User Manual

15263 Ver 2.1 DRAFT E PAC Portico 2200/1200 Series Installation Guide

5.1.6.2 Standby Battery Requirement

IMPORTANT

For door controllers, the battery voltage should match the lock output voltage.

Now that you know the total continuous current requirement of the door controller plus readers, locks and

ancillaries, you should multiply this figure by the number of hours standby needed.

In the enclosure supplied, there is room for two 12V 7Ah batteries. If this does not provide sufficient

backup, the batteries must be located outside the enclosure or the controller fitted in a larger enclosure.

Example

A door controller with a continuous current of 2A will require at least a 4Ah battery to provide 2

hours cover (2A x 2 hours = 4Ah).

IMPORTANT

The Ah rating of a battery is usually determined when discharged over a 10 or 20 hour period. If a

fully charged battery is discharged over a shorter period than this, as in the example above, it will

last for less time than its rating suggests. You should consult the battery manufacturer's correction

factor charts to determine a more accurate figure. This means you will probably need a higher rated

battery than expected.

5.1.6.3 External Charger

In order that a fully discharged battery can recover to a fully charged state within 24 hours, consider using

an external charger when using more than a 7Ah battery. Use the wiring shown in Figure 18.

Figure 18 Using an External Battery Charger

The battery charger unit has to provide a trickle charge at the same voltage as the controller power

supply. If the controller's power supply is set for 12V dc, the battery charger unit must provide a trickle

charge at 13.8V dc. If the controller's power supply is set for 24V dc, the battery charger unit must provide

a trickle charge at 27.6V dc.

Note

If the battery charger and the door controller are not set to the proper output voltages as described,

the door controller could be damaged.

It is recommended that a diode is installed as shown in Figure 18.