PowerBox Systems Royal SR2 Bedienungsanleitung
INSTRUCTION MANUAL
10/2021
PowErBox
royAl sr2
2PowerBox-Systems − World Leaders in RC Power Supply Systems
Dear PowerBox customer,
The PowerBox Royal SR2 once again sets new technical standards, offering a con-
vincing array of features which until now have been the exclusive preserve of pro-
fessional aviation. P² servo bus, 26 channels, 12-axis gyro, two pairs of regulators
and a full-color screen - these are just a few of the technical renements which the
PowerBox Royal SR2 offers the ambitious pilot.
The PowerBox Royal SR2 is housed in a high-quality, extremely compact case with
integral aluminum heat-sink. The large cooling area dissipates the heat generated
by the four regulators, which are wired in pairs to provide energy for all 26 ser-
vos. Both regulator pairs can be set to any of four different voltages. This makes it
possible to combine standard 6V servos with high-performance HV types, without
additional regulator modules.
For the rst time all the data relating to all the model’s servos can be monitored, and
their parameters adjusted¹ from the transmitter. This development has been made
possible by the introduction of our P²-BUS protocol, whose aim was to maintain
complete control of all the components in the model. The PowerBox Royal SR2 has
four fully independent P²-BUS interfaces, which can be set to two different voltage
levels.
These interfaces can be used to connect servos with an integral P²-BUS, or conven-
tional servos with the new P²-ServoBridge. The P²-ServoBridge is an adapter which
converts the P²-BUS into a PWM signal for normal servos; it also has an integral
innitely variable electronic fuse.
This has allowed us to implement a bus system in the model which is signicantly
superior to standard PWM wiring in respect of security and performance.
All data relating to the receivers and power supply system are displayed on the
full-color screen, and all settings are available in a carefully structured, bi-lingual
menu which is easily understood.
The TFT screen is also housed in a high-quality aluminum case, and is clearly legible
even in full sunshine.
Connecting the optional iGyro SAT converts the PowerBox Royal SR2 into a 12-axis
gyro which has few equals in terms of functionality. The gyro can be set up to suit
even the most complicated of models in just a few minutes. After this, the correct
gyro gain is set from the transmitter in a test-ight using a rotary control. A whole
series of supplementary Expert settings is available to allow the pilot to ne-tune
the gyro effect to suit his unique individual preferences.
Naturally a GPS III sensor can also be connected to the PowerBox Royal SR2. This
www.powerbox-systems.com 3
unit provides automatic gyro gain adjustment in relation to airspeed.
The PowerBox Royal SR2’s 26 outputs are provided with an ample power supply,
and they can also be assigned individually to various functions. All outputs can be
allocated direct and gyro channels as well as door sequencer functions.
The PowerBox Royal SR2 has an automatic servo-matching function which is a
new development. This system makes it possible to match a maximum of three
servos to each other automatically in just a few seconds using ve points. All you
have to do is select the servos which are inter-connected mechanically, and start
the automatic procedure.
Of course, each output can also be adjusted manually using the servo-matching
function and the graphic-based menu.
The nal aspect of the system is its pair of integrated door sequencers. In addition
to a retractable undercarriage, it is possible - for example - to implement a latched
opening canopy control system without additional devices. The rst door sequen-
cer can be set up in just a few minutes with the help of a Setup Assistant, and three
modes are available.
Additional special settings are equally easy to set up thanks to the on-screen dia-
grams in which the entire timed sequence can be seen at a glance.
The PowerBox Royal SR2 can be set up and controlled virtually completely² from
PowerBox and Jeti transmitters! Telemetry for every aspect of battery and receiver
data is available for all supported systems. If a GPS III is connected to the unit, GPS
data are also available - in so far as your radio control system supports this.
² Except sequencer and setup assistant
4PowerBox-Systems − World Leaders in RC Power Supply Systems
TABLE OF CONTENTS
1. INITIAL INSTALLATION: GENERAL SEQUENCE OF OPERATIONS ...................................7
2. INSTALLATION, CONNECTIONS..........................................................................................7
3. SWITCHING ON AND OFF ..............................................................................................10
4. MAIN MENU .................................................................................................................. 12
5. GENERAL SETTINGS.....................................................................................................13
6. SETUP ASSISTENT .......................................................................................................14
7. SERVO MATCHING........................................................................................................19
8. DOORSEQUENZER.........................................................................................................23
9. OUTPUT MAPPING .......................................................................................................29
10. P² SERVOBUS................................................................................................................30
11. INPUT MAPPING........................................................................................................... 33
12. IGYRO ...........................................................................................................................34
13. GYRO SETTINGS - BEFORE THE FIRST FLIGHT.............................................................37
14. SPECIFICATION ............................................................................................................39
15. SET CONTENTS.............................................................................................................39
16. DIMENSIONS.................................................................................................................40
17. ACCESSORIES...............................................................................................................41
18. SERVICE NOTE ..............................................................................................................42
19. GUARANTEE CONDITIONS............................................................................................ 42
20. LIABILITY EXCLUSION..................................................................................................43
www.powerbox-systems.com 5
royAl sr2
6PowerBox-Systems − World Leaders in RC Power Supply Systems
FEATURES
+ 26 channels
+ High-performance battery backer with high continuous load capacity
+ Four P2-BUS outputs with full telemetry support for servos
+ 2.4” TFT-screen, legible in sunlight
+ Bi-lingual menu system
+ Consistent duplication of all power electronics
+ Redundant electronic switch
+ Servo matching for all 26 outputs
+ Auto matching function
+ Two independent door sequencers with Setup Assistant
+ The latest integrated iGyro technology, using the iGyroSAT as gyro sensor
+ Twelve independent gyro outputs for: 4x aileron, 4x elevator, 4x rudder
+ Individual gain control for all twelve gyro outputs
+ Special regulatory algorithm for xed-wing models
+ System detects all transmitter mixers
+ Four selectable output voltages: 6.0 V, 7.4 V, 7.8 V or unregulated
+ Two different voltage levels – left and right side separated adjustable
+ Graphic menu diagrams ensure ultra-simple programming
+ Fast basic setup procedure using the sophisticated Assistant
+ Optional GPS III for speed-dependent gyro compensation
+ Telemetry data for PowerBox P²BUS, Futaba S.BUS2, Jeti Ex-BUS, Spektrum
SRXL2, Multiplex M-Link, JR DMSS und Graupner HoTT
+ Transmission of battery, receiver and GPS* data
+ Virtually all features can be controlled from PowerBox and Jeti transmitters
+ Selectable servo frame rate: 10ms, 12ms, 14ms, 16ms, 18ms
+ Servo feedback current suppression
+ Latest 32-bit micro-processor for precise, high-speed signal processing
+ High-performance machined heat-sink for optimised heat diffusion
+ Machined, anodised aluminium switch and screen case
+ Compact dimensions
*with GPS III connected
www.powerbox-systems.com 7
1.INITIAL INSTALLATION: GENERAL SEQUENCE OF OPERATIONS
When installing the unit it is important to keep to the standard sequence described
below, and adhere to the subsequent setup stages, as this ensures that your ins-
tallation of the Royal SR2 will be swift and problem-free. The individual points are
explained in full in the remainder of these instructions:
- Mounting the PowerBox, switch and screen
- Connecting the receiver and batteries
- Settings in the General Settings menu
- Setting up all the functions at the transmitter
- Carrying out the Setup Assistant
- Carrying out the Door Sequencer Assistant1
- Assigning all remaining functions in Output Mapping
- Setting up all control surface travels, ight modes, Dual-Rate, Expo etc. at the
transmitter
- Using Servo Matching to equalise servos operating in parallel
- Learning the stick end-points in the iGyro menu 2
- iGyro set-up ight 2
- Fine-tuning the iGyro 2
1 not required if wheel doors are not present
2not required without a gyro
2. INSTALLATION, CONNECTIONS
a) Mounting
The PowerBox Royal SR2 should be mounted in the model on a robust sub-struc-
ture using the four screws, rubber grommets and brass eyelets supplied in the
set. The installed location is not important, but if an iGyroSAT is to be used, the
sensor must be installed perpendicular to the model’s centreline. Ideally the TFT
screen should be in a clearly visible location. The very bright screen lighting ma-
kes it easy to read even in full sunshine, so no special provisions have to be made
here. The screen is connected to the socket marked Display on the side of the
PowerBox.
8PowerBox-Systems − World Leaders in RC Power Supply Systems
The switch should be mounted in the fuselage side. As with previous units, a
wooden doubler should be glued to the inside of the switch aperture - especially
if the fuselage is made of GRP - in order to avoid subjecting the switch to pow-
erful vibration. The set includes a template for the switch aperture. An exposed
switch is often undesirable in scale models, and for such applications we offer
an alternative switch in the shape of the MagSensor. However, please note that
the SensorSwitch is required for the programming procedure - unless you are
using a Core or Jeti RC system - and for this reason it should always be available
for use. The SensorSwitch is plugged into the socket marked Switch on the side
of the PowerBox.
b) Receivers
Once you have installed the PowerBox Royal SR2, the screen and the switch, it is
time to connect the receivers. In principle all SRS PowerBox systems are totally
reliable when used with a single receiver. However, in view of the low cost of a
second receiver compared with the value of the model, we always recommend
installing a second receiver.
Ideally the receivers should be spaced well apart inside the model, as this increa-
ses the likelihood that at least one receiver will have good reception at all times
- even under difcult reception conditions. It is permissible to extend the serial
bus connection between receiver and backer to any length, as the signal is digital,
and therefore extremely resistant to external inuences.
The PowerBox Royal SR2 can be used with a wide range of radio control sys-
tems: PowerBox CORE P²BUS, Futaba S.BUS2, Jeti EX-BUS, Spektrum SRXL2,
Multiplex M-Link and Graupner Hott. The rst four systems share one common
feature: servo signals and telemetry data are carried on a bus system, and this
allows the receivers to be connected to the Royal SR2 using a single patch lead
each. Multiplex and Hott systems require an additional connection between the
telemetry output of the PowerBox and the receiver’s telemetry input.
The Royal SR2 automatically detects the system to which it is connected. Ho-
wever, when the radio is rst switched on it may take a few seconds before the
system is unambiguously recognised. Once detected, the unit stores the system
type, and it will start immediately next time it is switched on.
• PowerBox CORE
Connect one or two receivers to RX1 and RX2 at the P²BUS output. If only one
receiver is to be used, it must be connected to RX1 to provide telemetry trans-
www.powerbox-systems.com 9
mission. If a GPS III is connected to the FastTrack input, the Competition also
delivers GPS data to the transmitter.
• Jeti EX-BUS
One output of the receivers you intend to use must be set to EX-BUS. The frame
rate should be set to 10ms, and the Failsafe function must be OFF. If you intend
to use only one receiver, then it must be connected to RX1 to transmit telemetry
data. If a GPS III is connected to the FastTrack input, the Competition also deli-
vers GPS data to the transmitter. Only the REX-Type receivers are supported
• Futaba S.BUS2
Connect one or two receivers to RX1 and RX2 at the S.BUS2 output. If only one
receiver is to be used, it must be connected to RX1 to provide telemetry transmis-
sion. This receiver must also be dened as the telemetry receiver at the transmit-
ter. In order to receive telemetry data you must carry out a Load New process in
the Telemetry Sensor menu; this action completely erases the sensor list. Now
select Slot 16 in the sensor list, and select PowerBox. The telemetry data now
appear in Slot 16 or later. If a GPS III is connected to the FastTrack input, the
Competition also delivers GPS data to the transmitter.
• Spektrum SRXL 2
Connect one or two SPM4651T satellites to the Royal SR2 using the optional
adapter lead set (#9192). If only one receiver is to be used, it must be connected
to RX1 to provide telemetry transmission. At the transmitter you will now see the
battery data displayed under PowerBox Sensor. If a GPS III is connected to the
FastTrack input, the Competition also delivers GPS data to the transmitter.
By default the Competition works in DX18 compatibility mode.
• Multiplex M-Link
Set the B/D sockets of the receivers you intend to use to SRXL V2. This gives you
sixteen channels. The Failsafe function must be OFF.
To use telemetry you must disable the Telemetry function of one receiver using
Multiplex Launcher. The Tele output of the PowerBox should be connected to the
Sensor input of the other receiver.
Note: do not attempt to register the PowerBox as a sensor at the transmitter;
this function is not implemented.
10 PowerBox-Systems − World Leaders in RC Power Supply Systems
If a GPS III is connected to the FastTrack input, the Competition also delivers GPS
data to the transmitter.
• Graupner Hott
Set one output of both receivers to SUMD-OF16. For example, if the receiver is a
GR16/24, this will be output 8. Connect these outputs to the RX1 and RX2 inputs
of the PowerBox. If a GPS III is connected to the FastTrack input, the Competition
also delivers GPS data to the transmitter.
For the telemetry function you must connect the TELE output of the PowerBox to
the Telemetry input of one receiver.
c) Connecting the batteries
It is possible to use 2S LiPo, 2S LiIon, 2S LiFePo or 5S NiMH batteries with the
Royal SR2. We recommend that you use our PowerPaks, which feature integral
charge electronics. The fundamental rule regarding battery size is that one bat-
tery on its own should be capable of powering the model reliably.
If you intend to assemble your own batteries please note that correct polarity is
vitally important. The unit does not include reverse polarity protection, as this
would involve performance losses.
3. SWITCHING ON AND OFF
This is the procedure for switching the PowerBox on: hold the SET button pressed
in until the LED glows red. Continue to hold it pressed in while you also press but-
tons I and II briey to conrm the switching process. This method enables you to
switch the batteries on individually; for example, in order to check that both packs
are working properly, and deliver sufcient current when all the control surfaces
are moved.
The same procedure is used to switch off.
Note: connecting a battery to the PowerBox with incorrect polarity, even very
briey, will immediately destroy the voltage regulators!
Note: only one receiver (Bind A or Bind B) can transmit telemetry!
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