AMT/PTD/PBX/0058/4/6/EN Installation and Maintenance Manual - Aastra 5000
Page 124 01/2011 Description des sous-ensembles
4.2 Power supply module
4.2.1 ADS 350XD (AXD iPBX)
4.2.1.1 Description
ADS 350AXD is the power supply module of the main cabinet and expansion cabinet of
an AXD iPBX. It replaces the ADS300XD module, and offers extra 50 W and an enhanced
cooling system (a plate has been added to the left side).
Depending on the Aastra XD configuration, power is supplied to the cabinets through one
or two
ADS350XDpower supply modules:
• For a simplex configuration, only one power supply module is used by the cabinet. A
ventilation system is then added instead of the second power supply module.
• For a simplex configuration with secure power supply, and for a duplex configuration,
two power supply modules are used per cabinet. The power supply modules then work
in load-sharing mode. If one power supply module becomes faulty, the other one
carries the entire load.
The mains power supply voltage is 115/230 V - 50/60 Hz - 350 W.
An optional, external 48V backup battery can be installed.
4.2.1.2 Functional description
Each power supply module has the following functional units (see Section 3.8.6):
• A 48V converter supplying the following voltages:
- +5 V/15 A,
--5 V/0.5A,
- +12 V/0.5 A. This current does not include the power supply to the four fans.
- -12 V/0.65 A,
-
-48 V / 2.9 A (DECT phone sets and base stations)
- ringer 70 V / 0.02A
a 48V rectifier supplying a 7 A current, used as follows:
- 2.1 A for the converter
- 2.9 for the DECT telephone sets and base stations
- 2A for charging a 16 Ah battery which offers the system 4 hours of autonomy.
The rectifiers of several power supplies can be connected in parallel to a battery.
The rectifier can be connected to a 115 V or 230 V (+/- 10%) mains, 50 Hz or 60 Hz,
without configuration,
• two fans supplied by the converter 12V DC voltage draw air towards the rear of the
cabinet.
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