JETI model Central Box 400 User Manual
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Modellbau Lindinger GmbH
www.lindinger.at
Protected multi-channel servo interface
EN
EN
User Manual
400400400
Modellbau Lindinger GmbH
www.lindinger.at
1. Introduction ..................................................................................... 3 EN
1.1 Features ................................................................................... 4 EN
2. Description ........................................................................................ 5 EN
3. Connection ...................................................................................... 7 EN
3.1 Power supply of Central Box 400 ........................................... 7 EN
3.2 A d va n c e d p o w e r s o u r c e s s e t t i n g s o f t h e
Central Box 400 ...................................................................... 10 EN
3.3 Overload protection of servos ............................................ 11 EN
3.4 Connecting Central Box PPM variant ............................ 12 EN
3.5 Connecting Central Box EX Bus variant ........................ 13 EN
3.6 Putting the Central Box 400 into operation ...................... 14 EN
3.7 Alternative functions - logical input .................................. 15 EN
3.8 Alternative functions - logical output ............................... 15 EN
3.9 Installing safety mechanism of connectors ..................... 16 EN
4. Configuration via JETIBOX ....................................................... 17 EN
4.1 Actual values .......................................................................... 18 EN
4.2 Minimum / Maximum values ............................................. 18 EN
4.3 Setting ..................................................................................... 19 EN
4.4 Out Pin Set ............................................................................... 20 EN
4.5 Alter. Function ........................................................................ 21EN
4.6 Alarms ..................................................................................... 22 EN
4.7 Recording ............................................................................. 22 EN
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4.8 Service information .............................................................. 23 EN
5. Configuration via the DC/DS transmitter ............................. 24 EN
5.1 Settings .................................................................................... 25 EN
5.2 Alternate functions of pins .................................................. 26 EN
5.3 Servo Fail-Safe ....................................................................... 27 EN
5.4 Servo Output Mapping ....................................................... 28 EN
5.5 Telemetry ............................................................................... 28 EN
5.6 Telemetry Min/Max .............................................................. 29 EN
5.7 Recording ................................................................................ 30 EN
6. Data recording ............................................................................... 31 EN
7. Telemetry reading ........................................................................ 31 EN
8. Firmware update ........................................................................... 32 EN
9. Technical specifications of the Central Box ....................... 33 EN
10. Warranty, service and the technical support ....................... 34 EN
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1 Introduction
The Central Box 400 is a switchboard designed for the complete
management of servos in large to giant models with an emphasis
on safety. The Central Box 400 has a unique design that provides
overload protection at each servo output. An independent, very
powerful BEC (battery eliminator circuit) for each battery input
makes the Central Box an optimal solution to connect up to 24
servos. The Central Box 400 can manage the batteries and fully
supports the JETI EX telemetry system. Up to two receivers with
serial (PPM, EX Bus, UDI) output can be connected to the Central
Box 400. With a JETI DC/DS transmitter, the full potential of the
Central Box can be used, such as easy configuration of the Central
Box, EX telemetry, and very fast servo response.
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FW ver. 1.05, ver.1.0 -2015-05
ENGLISH
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1.1 Features
Two independent high-powered BEC´s for voltage
stabilization of servos
overload protection on each channel
overload protection on Rx, Ext, and Switch outputs
possibility to connect up to 2 receivers with serial interface
(PPM, EX Bus, UDI)
built-in Expander function with the possibility to connect JETI
EX sensors
input for magnetic switch or RC switch
batteries connected via MPX connector
stabilized voltage output via a pair of MPX connectors
100Hz mode of servo outputs (10ms period)
supports EX telemetry (voltage, current, capacity, and
temperature measurement, overload indication, ...)
internal memory for storage of telemetry data
USB connectivity for connection to PC
easy settings changes via DC/DS transmitter
firmware updatable
suitable for use with high voltage (HV) servos
robust metal construction with mounting holes
LED status indication
each output is individually configurable (channel assignment,
trim, reverse, ATV)
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2 Description
Central Box 400 has 24 outputs for servos with individual
overload protection. More over, outputs Y17-Y24 can be
configured as:
servo output
logical input
logical output
Control signals generated by the Central Box to servos are 5V. This
solution ensures reliable servo signal transfer for longer distances.
Ext1 - Ext4 ports can be configured for use as:
inputs for telemetry sensors
EX Bus expanders - used for connecting devices which support the
EX Bus protocol (the Central Box, a sensor,...)
Ext4 - slot is also used as an output to connect a JETIBOX to
configure the Central Box and for the firmware update connection
Rx1 - primary input for connecting receivers with serial output (EX,
PPM, UDI)
Rx2 - secondary (backup) input for connecting receivers with serial
output (EX bus, PPM, UDI)
Switch slot is reserved for connecting magnetic switch or RC Switch
BEC output serves as the output for stabilized voltage to power
supply other Central Boxes that can be power supplied from the
Central Box 400. The voltage at the output has the same level as the
voltage for supplying the ser vos. Voltage for the servo outputs is
adjustable from 5-8V with 0.1V steps.
For more safety, the Central Box 400 contains two BEC regulators
connected in parallel. Information about the correct power supply
and a faultless condition of the individual branches is indicated by
green LED and also by telemetry. It is not recommended to use the
BEC outputs for direct power supply of servos or receivers with
servos. These devices are not individually protected. If one element
of the branch supplied from the BEC output is overloaded, the
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entire branch is disconnected. The BEC output current limit is 15A.
BATT1 and BATT2 battery inputs
To avoid accidentally disconnecting or pulling the cable with the JR
or MPX connector out, e.g. due to vibrations, it is possible to install
safety mechanism for connectors on the Central Box. Safety
mechanism for connectors fixes not only connectors of servos,
receivers, and sensors, but also BEC outputs (MPX connectors), see
chapter Safety mechanisms of connectors
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1
BATT1 BATT2
24 channel servo interface
Fig. 1: Central Boxu 400 description
Rx 1
Rx 2
Ext1
LED1 LED2
BEC OUT PUT
BATTERY INP UT
6 -17V
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Ext2
Ext4
Ext3
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3 Connection
3.1 Power supply of Central Box 400
The Central Box 400 can only be powered from batteries connected
to BATT1 or BATT2. When selecting the power supply it is necessary
to follow the power requirements and the number of the servos you
use. Batteries for power supply must be sufficiently large to prevent
a decrease of the output voltage for servos when loaded (voltage
depression) and to allow the overload protection function properly.
Together, both power supply methods must be able to supply a 20A
continuous and 120A peak current. To take full advantage of
internal BEC we recommend to power the Central Box from three
Lixx cells.
The power batteries are connected to the Central Box using MPX
connectors. The Central Box allows up to two batteries to be
connected. The selection of battery to supply power is based on the
voltage set in individual BEC´s. During use, the power is actually
supplied from the battery whose BEC has higher voltage set. If the
voltage is the same, the power can be used from both batteries at
the same time. This rule applies to the standard power supply. This
means that the power battery voltage should be greater than the
required BEC voltage setting. When the voltage of the batteries is
different, the power is not shared and each pack is isolated from the
other. This allows you to safely use batteries of different capacity,
number of cells, and chemistry type. If the power for the Central Box
is provided only from one battery, it can be connected via either the
BATT1 or BATT2 input.
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Rsat2 (Rx1)
PPM PPM
Ext.
SERVO standard
Central Box 100
(standard SERVO)
Ext.
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1
Rsat2 (Rx2)
Rx 1
Rx 2
Ext1
LED1 LED2
BEC OUTPUT
RC Switch Magnetic Switch
Ext4
Ext2
Ext3
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BATT1 BATT2
BATTERY INPUT
24 channel servo interface
6 -17V
Input Voltage 2-4 LiXX
ON/OFF
ON
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24
SERVO standard
Output Voltage 6V
Fig. 2: Example of the Central Box 400 powered for the use with
standard servos (voltage range up to 6V)
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Ext.
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2
1
Rsat2 (Rx2)
Rx 1
Rx 2
Ext1
LED1 LED2
BEC OUTPUT
RC Switch Magnetic Switch
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Ext4
Ext2
Ext3
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Rsat2 (Rx1)
PPM PPM
Ext.
High voltage SERVO
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BATT1 BATT2
Central Box 100
(High voltage servo)
Fig. 3: Example of the Central Box 400 power for use with
HIGH Voltage servos
Caution:
The Central Box can only be power supplied from
BATT1 or BATT2.
BATTERY INPUT
24 channel servo interface
6 -17V
Input Voltage 2-4 LiXX
ON/OFF
ON
High voltage SERVO
Output Voltage 7.4V
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3.2 Advanced power sources settings of the
Central Box 400
In the settings of the Central Box it is possible to adjust the BEC to
the Advanced mode. In this mode you can adjust the voltage of
individual power supplies and thus one source can be used in
preference to the other one. This way you can manage which
battery provides the energy. This can lead e.g. to a situation when
under normal circumstances only one power supply is used. The
other one is intended only as a backup. You achieve this function by
adjusting the supply voltage of BEC1 greater than of the BEC2 or
vice versa. E.g. UBEC1 is 7.4V and UBEC2 is set to the value of 5.5V.
The voltage stabilization of individual power sources can be
deactivated. If the input battery voltage is lower than your settings,
or if there is the same voltage on the BEC and on the input battery,
then the voltage is not stabilized. For example if 6V are used and the
U BEC is set to 8.4V, the voltage of the power supply output is max.
6V, which is not stabilized.
BATT1
BATT2
Fig. 4: The block scheme of power supply.
BEC1
BEC2
UBEC1
UBEC2
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Mixer
UOUT
BEC OUTPUT
SERVO
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3.3 Overload protection of servos
The Central Box has an overload protection circuit on every servo
output. In case of an overload, the affected servo output is
disconnected from the power supply while the remaining servo
outputs are still powered.
NO
SERVO
SERVO
SERVO
NO
SERVO
Rsat2 (Rx1)
Ext.
Caution:
SERVO
NO
SERVO
Fig. 5: Correct connection of servos to the Central Box
It is prohibited to connect servos directly to any
receiver that is powered from the Central Box 400
(Rx1 or Rx2). In this case the receiver can be fully
disconnected from the power supply, which could
lead to the signal loss.
Caution:
It is not recommended:
- to connect more Central Box outputs to one servo
- to use a Y cable (connecting two servos to one
output)
YES
SERVO
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