JETI model MAX BEC User manual

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
®
User manual
EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
1. Introduction ..................................................................................... 3 EN
2. Linear voltage regulator ............................................................... 5 EN
2.1 Single BEC .................................................................................. 5 EN
2.1.1 Parameters Single BEC .................................................. 6 EN
2.2. MAX BEC .................................................................................... 6 EN
2.2.1 Parameters MAX BEC ..................................................... 7 EN
2.3 MAX BEC2 .................................................................................. 7 EN
2.3.1 Output voltage setting and LED function ................. 7 EN
2.3.2 Wiring ............................................................................... 8 EN
2.3.3 Switch ............................................................................... 8 EN
2.3.4 Parameters MAX BEC2 ................................................... 9 EN
2.4 MAX BEC 2D plus .................................................................... 10 EN
2.4.1 Output voltage setting and LED function ............... 10 EN
2.4.2 Wiring ............................................................................. 10 EN
2.4.3 Switch - Magnetic switch ............................................ 11 EN
2.4.4 Switch - RC switch ....................................................... 11 EN
2.4.5 Connection of MAX BEC 2D Plus telemetry to the
Duplex receiver .............................................................. 12 EN
2.4.6 Parameters MAX BEC 2D plus .................................... 13 EN
3. Switching regulators ................................................................... 14 EN
3.1 SBEC ......................................................................................... 14 EN
3.1.1 Output voltage setting ............................................... 14 EN
2 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
3.1.2 Wiring ............................................................................ 14 EN
3.1.3 Switch ............................................................................. 14 EN
3.1.4 Heat protection ............................................................ 14 EN
3.1.5 Parameters SBEC .......................................................... 15 EN
3.2 SBEC 30D ................................................................................. 16 EN
3.2.1 Output voltage setting ............................................... 16 EN
3.2.2 Wiring ............................................................................ 16 EN
3.2.3 Switch - Magnetic switch ............................................ 16 EN
3.2.4 Switch - RC switch ........................................................ 17 EN
3.2.5 Heat protection ............................................................ 18 EN
3.2.6 Setup .............................................................................. 18 EN
3.2.6.1 Configuration via JETIBOX ............................ 18 EN
Alternative functions logical input ............... 20 EN
3.2.6.2 Configuration via the DC/DS transmitter .... 21 EN
3.2.7 Parameters SBEC 30D ................................................. 24 EN
4. Warranty ......................................................................................... 25 EN
3 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
1 Introduction English
The MAX BEC / SBEC voltage regulator is designed to
power the on-board system in the model (receiver
and servo power supply), which uses LiXX cells to
power it. The regulator ensures that the power supply
to the servos is constant at all times and the result is
the same speed of movement of the servos,
regardless of the state of discharge of the power cells.
The switched regulator (SBEC) offers the possibility of
connecting the input voltage in a wide range, from 2S
up to 15S Li-XX cells.
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
4 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.1 Single BEC2.1 Single BEC2.1 Single BEC
Single BEC is a linear regulator to provide power for a standard
servo with a maximum input voltage of 6V. The Single BEC can also
be used to provide power for the control units of helicopters or
multicopters.
SingleBEC has a fixed output voltage of 5.5V. It is therefore designed
for servos 4,8 - 6V. The SingleBEC contains an internal, resettable
fuse which protects against short circuit and overload. If a short
circuit or overload occurs, the output voltage decreases to zero
until the short circuit or overload is removed.
Its great advantage is that it allows the use of standard servos in
systems designed for the so-called High-Voltage servos (8,4V). Its
internal filtering improves the quality of the output voltage for the
servo.
The small size and low weight of the SingleBEC allows for very
simple installation in all parts of the plane. Due to its performance
parameters the Single BEC is suitable for the category of micro and
mini servos with load strengths up to 25 kg/cm at 6V.
2 Linear voltage regulator
OUTOUTOUT
INININ
SINGLE BECSINGLE BECSINGLE BEC
wit h Rese t tab l e fus e
SERVO
Accu
5 EN
FIG. 1: Example of Single BEC connection

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.1.1 Parameters Single BEC:
Dimensions : 19x9,3x6,6 mm
Weight : 5 g
Recommended input voltage : 5,5 - 8,4 V
Input voltage max: 24 V
Output voltage : 5,5 V
Sustained current : 1 A
Peak current : 15 A
2.2 MAX BEC2.2 MAX BEC2.2 MAX BEC
MAX BEC can be supplied either by NiXX or LiXX cells,
recommended is 2 LiXX cells or 5-6 NiXX cells. Input voltage is
indicated by four LEDs. If the input voltage is above 7.0 V, all three
green LEDs are ON. While the cells are gradually discharging,
particular LEDs go OFF depending on input voltage (lower then 7 V,
6.7 V, 6.45 V). If the input voltage is under 6.5 V, the red LED goes ON
indicating that cells are discharged (if using 2S LiXX then it means
that voltage of particular cells is under 3.25 V). Output voltage is
extracted from output side with 2 links. It is recommended to
connect both 2-links, it results in higher reliability and lower current
loading on connectors.
Switch
Receivers
ACCU
MAXMAX
BECBEC
MAX
BEC
2 LiXX
5-6 NiXX
IN OUT
10A
+
-
+
-
+
6 EN
FIG. 2: Example of MAX BEC connection

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.2.1 Parameters MAX BEC:
Dimensions : 50x25x10 mm
Weight : 28 g
Recommended input voltage : 5.5 - 8.4 V
Input voltage max. : 16 V
Output voltage : 5.0 V / 5.4 V / 5.7 V / 6.0 V
Peak current (max. 30s): 12 A
Sustained current : 5 A
Input voltage
(number of cell)
Output voltage [V]
5 V
5.4 V
5.7 V
6 V
Sustained current [A]
2 Lixx / 6 NiXX
2.92 A
3.50 A
4.12 A
5.00 A
3 LiXX / 10 NiXX
1.15 A
1.23 A
1.30 A
1.37 A
12 NiXX
0.85 A
0.90 A
0.93 A
0.97 A
2.3 MAX BEC22.3 MAX BEC22.3 MAX BEC2
2.3.1 Output voltage setting and LED function
By means of the provided shorting plugs (jumpers) the requested
output voltage of the regulator can be adjusted in steps of 5.0 V, 5.4
V, 5.7 V and 6.0 V. The MAX BEC 2 supply can consist of LiXX or NiXX
cells. For this purpose we recommend application of 2 LiXX cells or
5-6 NiXX cells. The supply battery voltage is indicated by four LEDs
(1x red and 3x green). In case of a voltage higher than 7.0 V all three
green diodes are ON, during discharge of the cells their voltage will
gradually decrese and the particular LEDs will turn off one by one
according to the input voltage decrease, i. e. when the voltages
become lower than 7 V, 6.7 V and 6.5 V. If the input voltage becomes
lower than 6.5 V the red LED lights up indicating discharged
cells.This shows in case of 2S LiXX batteries that the voltage per cell
decreased below 3.25 V.
7 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.3.2 Wiring
The supply batteries should be connected by cables of a cross
section of at least 1.5 mm to the terminals of the MAX BEC 2 marked
ACCU 1 and 2. The MAX BEC 2 regulator allows connection of two
supply batteries. The LED-diode indicates whether the current is
drawn from battery 1 or from battery 2. The decision about which
battery has to deliver energy depends upon battery voltage, as a
rule the battery with higher voltage is delivering current (if the
voltage of both batteries is equal current is drawn from both of
them and LEDs of batteries 1 and 2 are ON). There exists no energy
exchange between the batteries if the voltages of both batteries
are different, therefore both batteries may be of different
capacities, cell numbers and types. If only one supply battery is
used for the MAX BEC 2, it may be connected either to input ACCU 1
or ACCU 2.
2.3.3 Switch
The regulator MAX BEC 2 contains an electronic switch for
switching it on or off. The switch is a so called „safe“ switch
(REMOVE BEFORE FLIGHT), in case of mechanical damage of
solder joints or cables the BEC-function stays unimpaired.
Notice:
In order to ensure a correct function of the MAX BEC sufficient
cooling air should be directed along the cooling fins.
8 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
OUT 20A
>7.0V
>6.7V
>6.5V
<6.5V
ACCU 1 ACCU 2
®
MAX BEC 2MAX BEC 2MAX BEC 2
VOLTAGE REGULATOR
2 LiXX, 5-6 NiXX
input voltage indicator
ACCU 1ACCU 1ACCU 1
ACCU 2ACCU 2ACCU 2
output voltage
selection
REMOVE BEFORE FLIGHT
LEDindicator for input voltage
Pins for jumper selection of output voltage
Output MPX connector
Electronic switch
LED Accu 1/2
Power input
Accu 1/2
2.3.4 Parameters MAX BEC 2
Dimensions : 100x29x16 mm
Weight : 85 g
Recommended input voltage : 5.5 - 8.4 V
Input voltage max. : 16 V
Output voltage : 5.0 V / 5.4 V
/ 5.7 V / 6.0 V
Peak current (max. 30s): 20 A
Sustained current : 12 A
Input voltage
(number of
cells)
Input voltage [V]
5 V
5.4 V
5.7 V
6 V
Sustained current [A]
2 Lixx / 6 NiXX
8.33 A
10.00 A
11.76 A
12.00 A
3 LiXX / 10 NiXX
3.28 A
3.51 A
3.70 A
3.92 A
12 NiXX
2.44 A
2.56 A
3.70 A
3.92 A
9 EN
FIG. 3: Example of MAX BEC 2 connection

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.4 MAX BEC 2D plus2.4 MAX BEC 2D plus2.4 MAX BEC 2D plus
2.4.1 Output voltage setting and LED function
By means of the provided shorting plug (jumper) the requested
output voltage of the regulator can be adjusted in steps of 5.0 V, 5.4
V, 5.7 V and 6.0 V. Output voltage can be also set by the JETIBOX,
overriding the physical position of the shorting plug (jumper). The
MAX BEC 2D Plus supply can consist of LiXX or NiXX cells. For this
purpose we recommend application of 2 LiXX cells or 5-6 NiXX cells.
The supply battery voltage is indicated by four LEDs (1x red and 3x
green). In case of a voltage higher than 7.0 V all three green diodes
are ON, during discharge of the cells their voltage will gradually
decrese and the particular LEDs will turn off one by one according
to the input voltage decrease, i. e. when the voltages become lower
than 7 V, 6.7 V and 6.5 V. If the input voltage becomes lower than 6.5
V the red LED lights up indicating discharged cells.This shows in
case of 2S LiXX batteries that the voltage per cell decreased below
3.25 V.
2.4.2 Wiring
The supply batteries should be connected by cables of a cross
section of at least 1.5 mm to the terminals of the MAX BEC 2D Plus
marked ACCU A and B. The MAX BEC 2D Plus regulator allows
connection of two supply batteries. The LED-diode indicates
whether the current is drawn from battery A or from battery B. The
decision about which battery has to deliver energy depends upon
battery voltage, as a rule the battery with higher voltage is
delivering current (if the voltage of both batteries is equal current is
drawn from both of them and LEDs of batteries A and B are ON).
There exists no energy exchange between the batteries if the
voltages of both batteries are different, therefore both batteries
may be of different capacities, cell numbers and types. If only one
supply battery is used for the MAX BEC 2D Plus, it may be connected
either to input ACCU A or ACCU B.
10 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
2.4.3 Switch - Magnetic switch
The magnetic switch is designed to turn the MAX BEC 2D Plus on or
off and is connected to it by a three-wire cable with a connector. To
switch on the MAX BEC 2D Plus, it is necessary to place the supplied
magnet in the carrier on the target so that the key of the carrier and
the key on the magnetic switch are the same orientation. The
magnetic switch has a green LED indicating "on".
Green LED “on” - If the green LED is blinking, this indicates that the
magnetic key is present, but the unit is not switched on yet.
- If the green LED is continuously active, this indicates that the
MAXBEC2D PLUS is active and ready to power your receiver and
servos.
Safety Precautions for the Manipulation of Magnets:
Since the MAXBEC 2D Plus contains magnetic components, it is
necessary to follow some simple rules for the handling of
magnets. The magnet is contained within a special holder
made of aluminium.
1. Keep the magnet a safe distance from all devices that could
be damaged by magnetic interference: Televisions, Credit
Cards, PC's and Pacemakers!
2. Keep magnets away from children, due to the risk of
ingestion or injury!
11 EN
FIG. 4: Description of the magnetic switch and key
Key
Target
Led ON

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
Notice:
1. Always follow the same procedure when switching on/off. To
switch-on, first connect the batteries and then use the
magnetic or RC switch to activate the unit. To switch-off, always
use the magnetic or RC switch to turn-off the unit before
disconnecting the batteries.
2. In order to ensure a proper function of the regulator always
take care of an sufficient amount of cooling air throughflow.
2.4.4 Switch - RC switch
MAX BEC 2D PLUS supports on/off via RC Switch. It can be easily
used in JETI DC/DS transmitters.
1. Disconnect the connector with a lock on the three-wire cable and
separate the magnetic switch.
2. Connect MAX BEC 2D Plus with RC Switch (conrol output) using
three-wire cable.
3. Bind the RC Switch with your transmitter and configure it in main
„menu/model/device explorer/RC switch”.
12 EN
2.4.5 Connection of MAX BEC 2D Plus telemetry to the
Duplex receiver
Connect the three-wire cable (red JR connector) of the MAX BEC 2D
Plus to the Ext. input of the Duplex receiver. For Rx receivers,
please set the Ext. input as JETIBOX/Sensor. At newer REX receivers
the Ext. input will be set automatically.
Telemetry of the MAX BEC 2D Plus:
MAX BEC 2D Plus sends the following values to the JETI DC/DS
transmitter via the DUPLEX system:
Acc. Input Volt – Shows the actual voltage of the power-supply
batteries A and B.
Temperature – Shows the temperature of the MAX BEC 2D Plus.
Output voltage – Shows the actual voltage on the output

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
Magnetic switch RC Switch
Full
Med.
Low
Warn.
ACCU A ACCU B
MAX BEC MAX BEC MAX BEC
input voltage indicator Input Voltage: 5 . 5 – 8 . 4 V
ACCU A
ACCU B
output voltageoutput voltage
selectionselection
output voltage
selection
OUT 20A
D
22D D 2D EXEXEX
V O L T A G E
REGULATOR
Ext. ON/OFF
6.0 V
5.7 V 5.4 V 5.0 V
PlusPlusPlus
LEDindicator for input voltage
Pins for jumper selection of output voltage
Output MPX connector
LED Accu A/B
Power input
Accu A/B
13 EN
2.3.4 Parameters MAX BEC 2D plus
Dimensions : 100x29x16 mm
Weight : 85 g
Recommended input voltage : 5.5 - 8.4 V
Input voltage max. : 16 V
Output voltage : 5.0 V / 5.4 V
/ 5.7 V / 6.0 V
Peak current (max. 30s): 20 A
Sustained current : 12 A
Input voltage
(number of
cells)
Input voltage [V]
5 V
5.4 V
5.7 V
6 V
Sustained current [A]
2 Lixx / 6 NiXX
8.33 A
10.00 A
11.76 A
12.00 A
3 LiXX / 10 NiXX
3.28 A
3.51 A
3.70 A
3.92 A
12 NiXX
2.44 A
2.56 A
3.70 A
3.92 A
FIG. 5: Example of MAX BEC 2D plus connection

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
3.1 SBEC3.1 SBEC3.1 SBEC
3.1.1 Output voltage setting
The output voltage is adjusted with the aid of a shorting plug
(jumper) in steps of 5.0V, 5.5V, 6.0V, 7.0V and 8.0V. An important
condition of keeping a correct output voltage in connection with
the jumper position is a sufficiently high supply voltage. The supply
voltage of the battery must by all means be higher than the
required output voltage. We recommend a minimum difference of
at least 2V above the output voltage. Otherways the output voltage
would decrease under load conditions. The switched-on condition
of the regulator and an information about the presence of voltage
at its output are signalled by a shining green LED.
3 Switching regulators
3.1.2 Wiring
The switching voltage regulator SBEC comprises two battery input
cables with cross-sections of 1mm2 as well as two pairs of output
servo cables with cross-sections of 0.5mm2 each. These output
cables are equipped with JR-plugs.
3.1.3 Switch
SBEC has mechanical switch for switching the regulator on. This
switch is wired in a so called „safety“ mode which ensures
continuous function of the regulator even if soldering joints or
cables become mechanically damaged.
3.1.4 Heat protection
The SBEC contains a heat protection means which prohibits
destruction of the regulator by long time effects of excessive
current or by a short circuit. This phenomena may, for instance,
arise if a servo is short circuited or by an excessive output load. If the
heat protection is activated, the regulator „switches off“ for a short
time necessary to cool down. After cooling down the SBEC switches
automatically on again. This affair is signalled by blinking of the
green LED. The blinking frequency of the LED depends on the
14 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
amount of applied load. When the heat protection is activated the
output voltage decreases to several hundreds of mV.
Switch
Receiver
ACCU
+
-
+
-
+
Notice:
In order to ensure a proper function of the regulator always
take care of an sufficient amount of cooling air throughflow.
Number of Lixx Cells
2
3
4
5
6
7
8
9
10
Sustained current*
[A]
6.2
5.7
5.4
5.1
4.7
4.5
4.1
3.8
3.5
* Sustained current values are valid only for operating conditions
with sufficient cooling airflow
3.1.5 Parameters SBEC:
Dimensions : 60x28x10 mm
Weight : 29 g
Recommended input voltage : 6 - 42 V
Input voltage max.: 50 V
Output voltage: 5.0 V / 5.5 V / 6.0 V / 7.0 V / 8.0 V
Sustained current : 6.2 A (with supply 2S LiXX) see tab.
Peak current : 12 A (max. 5s)
®
OUTPUT VOLTAGE SE LEC TIO N [ V]
5.0
5.5
6.0
7.0
8.0
SBECSBECSBEC
SWITCHING VOLTAGE
REGULATOR
ON
INPUT OUTPUT 12A
6 - 42V
I N P U T
VOLTAGE
ON/OFF
15 EN
Fig. 6: Example of SBEC connection

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
3.2 SBEC 30D3.2 SBEC 30D3.2 SBEC 30D
3.2.1 Output voltage setting
Setup of the output voltage between 5 and 8.4V is accomplished in
the JETI transmitter via EX BUS or in the JETIBOX (see chapter
"Settings"). The input supply voltage from the batteries must
always be higher than the desired output voltage. We recommend
that the power supply is at least of 2V higher. Otherwise, the output
voltage may decline during the load. The switch on state of the
regulator is signaled by the green LED.
3.2.2 Wiring
The voltage regulator SBEC 30D comprises two battery input
cables with cross-sections of 2.5mm2 used to connect the battery,
and two three-wire cables with JR connector, where the red
connector is the main EXT and the black connector is used for
connecting the external switch (such as Universal Magnetic Switch
or RC Switch). On the output there are two cables with cross-
sections of 2.5mm2, which are connected to the receiver via MPX
connector. In addition SBEC 30D has two EXT connectors that may
serve as an expander for other sensors or logical inputs. To connect
the sensor to the EXT 1 or EXT 2, the particular output must be
configured as Expander.
3.2.3 Switch - Magnetic switch
The magnetic switch is designed to turn the SBEC 30D on or off and
is connected to it by a three-wire cable with a connector. To switch
on the SBEC 30D, it is necessary to place the supplied magnet in the
carrier on the target so that the key of the carrier and the key on the
magnetic switch are the same orientation. The magnetic switch has
a green LED indicating "on".
Green LED “on” - If the green LED is blinking, this indicates that the
magnetic key is present, but the unit is not switched on yet.
- If the green LED is continuously active, this indicates that the SBEC
30D is active and ready to power your receiver and servos.
16 EN

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
3.2.4 Switch - RC switch
SBEC 30D supports on/off via RC Switch. It can be easily used in JETI
DC/DS transmitters.
1. Disconnect the connector with a lock on the three-wire cable and
separate the magnetic switch.
2. Connect SBEC 30D with RC Switch (conrol output) using three-
wire cable.
3. Bind the RC Switch with your transmitter and configure it in main
„menu/model/device explorer/RC switch”.
17 EN
FIG. 7: Description of the magnetic switch and key
Key
Target
Led ON
Safety Precautions for the Manipulation of Magnets:
Since the MAXBEC 2D Plus contains magnetic components, it is
necessary to follow some simple rules for the handling of
magnets. The magnet is contained within a special holder
made of aluminium.
1. Keep the magnet a safe distance from all devices that could
be damaged by magnetic interference: Televisions, Credit
Cards, PC's and Pacemakers!
2. Keep magnets away from children, due to the risk of
ingestion or injury!
Notice:
1. Always follow the same procedure when switching on/off. To
switch-on, first connect the batteries and then use the

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
3.2.5 Heat protection
The switching voltage regulator SBEC 30D contains a heat
protection means which prohibits destruction of the regulator by
long time effects of excessive current or by a short circuit. This
phenomena may, for instance, arise if a servo is short circuited or by
an excessive output load. If the heat protection is activated, the
regulator „switches off“ for a short time necessary to cool down.
After cooling down the SBEC 30D switches automatically on again.
3.2.6 Setup
The condition of correct voltage is sufficient supply. The input
supply voltage from the batteries must always be higher than the
desired output voltage. We recommend that the power supply is at
least of 2V higher. Otherwise, the output voltage may decline
during the load. The switch on state of the regulator is signaled by
the green LED.
Notice:
1. Always make sure that all the connected devices, such as
receivers, sensors and especially servos have the range of
permitted input voltage in the value of input voltage set by you.
2. Always adjust the output voltage when the devices are
disconnected.
18 EN
magnetic or RC switch to activate the unit. To switch-off, always
use the magnetic or RC switch to turn-off the unit before
disconnecting the batteries.
2. In order to ensure a proper function of the regulator always
take care of an sufficient amount of cooling air throughflow.
3.2.6.1 Configuration via JETIBOX
After connecting the SBEC 30D to the JETIBOX, a startup screen
appears that contains identification of the device and the value of
consumed capacity of the battery in the first line of the JETIBOX
display. The second line contains the data (from the left) of the input

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
19 EN
voltage (e.g. battery voltage) and the value of output voltage.
Using buttons U and D (down and up arrows) of the JETIBOX it is
possible to browse through the menu (direction to the main
screen).
By pushing the R button (right arrow) and L button (left arrow) it is
possible to set individual items. The menu will then show these
settings:
The items of „ACTUAL VALUES“:
Accu Voltage – actual input voltage value, battery voltage
Accu Current – actual current flowing from the battery
Accu Capacity – actual value of consumed capacity from the
battery, resetting is performed via "MIN / MAX" section
Output Voltage – actual value of BEC´s output voltage
Temperature – actual temperature value (in °C)
The items of „MIN/MAX“:
Reset MIN/MAX – by pushing the arrows R and L (left and right)
together, the minimum and maximum are reset, as well as the data
of consumed capacity
AccuV MIN/MAX – data of the minimum and maximum voltages,
i.e. battery voltage
AccuI MAX – indicates the maximum current from the battery
Temp. MIN/MAX – data of the minimum and maximum
temperature of SBEC 30D
The items of „SETTING“:
Output Voltage– setting the output voltage of the BEC
Ext1 Mode and Ext2 Mode – setting the EXT1 output according to
the requirements as:
Expander – expander EX BUS, possibility to connect devices that
support EX Bus Protocol
Log. Input – reading the logical input, see the chapter „Alternative
functions – logical input“
Off – switched off, EXT1 output is not used

EN
MAX BEC / SBECMAX BEC / SBECMAX BEC / SBEC
Alternative functions logical input
Using a pin as the input is useful because of simple feedback,
without the use of telemetry sensors. If you install, for example,
limit switches on a retractable undercarriage, you can have
feedback about its condition during operation. The condition of
digital inputs is transmitted via EX telemetry and sounds or alarms
can be assigned to the events.
- This way the pin is configured as the input and its condition
(disconnected, connected to the ground) is transmitted to the
transmitter as other telemetry values from the sensors.
- Only keep the pin disconnected or connected to the common
ground of the SBEC 30D.
1
Contact, end-switch
+
Typ.
40kW
FIG. 8 Example of logic input connection
20 EN
To switch between items, press left or right arrow for a longer period.
Capacity Alarm – setting the level of capacity taken from the
battery at which the alarm will sound
Current Alarm – setting the level of current drawn from the battery
at which the alarm wil sound
MinVoltage Alarm – if the battery voltage drops below the set level,
the alarm will sound
OverTemp Alarm – indicates alarm fort the SBEC30D overheating
The items of „SERVICE“:
Factory Defaults – pushing arrows L and R (left and right) together
leads to loading the default settings of the SBEC 30D
SBEC30D v. xx.xx ID xxxxx:xxxxx – designation of the product with
the firmware version and the serial number (ID).