ASP-R Installation, Commissioning & Operating Manual
Approved Document Ref: UI-ASP-R-01 Issue 3.0
11
INSTALLATION
CONNECTING THE BATTERIES
BATTERY CHARGING VOLTAGE CHECKS
Batteries of even very small capacity are capable of delivering very high currents which can cause fire or
injury, therefore battery connections should be done with caution.
The panel is supplied with battery leads already connected to the battery terminals on the main PCB.
These leads are coloured red for +ve and black for -ve.
2 x 12v batteries should be connected in series
using the white jumper lead provided. See
diagram.
To optimise the service life of the batteries,
the battery charger output voltage varies with
temperature.
N.B.
In the event of mains failure, the battery charger
circuit will protect the batteries from full discharge
by disconnecting them when they reach below
19v. When the mains supply is restored the
batteries will be automatically reconnected.
+ve
-ve
12v SLA Battery
12v SLA Battery
+ -
BATTERY
1
2
3
ON
NOTE:
If the mains is connected before the batteries, the panel will show a Power Supply fault for up to 1 minute
until the monitoring cylce has finished polling. This is normal. If the fault doesn’t clear after 1 minute, check
connections.
The battery charging voltage is factory calibrated to 27.3vdc +/- 0.2v @ 20
o
C. This should not normally
require adjustment. Where battery problems are experienced, the following information should be
considered.
a) If a battery is disconnected from the charger, no voltage will appear on the output leads or terminals,
due to intelligent battery controls.
b) Check the power supply voltage at the 28v & 0v supply output terminals. With the batteries
disconnected the voltage should be 27.6vdc +/- 0.2v @ between 11
o
C - 40
o
C.
c)
To test the batteries, turn off the mains and see if the system will run on the batteries. Check the
battery voltage, should be 26.8v for a good battery or 22v for a flat battery.
d)
The power supply voltage can be adjusted using the potentiometer on the power supply module
(see page 7), checking at the 28v & 0v output terminals with a calibrated volt meter. Batteries should
be disconnected. Carefully adjust the voltage to 27.6vdc +/- 0.2v. When completed, re-connect the
batteries.
e) When the panel is re-charging a low battery, it should be possible to see the voltage across the
batteries increase gradually. If this is not occurring, the batteries or the panel may be faulty.
Summary of Contents for Alarm Sense Plus
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