AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 112 01/2011 Description et caractéristiques d’un PBX
3.8.7 Internal monitoring of AXS/AXL/AXD
A monitoring device built into the power supply module prevents full discharging of the
battery in the absence of mains, or in case of rectifier failure/shutdown.
The power supply module is fitted with:
• 4 fans (AXD), that is 2 fans per power supply module and per ventilation module, or
• 2 fans (AXL), or
• 1 fan (AXS, AXS12 and AXS6).
The converter stops when the fan(s) is (are) detected as faulty (tachometric monitoring
inactive). This condition is ignored for 3 seconds (AXS/AXL) or 90 seconds (AXD) after
the converter is powered up, to allow the replacement of a faulty power supply module or
ventilation module.
3.8.7.1 Battery
3.8.7.1.1 Description
AXL, AXS, AXS12 and AXS6 iPBX
An external, optional backup battery can be installed, to protect the iPBX from a power
supply failure and prevent service disruption and loss of critical data.
When an iPBX has several cabinets, a battery is available for each cabinet. However, the
same battery can be connected at the same time on the 2 or 3 cabinets of an AXD or AXL
or the 2 cabinets of an AXS. In this case, check that the battery can withstand the
charging current (2A per ADS300XD/ADS350XD power unit for charging the battery, 6A
per ADS300X/ADS350XD (AXL) power unit and 3 A per ADS150X (AXS) power unit).
• One battery per cabinet:
For proper operation (standard configuration), use a battery complying with the
specifications indicated in the following table:
TABLEAU 3.12 AXD, AXL, AXS, AXS12 AND AXS6 IPBX BATTERY
CHARACTERISTICS
BATTERY SPECIFICATIONS CAPACITY
Number of battery elements 4
Voltage 4 x 12 V
(12 V per battery element)
Capacity (amp/hours) AXD and AXL: 17 Ah
AXS/AXS12/AXS6: 7,5 Ah
Battery autonomy AXD and AXL: 4 h
AXS/AXS12/AXS6: 4 h
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