Metrodata MetroLAN-1000, Подробное краткое руководство по эксплуатации

Страница: 8 / 28

STATUTORY INFORMATION
4 76-02-059A
2. 6 Power Supply
The MetroLAN is powered by a mains power supply with an input voltage range 100-250
VAC / 50-400 Hz. The maximum operating input current is 400mA rms at 100VAC. Mains
power is connected via the IEC inlet on the rear of the unit.
An alternative -48VDC powered unit is available. The input voltage and current ranges are
minus 36 to 72 volts DC, 1000 - 500mA. A Buccaneer type socket is fitted to the rear panel,
and a plug is provided with the unit for the customer’s own wiring. The connections are
labelled on the rear panel of the MetroLAN. A schematic of the female -48V DC connector
mounted on the rear panel in the place of the AC IEC sockets is shown below.
Figure 2.2 -48VDC connections
Figure 2. 3 Schematic -48V DC power connector
On some units, an additional Ground stud may be located on the rear panel to permit a
separate Ground connection to be made.
Safety Note:
The MetroLAN must be connected to mains safety earth for correct operation.
Excessive voltages are present inside the unit. There are no user serviceable parts inside
the unit, and the cover should not be removed by unqualified personnel. The unit must not
be exposed to damp or condensing conditions. The MetroLAN must be connected to safety
earth for correct operation.
2. 7 On board batteries
The user is reminded that Metrodata motherboards use Lithium/Thionyl Chloride 3.6 volt
battery cells for the maintenance of RAM. These batteries must be handled with care. There
may be a risk of explosion if a battery is incorrectly replaced. Do not recharge, force open,
heat or dispose of by fire. Replace only with the same type of battery.
Disposal must be in accordance with the manufacturer’s instructions. If in doubt about any
aspect of battery replacement or disposal, please call Metrodata Technical Support
Department.
Pin no Connection
1 -48VDC
2 Ground
3 0VDC
5
3
1
Pin 1 = -48V
Pin 2 = 0V
Pin 3 = Earth