miniMAC - alewings

miniMAC - alewings
mini
MAC
Cod. 90010407
Thank you for your choice of Alewings products.
Electronic power supply
USAGE MANUAL
Alewings
Dear Customer,
V1.4
®
di Alessandro Torri
v. del Lavoro, 41 20084 Lacchiarella MI ITALY
www.alewings.it info@alewings.it
The miniMac is a power supply system able to manage two
batteries; it accepts 6 channels incoming from the receiver and
controls up to 9 servos coming out.
It is equipped with a voltage regulator programmable at any
voltage included between 5 and 7,4V up to 30A (peak). It includes
circuits for signal amplification and filtering.
Moreover the miniMAC includes double electronic switches, double
battery voltage indicators and a protection against short circuit for
each servo. (See the note about fuses)
WARNING
CAREFULLY READ BEFORE USE
- Use only Li.Poli 7,4V batteries
- Don’t invert batteries polarity
- Pay attention to polarity of the connecting leads both on receiver and on box side
- To invert polarity of leads to the receiver may damage the receiver and/or the device itself.
- To invert polarity at servos outputs may damage servos and/or the device itself.
- Before connecting servos to the device, make sure you set the voltage output of miniMac at a value lower than or same as the
maximum voltage allowed for your servos
NOTE: Each servo output is protected against short circuits and overcurrent by a not self-resetting fuse.
- If too much current is flowing (for example because of the total blocking of a servo) or a short circuit occurs, tha fuse of the output
burns.
- If the box is unused for more than one week, disconnect both batteries.
NOT SELF - RESETTINGFUSES
EACH SERVO OUTPUT IS PROTECTED BY A NOT SELF-RESETTING FUSE
Nature of fuses is to act as protection; in the case of a short circuit and/or overcurrent:
- the self-resetting fuse opens (it temporarily cuts the supplying to the servo) and, when cooled, closes again.
- the not self-resetting fuse burns (it cuts permanently the supplying to the servo).
ATTENTION: A FUSES BURNS ONLY IF SHORT CIRCUIT OR OVERCURRENT OCCUR.
A system protected by not self-resetting fuses has the advantage that, if the fuses burns, this unequivocally means that a particularly
high current flow occured.
This is a clear evidence that there is something anomalous, such as:
- a defective servo
- a servo warking too hard because of a wrong positioning of the servo harm or a wrong setting of the control rod
- an extension cable with not well insulated leads
- a connector with not well insulated contacts
The self-resetting fuse, after a short time, closes again, thus restoring a critical situation
The not self-resetting fuse permanently escludes the critical situation, allowing a precise and immediate detection of the problem
NOTE: each fuse is tested by a continuous current flow widely higher than the normal absorbtion of a servo
CONNECTIONS
Connection miniMAC - Receiver
Mini Mac manages 6 channels from receiver; connect the channels you want to put into the box to the inputs on miniMac referred to as
“RX INPUT”. Use the 6 exetension leads provided, paying maximum attention to polarity both on the receiver side and on the box side.
Note: it is absolutely not necessary that channel number 1 on the receiver corresponds to channel 1 on the box and so on...
Connection miniMAC - Servos
MiniMac manages in output up to 9 servos, distributed over 6 channels . After assigning the function corresponding to each channel in
input, connect their respective servos to outputs referred to as “SERVO OUTPUT”.
Pay maximum attention to connectors polarity ( see figure 1)
Below som example of assignment of channels:
Assignment of miniMac channels on maxi aerobatic plane:
Channel Function
2A/B
6
1A/B
2A/B
3A/B
4
5
6
5
1A/B
4
AIL left with two servos
AIL right with two servos
RUD with two servos
ELE left with one servo
ELE right with one servo
THR with one servo
3A/B
Assignment of miniMac channels on turbine jet:
Channel Function
1A
1B
2A
2B
3A
3B
3B
4
5
5
6
6
1B
4
2B
2A
AIL left
AIL right
FLP left
FLP right
ELE left
ELE right
GEAR
RUDDER
Gear RUDDER
Connect directly into receiver the turbine
throttle and other possible channels.
3A
1A
Assignment of miniMac channels on glider:
1A
Channel
3A
2A
4
5
6
2B
3B
Function
1A
AIL SX
1B
AIL DX
2A
FLP SX
2B
FLP DX
3A
AIR BRAKE SX
3B
AIR BRAKE DX
4
ELE
5
RUDDER
6
SGANCIO
Connect directly into receiver the throttle and
other secondary functions.
1B
NOTE:examples showed here are non-binding and don’t cover all possible installations.
PICTURE 1
CONNECTIONS
1A/B 2A/B 3A/B 4
5
6
Connection between miniMAC and servos:
Please connect the servos to the outputs called “Servo output”.
Make sure to respect the right polarity.
Connection between miniMAC and receiver:
Use the 6 leads provided and connect the receiver channels to the
miniMAC.
PLEASE NOTE: it is not necessary that the channel 1 on the receiver
corresponds to the channel 1 on the miniMAC. Pay attention to the lead
polarity both on the receiver side and on the box side.
Batteries connection:
Connect batteries with sockets MPX to inputs called “BAT1” and
“BAT2” on the miniMAC.
Connection miniMAC - External panel:
Connect the flat cable to the corresponding connector on the external panel.
Later you will have to disconnect again in order to fix the panel on the external side of the fuselage or on the receiver board.
PAY ATTENTION TO POLARITY, THE CONNECTOR SHAPE ALLOWS CONNECTION WITHOUT EFFORT.
IMPORTANT:
Before connecting batteries, make sure you have selected, at least approximatively, the right miniMac output voltage for your
receiver and servos.
SEE THE FOLLOWING PARAGRAPH.
PICTURE 2
PROGRAMMING
THE OUTPUT VOLTAGE
7.0V
7.4V
6.2V
5.5V
5V
With a little screwdriver move the trimmer on the back side of the device to the position corresponding to the desired voltage.
If you want to set a voltage between two of the values indicated or approximated to a thenth of Volt, the use of a voltmeter is
recommended. Position the tips of the voltmeter on the positive and negative poles of the servo output (you can use an extension lead for
an easier operation): moving the trimmer you can program the voltage with maximum precision.
ATTENTION: YOU MUST PROGRAM THE CORRECT OUTPUT VOLTAGE BEFORE CONNECTING THE POWER UNIT TO ANY OTHER DEVICE
STARTING FOR THE FIRST TIME
Before using the MiniMAC please be sure you have correctly connected the box as shown into the paragraph “Connection” and you have
chosen the right output voltage for your servos and receiver.
IMPORTANT:
- When you connect the first battery, the device turns automatically on
- Make sure that servos are disconnected from corresponding moving part; the servo blocking at end point may damage the box, the
servo and the moving part.
- Make sure to connect the batteries respecting polarity and to use only LiPo 7,4V batteries.
When you connect a battery, the device automatically turns on and the LEDs light up solid blue.
NOTE: the device detects power supply interruptions; for this reason it goes automatically in alarm status when turned on (as if a power failure
occured) wit LEDS steady on. See the paragraph “ Batteries status” for description of flashes sequences.
So, after connecting both batteries, you have to turn the device off and on again (as shown below) to reset the alarm.
TURNING OFF AND ON:
When the device is on, press the button and keep it pressed for at least 2 seconds to turning it off. The LEDs on the external panel will turn into
solid blue and after 2 seconds they will turn off. When you release the button the device is off.
When the device is off, press the button and keep it pressed for at least 2 seconds to turning it on. The LEDs emit 2 sequences of 3 rapid flashes:
now the device is ready to use. The LEDs will start flashing at different frequency depending on the state of the two batteries (see the "Batteries
state" paragraph).
BATTERIES STATUS
Two seconds after you turn it on, the device starts to check the status of the two connected batteries.
The LEDs emit different sequences of flashes indicating the voltage of the batteries.
More the flashes are rapid and less the batteries have residual power.
ATTENTION: If the LEDs are solid blue, the device has entered the ALARM status (low or disconnetted batteries). Recharge batteries or
check connections.
LEDs FLASHES:
- 1 flash every 3,5 seconds:
- 1 flash every second:
- 1 flash every 0,5 seconds:
- light solid:
Button
LEDs
>7,5V
>7,2V
>7,0V
<7,0V and/or loss of power supply
To reset the alarm please turn the device off and on again.
If the alarm continues, check the connections and the batteries voltage.
BATT 1
BATT 2
ATTENTION: the LEDs flashes don't correspond to the instantaneous voltage of the batteries but to the minimum voltage detected
since you turned the device on.
PICTURE 3
FINE ADJUSTMENT OF OUTPUT VOLTAGE:
If you want to set a voltage between two of the values indicated or approximated to a thenth of Volt, you have to use a voltmeter to read
voltage during the setting.
Position the tips of the voltmeter on the positive and negative poles of one servo output.
Pay attention not to cause short circuits:an accidental contacts between poles may burn the fuse.
you can use an extension lead for an easier reading of voltage as shown into the following figure.
-+
S
FIXING
Preparing the device for fixing:
Take the small bag containing 4 black rubber dampers, 4 small brass tubes and 4 self-threading screws.
Insert the four rubber dampers provided into apposite seats at the base of the device.
Insert the four brass small tubes into holes in dampers so that they exit just a little both above and below.
Prepare the four self-threading screws provided that you will use for fixing the device.
1
2
3
OK
Preparing the mounting surface (hereinafter called rx plate):
-Case 1: fixing the device directly to rx plate: position the device into desired place and drill for holes for screws. Create into rx plate some
openings in correspondence with heat sinks and air intakes of the device, so that air can pass and cool it. With device into mounting
position, insert the four screws and tight them until they touch the brass small tubes.
Don't tight too much, don't press dampers.
-Case 2: fixing the device with spacers: position the device into desired place and create four spacers at least 10mm thick in
correspondence with fixing holes. Drill four holes for screws; with device into mounting position, insert the four screws and tight them
until they touch the brass small tube.
Don't tight too much, don't press dampers.
Fixing the external panel:
Using the shape provided as a guide, create the opening and the fixing holes for the external panel into the fuselage or the rx plate.
Fix it using the self-threading screws provided.
WARNING
This is not a toy.
Pay close attention to the following points, as the non
observance of them can destroy the product, nullify your
warranty and lead to property damages or personal severe
injuries!
- Never leave the product unattended while it is switched on, in
use or connected with a power supply. If a defect occurs, it
could set fire to the product or to the surroundings.
- Avoid incorrect connections or connections with reversed
polarity.
- All wires and connections have to be well insulated. Shortcircuits might destroy the product.
- Never allow this product or other electronic components to
come into contact with water, oil, fuels or other conductor liquids,
as these could contain minerals, which are harmful for electronic
circuits. If this happens, stop the use of your product immediately
and let it dry carefully.
- Always wire up all the parts of the equipment carefully. If any of
the connections loosens, due to vibrations, you might damage
your device.
- Never cut off or modify the original plugs
- Never change the polarity of the receiver connectors
- Do not open the product and never solder on the PCB
SPECIFICATIONS
Dimensions:
80x61x23mm
45x15mm External panel
Weight:
70gr without cables
Operating Voltage:
from 6,0V to 8,4V
Batteries:
Two 7,4V LiPoli batteries
Output Voltage:
Stabilized Voltage
Programmable between 5V
and 7,4V
Maximun current:
20A continuous - 30A peak
Maximum current for each output: 3A continuous with protection
against short circuits
Maximun current drain:
about 100mA when the leds
are ON
Current drain when device is OFF: about 150uA instantaneous
(100mA after a month unused)
Warking temperature:
-10° up to +60°C
These specifications may be changed without advance notice.
WASTE DISPOSAL
At the end of its life cycle this product is subject to special
waste disposal and it cannot be disposed with urban
waste
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising