INSTRUCTION MANUAL
VOLTAGE REGULATOR
MAXBEC2D EX
Released by JETI model s.r.o 8.2.2010
INSTRUCTION MANUAL
CONTENT
1. INTRODUCTION ...................................................................................................................................... 3
2. DESCRIPTION .......................................................................................................................................... 4
2.1 MAXBEC2D ......................................................................................................................................................... 4
2.2 MAGNETIC SWITCH ................................................................................................................................................ 4
3. CIRCUITS .................................................................................................................................................. 5
3.1 POWERING THE MAXBEC2D ............................................................................................................................... 5
3.2 COMMUNICATION WITH THE MAXBEC2D ........................................................................................................... 5
3.2.1 Connecting MAXBEC2D to the JETIBOX ..................................................................................................... 5
3.2.2 Connecting the MAXBEC2D to a DUPLEX receiver..................................................................................... 6
3.2.3 Connecting MAXBEC2D to a DUPLEX Expander ........................................................................................ 6
4. MENU NAVIGATION .............................................................................................................................. 7
4.1 ACTUAL VALUE ................................................................................................................................................ 7
4.2 MIN / MAX – MINIMUM AND MAXIMUM VALUES ............................................................................................... 7
4.3 SETTING - CONFIGURATION OPTIONS ................................................................................................................. 7
4.4 ALARMS .............................................................................................................................................................. 8
4.5 SERVICE .............................................................................................................................................................. 8
5. OUTPUT VOLTAGE ADJUSTMENT ................................................................................................... 9
6. POWERING ON ........................................................................................................................................ 9
7. INSTALLATION ..................................................................................................................................... 10
8. FIRMWARE UPDATE ........................................................................................................................... 10
9. SAFETY PRECAUTIONS FOR THE MANIPULATION OF MAGNETS ...................................... 10
10. TECHNICAL SPECIFICATION OF THE MAXBEC2D ................................................................. 11
11. WARRANTY .......................................................................................................................................... 11
12. MENU DIAGRAM OF MAXBEC2D .................................................................................................. 12
-2-
INSTRUCTION MANUAL
1. Introduction
The MAXBEC2D is a linear voltage regulator, to provide power for the receiver and servos used in
your models. For increased safety and reliability of this device, a magnetic switch is used to switch
the unit on and off. The MAXBEC2D is fully compatible with the JETI DUPLEX System and can
also be operated using the JETIBOX terminal.
To provide power to the MAXBEC2D, a 2-cell LiPo/LiIon battery can be used or a 5 to 6-cell
NiMh/NiCd battery pack. The voltage regulator supplies a constant voltage to your receiver and
servos, providing smooth servo motion regardless of the discharge state of batteries. For maximum
reliability, two battery packs can be used to provide power and the MAXBEC2D features two LED's,
indicating the connection state of the the connected packs.
The MAXBEC2D can be monitored and configured via the JETIBOX, either by direct connection, or
wirelessly using the JETI DUPLEX system. This allows the input voltage, temperature and output
voltage to be monitored but also, the output voltage can be configured and alarms can be set for input
voltage and temperature as required.
The system uses the 2.4GHz band to communicate, which allows not only data transmission, but also
the receiving of data back from the system. During operation, telemetry data allows the condition of
the system and any measured values to be displayed on the JETIBOX. Switching the MAXBEC2D
on and off is performed via the special magnetic switch and key, which simply needs to make contact
with the face-plate in the correct orientation for a short period of time to switch the unit on or off.
-3-
INSTRUCTION MANUAL
ACCU A
MAX
BEC2D
Med.
Full
Low
ACCU B
Input voltage Indicator
Voltage regulator – 2 Lixx, 5-6 Nixx
Ext.
ON/OFF
OUT 20A
6.0V
5.7V
5.4V
5.0V
ACCU A
ACCU B
Warn
.
Power input
Batt. A
Batt. B
Output
Magnetic switch
&
Ext. JR
connector for
Duplex/
JETIBOX
Pins for jumper
selection of
output voltage
LED
Batt. A
LED
Batt. B
LED
Indicator for
input voltage
Key
ON
WARN
ON/OFF
Target
Key orientation dot
Screw
LED ‘ON’ (Green)
LED ‘Warning’ (Red)
Screw
2. Description
2.1 MAXBEC2D
The supply batteries are connected to the MAXBEC2D via the two pairs of 1.5mm2 wires.
These wires do not have a plug fitted. The stabilized output power is delivered via one pair of
1.5mm2 wires with an MPX type plug already fitted for your convenience. The output voltage
may be adjusted by using the jumper next to the output wires. For programming and monitoring
the unit can be connected either to the data socket of your Duplex receiver, or directly to your
JETIBOX. Connecting the MAXBEC2D to your JETIBOX does not require that a separate
power-supply is connected to the JETIBOX, if the MAXBEC2D is switched-on.
2.2 Magnetic switch
The magnetic switch is used to switch the MAXBEC2D on or off. The switch consists of a
switch-plate, which receives the magnetic key and also the magnetic key itself. The switchplate is connected to the MAXBEC2D by a three-wire cable and features two LED's. The green
LED indicates that the MAXBEC2D is active. The Red LED indicates a warning condition.
LED „ON‟ – If the green LED is blinking, this indicates that the magnetic key is present,
but the unit is not switched on.
- If the green LED is continuously active, this indicates that the
MAXBEC2D is active and ready to power your receiver and servos.
LED „WARNING‟– If the red LED is continuously active, this indicates that the input voltage
is below the preset threshold. (This LED has the same function as the Warning LED on the
main unit)
-4-
INSTRUCTION MANUAL
3. Circuits
3.1 Powering the MAXBEC2D
The MAXBEC2D can be powered by up to two batteries. These can vary by cell-count and
chemistry and the MAXBEC2D will always take power from the battery with the highest
voltage. If both batteries have the same voltage, then the MAXBEC2D will take power from
both batteries together. LED Batt. A and/or LED Batt. B will indicate which battery the power
is being drawn from. This can also be determined from the JETIBOX.
If only one battery is to be used, it can be connected to battery input A or input B.
To connect your device(s) to the MAXBEC2D, either solder your wires (Please use wire of at
least 1mm2 diameter or larger, depending on your anticipated load) to the MPX output
connector of the MAXBEC2D or use the JETI MPX/3xJR cable, available separately. The
Duplex EPC receivers, such as the R6 EPC, R8 EPC, R12, R14 and R18 are already fitted with
a compatible MPX plug.
3.2 Communication with the MAXBEC2D
3.2.1 Connecting MAXBEC2D to the JETIBOX
Connect the MAXBEC2D to the JETIBOX using the red JR connector from the
MAXBEC2D. Plug this into the appropriate socket of the JETIBOX (The socket marked
signal, +, -).Connect the power-supply battery to the MAXBEC2D and switch-on the
MAXBEC2D using the magnetic switch. For this setup, there is no need to connect a
supply battery to the JETIBOX as it will be powered by the MAXBEC2D. There is
no wireless data transfer in this scenario. Please note that in this configuration, no alarms
will be generated because these rely on the wireless data transfer and acoustic alarm of
your Duplex transmitter module.
-5-
INSTRUCTION MANUAL
JETIBOX
MAGNETIC
SWITCH
POWER
OUTPUT
MAXBEC2D
EXT.
UOUT
+
-
Batt. A
Batt. B
DUPLEX
Receiver
EXT.SERVOS
DUPLEX
Sender
JETIBOX
MAXBEC2D
EXT.
UOUT
Batt. A
Batt. B
POWER
OUTPUT
from
MAXBEC2D
+
-
MAGNETIC
SWITCH
DUPLEX
Receiver
EXT.SERVOS
EXPANDER
E4
1.sensor
4.sensor
. . . .
DUPLEX
Sender
JETIBOX
MAXBEC2D
EXT.
UOUT
Batt. A
Batt. B
+
-
POWER
OUTPUT
from
MAXBEC2D
MAGNETIC
SWITCH
3.2.2 Connecting the MAXBEC2D to a DUPLEX receiver
Connect the MAXBEC2D to the receiver using the red JR connector from the
MAXBEC2D. Plug this into the socket marked 'Ext.' on the Duplex receiver. Connect
the supply battery to the MAXBEC2D, not forgetting to connect the power output of
the MAXBEC2D to your receiver! Now the JETIBOX can be connected to your
transmitter module for programming and monitoring of the system. Switch on your
transmitter and then use the magnetic key to switch-on the MAXBEC2D.
3.2.3 Connecting MAXBEC2D to a DUPLEX Expander
Connect the MAXBEC2D to the Expander using the red JR connector from the
MAXBEC2D. Plug this into any of the sockets on the Duplex Expander. Connect the
Expander to the Duplex Receiver into the socket marked 'Ext.'. Do not forget to connect
the MAXBEC2D to the receiver. Connect the power-supply battery to the MAXBEC2D
and connect the JETIBOX to the Transmitter module and switch-on the transmitter. The
MAXBEC2D can now be switched-on using the magnetic key.
-6-
INSTRUCTION MANUAL
4. Menu navigation
For parameter setting and monitoring of the MAXBEC2D, the JETIBOX is used. After connecting
the JETIBOX according to the above instructions, the screen shows the identification of the unit, the
temperature and the voltage of each supply battery. The active power-supply input is marked by a "*"
character.
By pressing the 'D' (Down) button on the JETIBOX, we enter the menu for the MAXBEC2D.
4.1 ACTUAL VALUE
MAXBEC MENU: Actual Value – By pressing the 'D' (Down) button of the JETIBOX, we can
view the actual measured values.
Acc. Input Volt – Shows the actual voltage of the power-supply batteries A and B.
Temperature – Shows the temperature of the MAXBEC2D.
Output voltage – Shows the actual voltage being output by the MAXBEC2D.
4.2 MIN / MAX – Minimum and Maximum Values
MAXBEC MENU: MIN / MAX - By pressing the 'D' (Down) button, we can view the extremes
of temperature and voltage. Please note that these values are deleted automatically or can be
deleted manually using the “Erase Data” menu option. The values are automatically erased
when the unit is switched on and the input voltages exceed those specified in the Trigger Level
menu option.
Accum. A MIN/MAX – Shows the minimum and maximum voltage of the battery connected to
input A
Accum. B MIN/MAX – Shows the minimum and maximum voltage of the battery connected to
input B
Temp. MIN/MAX – Shows the minimum and maximum temperature of the MAXBEC2D.
4.3 SETTING - Configuration Options
MAXBEC MENU: SETTING – By pressing the 'D' (Down) button, we can see the individual
parameter settings of the MAXBEC2D.
Erase Data – By simultaneously pressing the Left and Right button of the JETIBOX, all
minimum and maximum recorded values are erased (See also section “MIN / MAX – Minimum
and Maximum Values”)
Trigger level – Set the voltage values, the first overshoot of which, the previously recorded
minimum and maximum values are erased and recording begins again (See also section “MIN /
MAX – Minimum and Maximum Values”)
Output (x.x) Volt – Set the output voltage of the MAXBEC2D. Note that the output voltage of
the MAXBEC2D can be “set by jumper” or programmed using the JETIBOX. By
pushing the 'L' (Left) button, the MAXBEC2D can be configured purely by Jumper. By
-7-
INSTRUCTION MANUAL
Input
voltage
LED
Full
LED
Med.
LED
Low
LED
Warn.
> 7,4V
* * *
7,4 - 7 V
* * 7 - 6,6 V
*
< 6,6V
*
pushing 'R' (Right), the MAXBEC2D output voltage can be set directly from the
JETIBOX, overriding the physical position of the Jumper.
Beep Volt. Alarm – Set the letter of the alphabet to be acoustically signaled from the transmitter
module when the input voltage falls below that specified by “ALARMS->Voltage Alarm”.
Beep Temp. Alarm – Set the letter of the alphabet to be acoustically signaled from the
transmitter module when the temperature of the MAXBEC2D exceeds the limit specified by
“ALARMS-> Temp. Alarm” (In the Alarm menu - See section 4.4)
Beep Error – Set up of a morse code letter representing a battery error. If in the time between
switch-on and switch-off of the MAXBEC2D a change of the number of cells of the connected
batteries occurs, a battery error will be generated and this error will be announced acoustically
by emitting the above mentioned morse code letter. This function may be deactivated by
pushing and holding of the button L (left).
Trig. Level for WARN LED <x.xV> – The input voltage at which the red warning LED on the
magnetic switch-plate and on the MAXBEC2D should become active. This is also the voltage
at which the first green LED should deactivate.
Step Value – The voltage value of each step between the green input voltage LED's on the
MAXBEC2D (5.5-8.4V). The table below shows an example, assuming a step value of 0.4V
and a trigger level of 6.6V.
4.4 ALARMS
MAXBEC MENU: ALARMS – By pressing the 'D' (Down) button, we can scroll through the
available alarms offered by the MAXBEC2D.
Voltage Alarm A – Set the voltage at which point the alarm specified by the Beep Volt. Alarm
setting, will be sounded by the transmitter module for battery A. (See '4.3 SETTING Configuration Options')
Voltage Alarm B – Set the voltage at which point the alarm specified by the Beep Volt. Alarm
setting, will be sounded by the transmitter module for battery B. (See '4.3 SETTING Configuration Options')
Temp. Alarm – Set the temperature at which point the alarm specified by the Beep Temp.
Alarm setting, will be sounded by the transmitter module. (See '4.3 SETTING - Configuration
Options')
4.5 SERVICE
MAXBEC MENU: SERVICE – by pressing button D (arrow down) you will change to
depiction of the firmware version and to renewal of the sensor default setting.
-8-
INSTRUCTION MANUAL
Factory Defaults – by simultaneous pressing of arrows R and L (right and left) the factory
settings of the MAXBEC2D are loaded.
MBEC2D v. xx.xx ID xxxxx:xxxxx – product marking with firmware version and series number
(ID).
5. Output Voltage Adjustment
The output voltage of the MAXBEC2D can be adjusted in two ways:
Using the short-circuit (or 'jumper') plug directly on the unit, the output voltage can be
adjusted from 5.0, 5.4, 5.7 to 6.0 volts. For this approach, the MAXBEC2D must be
configured appropriately (See section 4.3 and refer to the Output (x.x) Volt configuration
option)
Using the JETIBOX terminal, navigate to the Output (x.x) Volt setting (See section “SETTING -
Configuration Options”) and change to your desired value. This can be done in steps of 0.1V
independently of the position of the short-circuit/jumper plug.
The factory-default setting is that the output voltage is set using the short-circuit/jumper plug.
6. Powering On
The system is activated by an external magnetic switch that contains the circuitry for the evaluation
of magnetic fields with a diametrically polarized magnet. Since the magnet is polarized, the
orientation of the magnetic key is important when being offered to the switch-plate. The magnet is
supplied with an aluminium housing, which marks the correct orientation in which it should be
offered to the switch-plate. Please refer to the safety precautions outlined in section “Safety
Precautions for the Manipulation of Magnets” for correct handling of magnets.
-9-
INSTRUCTION MANUAL
The switch is designed to be mounted on the fuselage of your model. When the key is offered to the
switch, the green LED will flash and after approximately 1 second, the LED will be continuously lit,
indicating that the MAXBEC2D is now active.
For de-activating the MAXBEC2D, the same principles apply. Offer the key to the switch in the
correct orientation. The green LED will flash and after approximately 1 second, the LED will go out,
at which point the MAXBEC2D is now switched-off.
The whole system remembers whether it has been switched-off or modified. If the MAXBEC2D is
switched-on and the battery is disconnected, then the next time the battery is connected, the
MAXBEC2D will immediately be switched-on. For safety and security, the MAXBEC2D should
always be switched-off via the magnetic switch before disconnecting the battery power.
After connecting the power-supply battery and switching the MAXBEC2D on via the magnetic
switch, the unit automatically checks the number of connected batteries. The MAXBEC2D
acknowledges a battery connection if the input voltage on either input exceeds 1 volt. If at any time
the input voltage drops below 1 volt, then an error message 'X input error' is displayed, where X is A
or B, to indicate on which input the problem was detected. The error condition remains until the unit
is switched-off and the battery is disconnected.
Always follow the same procedure when switching on/off. To switch-on, first connect the
batteries and then use the magnetic switch to activate the unit. To switch-off, always use the
magnetic switch to turn-off the unit before disconnecting the batteries.
7. Installation
The MAXBEC2D can be mounted in your model using the 4 mounting holes on the unit, along with
the rubber-grommets to reduce vibrations. The magnetic switch offers two mounting holes and the
upper-lid (or face-plate) should be used as a mounting template for this part of the unit. The latter is
designed to be mounted on the outside of the unit, being mechanically secured by the screws
included. This allows for easy switching on/off of the MAXBEC2D and at the same time allows good
visibility of the green and red LED's on the face-plate of the switch.
To ensure safe and reliable operation of your MAXBEC2D, please ensure an adequate flow of
cooling air to allow the heat-sink to dissipate heat.
8. Firmware Update
The equipment firmware may be updated by a PC via the converter unit JETI USB Adapter. In the
USB Adapter instructions you will find a description of the installation procedure of the USB
Adapter controller as well as the update program.
9. Safety Precautions for the Manipulation of Magnets
Since the MAXBEC2D 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.
-10-
INSTRUCTION MANUAL
Technical data:
MAXBEC2D
Recommended input voltage
5.5 – 8.4 V
Maximum input voltage
16 V
Number of possible power
supply batteries
1 or 2
Adjustable output voltage
5.0 - 6.0 V (0.1V step)
Maximum current (pulse)
20 A
Continuous current
12 A table bellow
Quiescent current
240 µA
Maximum power dissipation
20 W
Operating Temperature
- 10°C až +130°C
Weight
85 g
Dimensions
100 x 29 x 16 mm
Number of power
supply cells
Output voltage [V] / Continuous current [A] *
(input voltage)
5 V
5,4 V
5,7 V
6 V
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
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!
10. Technical Specification of the MAXBEC2D
Table showing the dependency between input voltage, output voltage and continuous current capability
11. Warranty
The MAXBEC2D carries a warranty valid 24 months from the date of purchase under the condition
that it has been operated as per these instructions and there is no mechanical damage. All servicing
and repairs during and after the warranty period is carried out by the manufacturer.
The manufacturer hopes you enjoy this product: JETI model s.r.o. Příbor, www.jetimodel.cz
-11-
INSTRUCTION MANUAL
12. Menu Diagram of MAXBEC2D
-12-
Loading...