Metrodata FM4900, User Manual

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STATUTORY INFORMATION
76-02-011F 6
2. 6 Power Supply
The FM4900 is powered by a mains power supply with an input voltage range 100-250 VAC
/ 50-400 Hz. The maximum input current is approximately 0.2A rms. at 240V.
An alternative -48V DC power supply unit is available, the supply definition being minus 36
to minus 72VDC. The maximum input current is 1.0A. The -48V DC power supply provides
cable ends for connection by the user to the main power source. The cable colour codes are:
Figure 2. 1 DC connections
Safety Notes:
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 FM4900 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.
Green/yellow Earth
Blue 48V DC
Black Zero