Flybox Oblo backup system 2.0 User manual

Oblò backup system 2.0
Revision#1.0, 07/11/2018
Flybox
®

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MECHANICAL INSTALLATION
SECTIONS
ELECTRICAL INSTALLATION
OPERATING INSTRUCTIONS
TECHNICAL SPECIFICATIONS

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
Introduction
Thank you for purchasing a Flybox® product. We hope
it fully satisfy you.
SYMBOLS USED IN THE MANUAL
NOTE: Used to highlight important informations.
CAUTION: Used to warn the user and indicate a potentially
hazardous situation or improper use of the product.
WARNING: Used to indicate a dangerous situation that can
cause personal injury or death if the instruction is
disregarded.

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
Important notices & warnings
NOTE: Keep this manual in the aircraft.This document
must accompany the device in the event of change of
ownership.
NOTE: This device is intended for installation onto non
type certified aircraft only, because it has no aviation
certifications. Refer to your local aviation authorities to
check if this device may be installed in your aircraft.
CAUTION: Read entirely this manual before installing
this device in your aircraft, and follow the installation and
operating instructions described here.
CAUTION: When the installation is finished you must
do a test, prior to flight, switching on all the possible
source of electric noise and checking the properly
operation of this device.
WARNING: Responsibility for installation lies entirely
with the installer. Responsibility for operations lies
entirely with the operator.
IMPORTANT: If you do not agree with the notices above
do not install the device in your aircraft, but return the
product for a refund.
Microel s.r.l. reserves the right to change or improve its
products. Information in this document is subject to changes
without notice.

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
Index
INDEX
SECTION 1 - Mechanical installation
1.1 - Mechanical installation ……………….………………….. 7
1.2 - Installation notices ……..………………………………… 8
SECTION 2 - Electrical installation
2.1 - Electrical installation ………..……..………………….…. 9
Ferrite mounting …………....……..………………….…. 10
SECTION 3 - Operating instructions
3.1 - Description and use of the device ….….…………………. 12
3.2 - Normal operating procedure ……………………………… 15
3.3 - Endurance testing ……………………..…..……………… 16
3.4 - Warning led notifications …..….…………………….…… 17
SECTION 4 - Technical specifications ……..…….……………. 18
Warranty …….…………………………………….…………… 19

Oblò backup system 2.0 - User’s manual
FLYBOX
7
Rev. 1.0
®
Mechanical installation
SECTION 1
1.1 MECHANICAL INSTALLATION
The aluminum enclosure can be fixed using the two
holes on the flanges.
Dimensions in millimeters

FLYBOX
Oblò backup system 2.0 - User’s manual
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Rev. 1.0
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Installation notices
1.2 INSTALLATION NOTICES
●This device contains a Ni-Mh battery pack, with
operating temperature range 0~45°C. Outside of
these limits the battery is not charged, so you
need to install it away from heat sources (for example
heater vents). If possible choose an area where there
is some air circulation.
●Select an area that is accessibile, to allow for future
battery servicing.

Oblò backup system 2.0 - User’s manual
FLYBOX
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Rev. 1.0
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Electrical installation
SECTION 2
2.1 ELECTRICAL INSTALLATION
Below is the wiring connection for the 6 pin Molex
minifit-jr connector of the device.
Included in the kit there are the corresponding socket
connector and the crimp terminals.
Socket connector,
view from wire
insertion side
(Or other instrument)
NOTE: Warning led must always be installed.

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
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Electrical installation
NOTE:
- This device was designed to drive one or two Oblò
instrument. If you connect other instruments note that
the output current limit is 0.45 Amps.
- The power supply can be taken either from a line that
remains energized during engine start (ie master bus)
or from a line that remains off during engine start.
- The power-on switch on pin#3 is necessary to turn off
the Oblò or other connected instruments, because from
pin#3-6 is always present the voltage of the internal
battery.
- Complete the wiring harness and connector installation
prior to attaching the connecctor to the device. This is
essential to ensure the wires do not inadvertently short
together during installation (remember that the internal
battery of the device is ready to deliver output power
even when the aircraft electrical system is in the off
state).
- The warning led on pin#5 is used for eventual error
indications (ie battery fault, temperature outside
operating range...).
- Insert a 2 amp circuit breaker to the +12V power lead
(pin#1).
CAUTION: Voltage peaks on the supply line that
exceeds the operating limits (20V) can damage the
device.

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
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Description and use of the device
3.1 DESCRIPTION AND USE OF THE DEVICE
SECTION 3
The Backup System for Oblò is an electronic device that
contains a Ni-Mh battery pack and an electronic system
that manage the battery charging. It is designed to drive
one or two Oblò instrument (or other instruments with
maximum load current of 0.45 Amps) even in the
absence of main power supply, or during engine start.
Connects directly to the power bus of the aircraft and
provides at its output the supply voltage for connected
instruments and simultaneously charge the internal
battery pack.
Charging system:
The device continuously monitors the state of the
internal battery and recharges it as necessary when the
aircraft electric system is turned on.
The maximum input current for battery recharging is 1.5
Amps. If the internal battery is fully discharged it may
require up to four hours of recharge time.
NOTE: This device contains a Ni-Mh battery pack, with
operating temperature range 0~45°C. Outside of these
limits the battery is not charged.

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
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Description and use of the device
Ground based recharging:
To accomplish ground based charging, turn on the
aircraft master switch and keep turned on for 3-4 hours,
to allow the backup system to be charged. Leave all
other aircraft loads in their off state. After 3-4 hours the
internal battery is fully charged, turn off the master
switch. It may be necessary at this point to charge also
the main aircraft battery (with an appropriate charger),
as it was used to charge tha backup system.
Battery capacity and duration:
The backup system contains one battery pack with
nominal capacity of 2 amp-hours. Battery capacity
depends on many factors: actual state of charge, age
of the battery pack, number of charge/discharge made,
ambient temperature.
With battery in good condition and fully charged, the
following average performance can be expected in
terms of operating duration:
Current draw by
the load Duration
0,26 A (1 Oblò) 6 hours
0,45 A 3 hours

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
13
Description and use of the device
To avoid damage to the battery pack you must avoid to
fully discharge it (the battery voltage should never drop
below 9.5 Volt).
If you have connected one Oblò instrument, it will turn
off when voltage drop below 10V, or you will notice
continuous turn-off/turn-on. In this condition is essential
to turn the instrument off, to avoid further discharging
of the battery, and proceed with a charge as soon as
possible.
Storage beyond 3 months:
If you are not using the aircraft, or if you leave
disconnected the backup system, be sure to make a full
charge as explained in the paragraph “Ground based
recharging”, at least once every 3 months. This is
necessary because Ni-Mh batteries discharge, after
long periods of time, even when not in use.

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
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Normal operating procedures
For normal operation the following is the recommended
operating procedures:
Start-up procedure:
●Prior to turning on the aircraft master switch, turn on
any equipment that derives power from the backup
system. In this way you can check the correct
operating of the backup system and you can check
that the internal battery is not fully discharged.
●Turn on the aircraft master switch and ensure that
equipments connected to the backup system
remains energized.
●Continue with the normal start-up operating
procedures.
Shut-down procedure:
●Shut down aircraft engine using normal procedures.
●Shut down the aircraft master switch and verify that
equipments connected to the backup system
remains energized.
●Turn off the equipments connected to the backup
system.
3.2 NORMAL OPERATING PROCEDURES

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
15
Endurance testing
3.3 ENDURANCE TESTING
At least once a year perform this test to check the
endurance capability of the backup system:
1. Shut down the aircraft master switch.
2. Turn on the equipment connected to the backup
system.
3. If the equipment connected is an Oblò:
● Measure the time until the Oblò turn off, or it
begin continuous turn-off/turn-on.
If the equipment connected is not an Oblò:
●Measure the time until the equipment no longer
functions or the time until the output voltage of the
backup system drops to 9.5 Volt. Avoid voltage to
fall below 9.5 Volt, to not damage the battery pack.
4. At the end of the test fully charge the battery by
performing the procedure explained in chap.4,
paragraph “Ground based recharging”.
If the measured duration no longer meets your
endurance testing requirement, the internal battery of
the backup system must be replaced.

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
16
Warning led notifications
The warning led is used to indicate any faults in the
system or in the internal battery pack. When power
supply is applied to the backup system, the led lights up
for 3 seconds to confirm correct operation.
The possible notifications are:
●2 flashes followed by a pause: internal battery faults
(contact Microel srl to order a new battery pack).
●3 flashes followed by a pause: excessive charge
time; it means that the battery pack no longer holds
a full charge, so you need to replace it (contact
Microel srl to order a new battery pack).
●4 flashes followed by a pause: battery temperature
outside the operating limits (0~45 °C); in this case
the charging system will inhibit the charge of the
battery until the temperature falls within the operating
limits (above 0° or below 45° C).
●5 flashes followed by a pause: internal battery
temperature sensor fault (contact Microel srl to order
a new battery pack).
●6 flashes followed by a pause: internal battery faults
(contact Microel srl to order a new battery pack).
3.4 WARNING LED NOTIFICATIONS

FLYBOX
Oblò backup system 2.0 - User’s manual
Rev. 1.0
®
17
Technical specifications
- Dimensions: 105.0 x 57.2 x H43 mm.
- Electrical connections using 6-poles Molex minifit-jr
connector (included).
- Operating temperature range: -10 ~ +60 °C.
- Charge operating temperature of the internal battery
pack: 0 ~ 45 °C.
- Supply voltage: 10 ~ 16 V.
- Max continuous input current: 1 A.
- Max continuous output current: 0.45 A.
- Output voltage: 10 ~ 12 V during backup operation
- Batteries: Internal Ni-Mh battery pack.
- Weight: 220 g.
4.1 TECHNICAL SPECIFICATIONS
SECTION 4

Oblò backup system 2.0 - User’s manual
FLYBOX
Rev. 1.0
®
18
Date Revision Description
11/2018 1.0 First release
WARRANTY:
This product is warranted to be free from defects for a
period of 12 months from the user invoice date.
The warranty only covers manufacturer defects; and
shall not apply to a product that has been improperly
installed, misused or incorrect maintenance, repaired or
altered by non-qualified person.
WARNING: All photos, data, drawings, instruments layouts, technical solutions and
data representation you find in this document or watching at FLYBOX® instruments
working and/or you can access by means of any other media, including web sites,
are sole property of MICROEL s.r.l., cannot be copied or imitate without a written
permission of MICROEL s.r.l. itself and are protected by law, even by means of
extended international copyright and/or specific patents deposited. Any infringement
of this statement and of MICROEL s.r.l. intellectual property will be prosecuted.
©2018 Microel s.r.l. – all rights reserved.

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MICROEL s.r.l.
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27038 Robbio (PV) - ITALY
Tel [phone] - Fax [phone]
www.flyboxavionics.it