Dräger Oxylog 2000 - Page 22

External power supply with
DC/DC converter
● A DC/DC converter 2M 86 404 must always be
used when operating the ventilator with external DC
voltage (e.g. from the on-board power supply of the
vehicle).
The DC/DC converter should be used to connect the
Oxylog 2000 to on-board supplies of different
voltages (12 V, 24 V, 28 V). The fluctuations in the on-
board supply may be so great that the supply voltage
falls below or exceeds the range permitted for the
Oxylog 2000.
The DC/DC converter converts low voltage such as
the on-board voltage of a rescue vehicle (12 V or
24 V) or the medical distribution voltage of a rescue
helicopter (12 V or 28 V, e.g. Bucher-Wand) into the
distribution voltage (12.5 V) of the Oxylog 2000.
The DC/DC converter switches off automatically if the
on-board voltage falls below 10.5 V. The Oxylog 2000
generates a "power supply down" warning.
Oxylog 2000 carries on working without interruption
using the internal batteries or NiCd batteries. The
DC/DC converter switches on again automatically if
voltages higher than 10.5 V occur:
● Connect one side to the on-board power supply of the
vehicle and the other to the connector for external DC
power at the top of the ventilator.
Using the converter in combination with the ventilator
holder 84 12 069:
● When operating the converter in combination with the
ventilator holder, install the converter on the vehicle
bracket. Screw the converter firmly on to the bracket
using the three screws supplied (2 x M3, 1 x M4).
Attach the shorter cable (with angled connector)
leading to the Oxylog 2000 to the white cable holder
with a cable tie.
● Plug the angled connector into the DC input socket of
the Oxylog 2000. Plug the vehicle connector into an
on-board socket.
Connecting the converter to the on-board power supply
without vehicle connector:
The converter on-board cable can be cut to the required
length.
● Connect the on-board cable to the on-board supply as
follows:
white = positive
brown = negative
12 V DC
24 V DC
28 V DC
Preparation
Connecting power supply
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12 V DC
24 V DC
28 V DC