19
3.6 CONNECTING THE BATTERIES
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.
NOTE:
If the AC Mains is connected before the batteries, the panel will show a Power Supply fault for up to 1 minute
until the monitoring cycle has finished polling. This is normal. If the fault doesn’t clear after 1 minute, check
connections.
3.7 BATTERY CHARGING VOLTAGE CHECKS
The battery charging voltage is factory calibrated to 27.3V
DC
+/- 0.2V @ 20oC. 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 27.6V
DC
+/- 0.2V @ between 11oC - 40°C.
c) To test the batteries, turn off the mains and see if the system will run on the batteries. Check the battery
voltage. This 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 9),
checking at the 28V & 0V output terminals with a calibrated volt meter. Batteries should be disconnected and
the Access Level 3 DIL switch should b
e set to ‘ON’ (see page 17), which will override the temperature
compensation controls. Carefully adjust the voltage to 27.6V
DC
+/- 0.2V. When completed, switch off Access
Level 3 DIL switch and 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.
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Содержание Quick Zone XL
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