.acornfiresecurity.com