STARPLUS STSe Key System, Руководство по установке

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System Preparation 3-7
Chapter 3 - Installation
STARPLUS STSe - Installation Manual August 2005
Built-in Power Supply
The built-in Power Supply in each BKSU and EKSU will convert 105V- 129V AC power to +5V DC
voltage output. The power capacity of the Power Supply is as follows:
Battery Backup Unit Installation
The Battery Backup Unit (BBU) provides
power for the system during a power failure.
The BBU connects to the
STSe via the
connector on the side of the BKSU.
Battery Backup Wiring
If local AC power fails, the system can be
equipped to operate from external batteries.
The external batteries must provide 24 Volts
DC. This is generally accomplished by
connecting two 12-volt batteries to the strip
connector on the front of the BBU as shown.
The BBU provides charging current to the batteries during normal AC power operation at a
maximum of about 0.5 amp. During battery operation, the BBU discontinues battery operation
if AC power is restored or the battery voltage is too low to maintain proper system operation.
System Backup Duration
The length of time the system operates on the batteries is dependent on several elements
including: battery charge state, condition of the batteries, capacity of the batteries, and the size
of the system (number of station ports).
The following chart gives the approximate backup time for several system sizes and different
battery capacities in ampere-hours.
System Battery Replacement - WARNING
In most cases … the system battery will never need to be replaced.
However, in the event that the battery is determined to be fully discharged, use caution when
replacing as it could explode if installed improperly.
»
Replace battery with a similar battery type, as recommended by battery manufacturer.
»
Dispose of the used batteries according to the battery manufacturer’s instructions.
+5V DC -5V DC +30V DC Battery Backup
2.5A 0.5A max 2.5A max External 4B-BBU
Ports
Battery Capacity
10AH 20AH
4 16 Hours 32 Hours
8 8 Hours 16 Hours
16 4 Hours 8 Hours