ESC SBEC Series Scorpion Power System User Guide

A: The ESC is compatible with various types of aircraft
including airplanes and helicopters. Ensure to set the appropriate
mode based on your aircraft type.

Q: How do I monitor RPM using the built-in phase sensor?

A: Connect the slave cable signal wire to external governors for
monitoring RPM or telemetry via compatible devices.

Q: Is it possible to adjust the temperature protection
feature?

A: Yes, the ESC comes with a built-in temperature sensor with
adjustable temperature protection settings.

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Scorpion Tribunus III (14 Cell) ESC SBEC Series Tribunus III 14-220A User guide

SAFETY
– Scorpion and their re-sellers are not responsible for your use of this product, or sustained damage or injury as a result of its usage.
– Understand that an electric motor that is connected to a baery and Electronic Speed Controller (ESC) may start unexpectedly and cause serious injuries. Always treat them with necessary respect. Keep the propeller away from your body and others at all mes.
– We suggest that you remove the propeller when you are working on an airplane with the baery connected.
– We suggest that you remove the pinion when working on a Helicopter with the baery connected.
– Please observe all local laws regarding the flying of UAV (Unmanned Aerial Vehicle) aircra.
– Never fly over others or near crowds.

Included in the Box
1 x Tribunus III ESC (SBEC) 1 x Master and Slave BEC cable 1 x Mounng Hardware Set 1 x Thank you card
Features of Tribunus III ESC SBEC
1. All new PCB design with improved heat transfer techniques for reducing operaonal temperature, and improving the power rang of the ESC.
2. High Strength BEC with programable voltage range from 5V 12V / OFF (see page #2 for specificaons)
3. Dedicated Cooling Fan port with temperature controlled enabling.
4. Aluminum Heat Sink and case with mounng tabs and Fan mounng holes.
5. Wide input Voltage range (see page #2 for specificaons)
6. 32-bit processor enable superb protecon features such as over current, over voltage (limitaons apply), de-mag / de-sync, temperature protecon, etc
7. Dynamic Frequency / Dynamic Timing Auto adjust in real me to provide peak efficiency and torque in all situaons.

8. Build in phase sensor (RPM sensor) on the slave cable signal wire for connecng to external governors, or monitoring RPM via
Telemetry 9. High Current, with over current protecon 10. Built in temperature sensor with adjustable
temperature protecon 11. Airplane / Airplane with Reverse / Helicopter
Modes. Stored / Unstored Governor Mode, External Governor Mode. 12. Ulizes Morse Code for Communicaon / Error Warnings 13. Full Telemetry read out with compable devices such as Mikado Vbar Control, Futaba, Je or to many other systems (with 3rd party converters or to any micro controller via
Unsolicited Telemetry Protocol) (email support@spihk.com for more informaon). 14. Full Data Logging which can be pulled from the ESC and saved / exported (.CSV) 15. Downloadable PC program and Android
Apps 16. PC Connecvity / Android Connecvity (OTG
cable needed), with USB C cable. Or connect via Vlink II cable + Diode adaptor cable (sold separately) 17. Programable via Mikado Vbar Control Radio (Scorpion Telemetry cable required) 18. Upgradeable Firmware (using Sproto Soware)

Model Type
Lipo Baery
Current Rang (Connuous / Peak) BEC Voltage Range BEC Rang (Connuous / Peak) Resistance Weight (without wires / with wires) Size
Mounng Tab Dimensions Temperature controlled Fan Program Cut Type Cut off delay
Protecon Features Airplane modes Drag Break Acceleraon Speed Acve Free Wheeling (PWM mode) Heli Gov Mode So Start Acceleraon Speed Bail out mode Governor Gains Rotaon Timing Frequency Data Logging Data Logging Export Format Telemetry Communicaon Protocol Input Signal (Master Cable) Phase (RPM) Signal MAX RPM

ESC Specificaons
Tribunus III 14-220A
13-61 Volts
220A / 300A Peak
Programable – OFF / 5.0 / 6.2 / 7.2 / 8.4 / 8.8 / 10.0 / 11.0 / 12.1 Volt 15A / 30A Peak 0.55mOhms *2 194g / 294g
46.1 / 80.7 / 32.3 mm 4 x M3 26.0 x 89.0 mm
Available (always 8.0V regardless of BEC Voltage) from 30-100%
1000ms-65000ms Adjustable Protecons: Temperature, Voltage, Current, Capacity Fixed Internal Protecons: Temperature (maximum), De-Sync, De-Mag, Phase Current, etc.
Airplane Mode / Airplane with Reverse Mode Available on Airplane Mode only 100ms-1000ms
Always on for Helicopter Mode, selectable for Airplane mode Scorpion Internal Gov / VBAR Gov / External Gov Only Available on Heli Mode Fast, Medium, Slow, Custom Programable Fast, Medium, Slow, Custom Programable
Available on Heli mode: So, Default, Hard, Custom CW / CCW programmable
5deg – 30 deg Dynamic Timing 8kHz – 32kHz Dynamic Frequency RPM, Throle %, Voltage, Current, Temperature, Output Power, Mah, Errors
.TGB (sproto) / .CSV Mikado VBAR / Futaba SBUS 2 / Je EX Bus / Unsolicited
1000µs – 2000µs PWM (programable) Available (Signal wire of Slave Cable)
240,000 Electrical RPM

1.0 Connecng your ESC
*Please refer to the diagram on the next page to properly connect your ESC.

1.1 Add your baery connector
You must aach a suitable baery connector of your choice to the red (posive) and black (negave) power wires. Mount the baery connector to the wires. ENSURE THAT THE POLARITY IS CORRECT (red wire (posive) to baery red wire (posive), black wire (negave) to baery black wire (negave)). This ESC does not have reverse polarity protecon, and plugging in reverse polarity will damage and void your ESC warranty.
This ESC does not have an spark feature, we recommend to use a An Spark Connector, or expect a spark when connecng the baery.
NOTE: Do not add excessive length of wire between your Baery and ESC without proper precauons. Doing so without the required precauons can cause voltage fluctuaons which may damage your ESC and void the warranty. See more info in Secon 16.
1.2 Connect Motor to ESC
We recommend using bullet connectors to connect your ESC to your motor as most of the Scorpion motors come with pre-installed bullet connectors that include a female set for your ESC. Solder the corresponding connectors for your motor to the phase wires coming from the ESC, or solder the phase wires directly to the motor leads. ESC direcon can be simply reversed in ESC programing. Once connected DO NOT allow any exposed wire or connectors to contact each other! Ensure that a proper insulaon material (such as heat shrink) is around each of the three wires. Failure to do so will cause the ESC to malfuncon and void your warranty. NOTE: If your Motor must be placed far from the baery, it is beer for the excessive wire length to be be tween the ESC and the Motor, rather than the Baery and ESC. If doing this, then ensure the phase wires are equal length, and not wrapped around each other.

PC Port (data port) = Telemetry Data – Depending on your Transmier System / Gyro used, the cabling used to connect, will be different. – Mikado VBC radio system use a specific Scorpion Telemetry Cable – Other radio systems (Futaba / Je) use different Cable for connecon (See Futaba and Je Telemetry Guides for more details) – Some FBL/ Radio system, use only the signal wire from the PC port (brain / ikon) – Please be sure to research about the telemetry protocol for your specific Transmier system if you are unsure.
1.4 Ensure Proper Cooling and / or Mount the Cooling Fan
– The ESC must have direct access to natural airflow cooling to operate at the rated specificaons. Ensure to use adequate baffling and entry / exit venng to ensure the ESC has access to at least 35m/s or airflow.
– If you do not have enough airflow you must use the Dual Cooling Fan with entry / exit venng. Failure to properly cool your ESC will significantly reduce the current capabilies and your warranty may be voided.
– The Fan port of ESC outputs 8.0V at all mes regardless of BEC voltage. – Pay aenon to the plug orientaon. If you plug the fan with the ground wire toward
the switch symbol, it will be temperature controlled. If you plug the ground wire towards the ground (-) symbol, the fan will be always on.
1.5 Mounng the ESC
Mount the ESC in an area of your model which has access to airflow with the Heatsink side of the controller facing outward. We recommend using the integrated mounng tabs with included hardware to aach to the airframe for secure mounng and easy removal.

1.3 Connect to your Receiver / External Governor / Telemetry Port
Master BEC Port (Master Cable = a red plasc connector) = Throle Signal + BEC power – Connect to Throle Channel on RX / Gyro
Slave BEC Port (Slave Cable = a black plasc connector) = RPM Signal + BEC Power – Connect to External Governor / RPM port. (Ensure the RPM port is suited to take BEC power, and if not, separate the +/- cables from the signal wire, and plug them into another port). – You may unplug the yellow (signal) wire on the slave cable if you do not use the RPM signal for telemetry or external governor.

1.6 Tribunus ESC BEC
For safety reasons we recommend using a Scorpion backup guard II. The Backup guard can be used on any BEC voltage from 5.1 to 12.1V. Make sure that the Backup guard II Lipo is charged. Also make sure all used RC components are designed to run at the set BEC voltage. NOTE : The induction voltage cause by some servos on the market could activate the protection of the BEC. Unless 8.4V (or 12.1V if using 12V servo) is specifically required, we highly recommend the BEC voltage set to 7.2V (or 11.0V if using 12V servos) or below to avoid any issues with this possible servo issue. http://www.scorpionsystem.com/blog/?p=7173

If you have external flight system baery, then you can disable the BEC in programing.

1.1 ESC Connecons

2.0 Default Parameters / Inial Setup

2.1 Before you plug in

2.1.1 2.1.2 2.1.3 2.1.4
2.1.5

Ensure that your ESC is connected to the proper channel on your receiver.
Ensure your baery connectors are mounted properly, and that you plug in with the correct polarity.
Ensure you throle channel is programmed correctly in your radio and you have a clear understanding of all throle hold, endpoints, signal direcons.
When you plug in the ESC, you should expect a “Spark” upon contact. The BEC / RX system will not immediately boot up as the ESC runs system safety checks prior to powering on. The BEC and ESC will only power on aer a few seconds.
When ESC powers on it will beep the motor and flash the LED on the side with the “Power on Sound” (POS)
– Power on Sound spells “Voltage” in Morse Code

2.2 Default Parameters

2.2.1

Please note the Tribunus III ESC’s come with a default Helicopter setup out of the box.

2.2.2

If desired you can quickly change to Default Airplane Mode using sck programing. See Secon 2.4 for more informaon.

Heli Default

Airplane Default

Mode:

Un-stored Helicopter Governor

Airplane Mode

BEC:

5.0 Volts

Communicaon

Protocol:

VBAR Telemetry Protocol Unsolicited Telemetry Mode

**Full list of detailed Settings / Protection Setting are listed on the following pages.**

2.2.3

If you are using Mikado VBAR control radio you can skip many of the below steps, (including Throle Calibraon) and program completely the ESC from your VBC.

2.3 Throle Calibraon

You MUST perform throle range calibraon before the first use of the ESC, except if you are using VBAR external governor mode. Remove propeller/pinion from motor or back of pinion from main gear while performing inial throle range calibraon. NOTE for Spektrum Users You may need to power your RX separately with a separate RX baery during these calibraon steps. This is because Spektrum RX output first the “fail safe” seng prior to binding, which can interfere with the calibraon process.

2.3.1 2.3.2

Turn on transmier and power up receiver, then set throle to maximum posion be sure that your throle curve is set at 0% minimum throle and 100% at maximum throle.
Connect the baery to the ESC. Aer few seconds you will hear one beep. Now move your throle to the lowest posion within a 3 second me period, then you will hear two beeps, and POS Morse code come from the motor. This mean your calibraon is done. You only need to do this once as throle range will be stored in the memory of the speed controller. You can reset the throle range by performing steps 2.3.1 to 2.3.2 again.

2.3.3

If using Airplane with Reverse mode, there is addional Calibraon Steps. Please see detailed instrucons in Secon 18.

2.4 Basic Sck Programing – Airplane Default Mode vs. Helicopter Default Mode

While it is advised to download and use our SPROTO PC / Android App for programing. We now have enabled the opon to quickly switch between “Default Airplane Mode” and “Default Helicopter Mode” using simple sck programming.

2.4.1 2.4.2
2.4.3

Remove the propeller, or pinion from your motor.
Turn on transmier and power up your receiver (see note above if using Spektrum), then set throle to maximum posion and be sure that your throle curve is set at 0% minimum throle and 100% at maximum throle.
Switching to Default Airplane Mode Plug the ESC in at full throle. Leave the throle sck at 100% unl you hear 2 connuous beeps, then lower the throle sck down to 0% within a 3 second me period then you will hear two beeps, and POS Morse code come from the motor, this mean your ESC has swapped to Airplane Mode.

2.4.4

Switching to Default Helicopter Mode – Plug the ESC in at full throle. Leave the throle sck at 100% unl you hear 3 connuous beeps, then lower the throle sck down to 0% within a 3 second me period then you will hear two beeps, and POS Morse code come from the motor, this mean your ESC
has swapped to Helicopter Mode.

3.0 Download / Registraon of SPROTO PC SOFTWARE
– Sproto is our program which supports all the Tribunus ESCs. Aer downloading the program and installing it, you need to register an account for firmware updates and configuring the sengs.
– Make sure you download the latest version of Sproto from hps://sproto.net/#/
– If you do no already have a SPROTO Account, then please create one by Clicking the “Register” buon.
– NOTE: This is NOT the same account from www.scorpionsystem.com. You need a separate Sproto account.
– Aer Clicking the Register buon, you will be able to set your User name, Email, Language, and Password.
– Aer clicking “Register” we will send a oneme pass code to your listed email. Please wait a few minutes, and check your email for the code. Be sure to check your spam folder if you do not find the code in your inbox. If you do not receive the code, please try again, and if sll you cannot receive the code, then please email us at support@spihk.com
– NOTE : Some email servers block emails from our server. There is nothing which we can do about this. Please try another email, or email us at support@spihk.com and we can help you create and account manually.

4.1 Download the Prolific USB Driver and/ or CH341SER Driver

The drivers SHOULD automacally download when you connect the ESC to the PC via the USB-C cable. Make sure you PC is connected to the internet so the drivers may
download, and you may need to wait some me for the installaon to complete automacally.

VLINK II CH341 Note
With VLINK II CH341 driver you will need to download the zip file, then click into CH341SER -> SETUP.exe, then follow the on-screen instrucons.

If the drivers do not automacally install you can check the below steps for manual installaon.
Click TOOLS-> EXTERNAL TOOLS -> then look to see if you have the 2 x drivers installed, signified by the Green Check mark. If not installed, you will need to click on the Blue Hyperlink, and install them.

– The Prolific USB Driver is needed if you will connect with the USB cable to your ESC.
– The Vlink II CH341 Driver is needed if you will use the VlinII cable + Diode Cable.
The Prolific USB driver is directly a .exe file which will automacally open and run.

4.2 (Oponal) Download the Tribunus Configurator from Google Play Store
If you use an OTG converter cable, then you can connect the Tribunus to your Android Device and program the ESC from the Tribunus Configurator App from the Google Play Store. Open the App, and when you plug in the ESC to the device (with OTG cable) then the ESC will automacally connect to the app. The app follows the same structure as the Sproto PC program and can be navigated easily.
hps://play.google.com/store/apps/details?id=en.scorpion.tribunusapp3&hl=en&gl=US

4.0 Connecng your ESC for Programing

5.0 SPROTO Connecon

5.1 Hook up your ESC using either a USB-C cable or VLink II Cable as shown in Secon 4.0
5.2 Open the SProto Program, and Launch the Tribunus III Configurator App by double clicking on it, or by single clicking, then clicking on the “Play” buon

5.4 If connecon does not work the first me, you may try to “Reload” the comport

5.3 Check for Successful connecon
5.5 If you do not have success with connecng the ESC, please check our
troubleshoong guide on in SECTION 17.
6.0 Wring Sengs to ESC {IMPORTANT}
NOTE : Anyme you change a parameter, the color of the feature will change from grey to green. Aer making adjustments you must “Upload” the sengs to the ESC. Click the “Upload” buon and then the ESC will restart, and then your sengs will be saved.

7.0 Main Sengs

Seng
A1
A2
A3 A4 A5 A6

Funcon
Device Name
Device mode*
BEC Voltage Rotaon Direcon Communicaon Protocol** Fan on Temperature***

Descripon
User has simple opon to “name” the ESC. Adjust which mode you will be using the ESC in.
(Heli Gov with re calculated maximum RPM / Heli Gov – with Prestored maximum RPM / VBAR PID / External PID / Airplane /Airplane with Reverse/ Boat) Set your BEC voltage
(5.0 / 6.2 / 7.2 / 8.4 V / 8.8V / 10.0V / 11.0V / 12.1V / OFF)
Note: If setting voltage above 8.4V you must be certain your flight control system and servos, along with all other accessories (fan etc.) can handle the higher voltages! You must check the check box and confirm to “unlock” the higher BEC voltage ranges. Adjust the direcon which your motor spins
(CW / CCW) Adjust which Telemetry Protocol you will be using
(Standard / Vbar / Jeti ex bus / Unsolicited Telemetry / Futaba) Adjust at which temperature the cooling fan will turn on

Mode
Heli gov – with recalculated Maximum RPM
Heli gov – with Prestored Maximum RPM
VBAR gov
External gov Airplane Mode Airplane with Reverse Mode

7.1 1B – Device Mode*
Descripon
Scorpion Internal Heli Gov Mode. While spooling up, ESC calculates predicted max RPM based on baery voltage / Motor Selecon. This is a “setup” mode useful for checking your gear rao / rpm to throle percentage raos. (RPM Value may change each time you spool up the model)
Autorotaon Bailout enabled aer complete spool up, then switch to 20%-30% throle. Switch to 0%-10% for normal spool up
Scorpion Internal Heli Gov Mode. On first spool up, ESC calculates and then locks the max rpm value. In subsequent flights, the RPM will spool to the same value each me relave to same throle %. The max rpm value can be manually adjusted in Parameter B9 – Governor Maximum RPM See secon 8.0 for more info.
Autorotaon Bailout enabled aer complete spool up, then switch to 20%-30% throle. Switch to 0%-10% for normal spool up
Mode designed when using VBAR Gov mode. While in this mode, the ESC will have so start funcon, but will rely on VBAR governor to control the RPM. (be sure the slave wire is plugged into the RPM port of the Vbar NEO, so that VBAR can properly read the RPM signal) Mode designed when using other External Gov Systems (Futaba / Je / etc) while in this mode, the ESC will have so start funcon, but will rely on the external governor to control the RPM. (be sure the slave wire is plugged into the RPM port of your device, so that device can properly read the RPM signal, be sure to remove vcc/ground from slave wire if using Futaba CGY760!)
Airplane Mode provides linear throle response and fast acceleraon Airplane with Reverse Mode provides linear throle response and fast acceleraon with opon for reversing funcon on motor direcon. See Secon 18, for specific calibraon process for this mode

Boat Mode

Boat Mode provides linear throle response and fast acceleraon with a shortened inializaon me period aer plugging in baery power

7.2 1E – Communicaon Protocol**
Communicaon Protocol has to do with the data which comes out of the PC port. Select which protocol you wish to use depending on you receiver / control unit. Cabling goes between the PC port of the ESC to the predetermined data port on your RX or Control Unit. The specific cable which is used is dependent on the system which you use. See our individual guides for specific telemetry use cases.

Mode Standard VBAR Je Ex Bus Unsolicited*

Descripon

Required Cable

No telemetry data is sent when in this

mode. Select it if no intenon of using

N/A

telemetry.

2-way communicaon protocol between Tribunus ESC and Mikado
VBAR Control Radio System. This allow the ESC sengs to be programmed via the remote control, as well as display
all telemetry sengs in real me.

Vbar Control / Scorpion ESC
Cable

Telemetry mode designed to work with Je Ex Bus System

“Patch Cable” (male to male
servo extension)

Unsolicited Telemetry mode. Designed to make telemetry protocol accessible via UART signal, to those who wish to implement it. Such as with an MCU, or ready-made products such as JLOG, Brain FBL, Spektrum (w/ adaptor), etc.

Cabling
depends on use case / situaon.

Futaba SBUS 2

Telemetry mode designed to work
with Futaba SBUS 2. Be sure your Futaba Radio supports Scorpion Telemetry protocol.

“DIY Patch Cable” (male to male servo extension w/ vcc (+)
wire removed)

7.2.1 Unsolicited Telemetry Mode Overview
– Unsolicited Telemetry mode is our own protocol which is designed to make Telemetry Data accessible over UART signal to those who wish to implement our protocol.
– It can be used by developers who wish to access telemetry data via their own Radio / UAV system.
– It is used with various Telemetry Converter Systems, and also with various exisng radio systems which have implemented our protocol for you already.

IMPORTANT NOTE FOR PROGRAMING WHEN USING UNSOLICITED TELEMETRY MODE While in Unsolicited Telemetry mode, you can only connect to the PC soware via the VLINK II Cable + Diode Cable for the first 5 seconds aer powering on the ESC. So, you must “connect” to sproto within 5 seconds of powering on the ESC. Aer these 5 seconds, the ESC stops looking for USB connecons, and starts only sending Telemetry data. If you do not connect within the first 5 seconds, then you will need to power off, and try again.

7.2.2 Unsolicited Telemetry Use Cases

Spektrum XBUS Telemetry Protocol
Telemetry Converter Systems

Spectrum Telemetry Specificaon uses a different protocol then us for their telemetry system. To make Scorpion Telemetry Data accessible on your Spectrum Remote Control, we have created the Scorpion Spectrum X-Bus Telemetry Cable. This cable converts our Unsolicited Telem Protocol into Spectrum Telemetry Protocol. Simply select Unsolicited Telem Mode while seng up your Tribunus ESC, and then connect the Scorpion Spectrum X-Bus Telemetry Cable from the PC port of your ESC to the X.BUS port of your Telemetry enabled Spektrum RX and then follow Spektrum Telemetry instrucons to setup your radio. Some 3rd party companies have implemented our Telemetry protocol into their own products, which can convert the telemetry to various other protocols and system. Such as JLOG, RCLightSystems, etc.

Telemetry to Microcontroller

Our Telemetry protocol can be implemented easily into your own radio / UAV system with any number of microcontrollers

Some radio / FBL system has already implemented our protocol into

Other Radio / FBL Systems

their system which allows you to connect directly. Be sure to check with your radio / l manufacture to see if they support Scorpion Unsolicited

Telem.

For more informaon about our Unsolicited Telemetry Protocol

please email us at support@spihk.com

Parameter

Name

8.0 Heli Sengs

So Start speed

Helicopter sengs are only adjustable when using Scorpion’s Internal Helicopter Gov with Prestored / Recalculated values and external gov mode.
If in Vbar Mode, or airplane / other mode, you will not have access to the Heli Parameters. You can either click the default presets, So/ Medium / Fast (Hard), or you may type in a specific value which you prefer.

Acceleraon speed

Bailout Acceleraon speed

Governor Preset Type

Autorotaon Bailout enabled aer complete spool up, then switch to 20%-30% throle.

Switch to 0%-10% for normal spool up.

Be sure to save the sengs to your ESC aer adjustment.

P gain

Note: Tribunus has dynamic ming and frequency, so there is not user adjustable Timing or Frequency adjustment. The ESC sets it automacally and dynamically depending on the motor load and rpm.

I gain

Default Value 10,000ms
8,000ms
2,000ms

Descripon
Adjusts the acceleraon speed of the so start for first 0%-30% of power level
Adjusts the acceleraon speed of the so start between 30% – set throle % of your throle curve. This value also effects the speed of rpm
change when switching between different throle % values.
Adjust the speed of the autorotaon bailout funcon Autorotaon Bailout enabled aer complete spool up, then switch to
20%-30% throle. Switch to 0%-10% for normal spool up

Medium Adjust the Governor Sensivity Presets (So / Medium / Hard / Custom)

Adjusts the inial response of the headpseed governor.

1.0

To High Value = Overspeed on inial collecve/ cyclic pitch movements

To Low Value = RPM Drop on inial collecve / cyclic pitch movement

Adjust the holding power of the headspeed governor.

To High Value = Overspeed on sustained collecve / cyclic pitch

movements

2.0

To Low Value = RPM Drop on sustained collecve / cyclic pitch

movements*

(RPM drop in this situation could also be a result of bad gearing / not powerful enough motor / battery)

D gain

0.45

Non – Adjustable

This funcon is designed to help smoothen the torque changes from

governor response. Overly aggressive governor response may cause your

I gain Correcon

Enabled

tail rotor to kick out under rapid pitch / torque changes. Enabled Use this mode when doing 3d flying

Disabled Use this mode when you require maximum power regardless

of the governor effect on other aspects of flight (example speed flying)

Calculated Maximum governable rpm of the system.

The displayed value depends on which sengs you have set in Pole Pairs

(5B), and Gear Rao (5A).

If you have Gear rao / Pole Pairs set to 1 (default) it will show electrical

rpms of the motor (Pole Pairs * RPM).

If you have pole pairs set, it will show Motor RPM

If you have pole pairs, and gear rao set, it will show main rotor RPM

If using “Heli Gov with recalculated maximum RPM”, this value will

Governor Maximum RPM

0 / max rpm

reset to zero aer each power off. Once you run the motor, then the calculated maximum RPM of the model will be set here.

Each me you spool up the model, you would have a slightly different

RPM depending on the inial voltage of the baery.

If using “Heli Gov – with prestored maximum RPM”, this value will set

itself to the calculated maximum RPM of the model on first spool up.

RPM will be the same value relave to your throle % value each flight.

Note: Some motor designs will cause the Tribunus to calculate a wrongly

predicted max RPM value. In this case, if the user wants to override the

Tribunus calculaon, you may enter your desired max RPM manually.

9.0 Airplane / Airplane with Reverse / Boat Sengs

The Tab for this page will change depending on the Device Mode which you have selected in Adjustment A2. If Airplane mode is selected, then “Plane” tab will appear, same respecvely for Airplane with Reverse Mode, and Boat Mode. All 3 mode have the same parameters. You can either click the default presets, So/ Medium / Fast, or you may type in a specific value which you prefer.
Be sure to SAVE the sengs to your ESC aer adjustment.

Parameter
C1
C2

Name Drag Brake Motor Acceleraon
PWM Mode

Default Value
0% 350ms
Complimentary

Descripon Sets the intensity of the “brake” funcon of the ESC when throle signal is set to 0%. Note : In complimentary mode, there will be always a braking effect in flight due to the regenerave freewheeling effect even if you set 0% brake
force.
Sets the acceleraon speed of the motor. NOTE : Depending on the size / weight of your prop, seng a too low Motor Acceleraon value (too fast acceleraon) may cause exponenally
high phase current values which can damage you ESC and VOID YOUR WARRANTY. Please follow the recommended Motor Acceleraon ranges depending on your Propeller size.
100ms-250ms: not recommended 250ms-350ms: 18″ prop size and smaller
350ms – 500ms: 18″ – 24″ prop size 500ms + : 24″ prop size and larger
PWM Mode manages different ways in which the esc handles generated current on RPM deceleraon. Complimentary (recommend) – This is a paral Freewheeling Mode. On RPM deceleraon, generate voltage is directed back into the baery. This
mode has a mild brake effect on RPM deceleraon
Regular – This mode dissipates generated voltage through resistors. It is only recommended when using a power supply rather than a baery to power the ESC.

NOTE: It is dangerous to power your ESC with a Power Supply! If you do this, you must take additional precautions! See note in section 16.0

Note: Tribunus has dynamic Timing and Frequency, so there is not user adjustable Timing or Frequency adjustment. The ESC sets it automacally and dynamically depending on the motor load and RPM.

10.0 Protecon Sengs
Scorpion protecon features follow the following procedure. If a value surpasses a protecon limit, then the ESC will slowly start to limit the power output of the ESC down to the Power % which is set by D5 Cut off Power Level, over a period of me which is set by D1 Cut off Delay. If during this me period the value comes below the protecon limit, then the power will be restored. If the value does not come below the protecon limit, then the ESC will connue to limit power down to the Power % which is set by D5 Cut off Power Level. If at any me aer this, value goes below the protecon limit, then power will be restored.
Cut off Limit is not a fixed value %. It is a mulplicaon to requested power. So if cut off limit is set to 70%, but you are flying only at 50% throle, then you will sll be aware of the protecon limit because your 50% requested power would actually be (50% * 0.70 = ) 35%.

Parameter
D1 D2
D3 D4 D5 D6

Name
Cut off delay
Minimum voltage
Maximum temperature
Maximum Current
Cutoff Power Level
Baery Capacity Cutoff

Default Value
5000ms
8.0V
85C (depends
on ESC size) 70%
0.00Ah

Descripon
When a value goes over the protecon limit, the ESC will slowly start to reduce the power output % to the cut off limit. This value adjusts how long this power reducon period takes.
(Unit is milliseconds. 5000ms = 5 seconds)
Protects against over discharging your baery. Sets the minimum total baery voltage allowed
before the ESC engages the protecons. NOTE : When setting this value, be sure to take
into account that during flight your battery voltage will sag under load. We recommend to not set a minimum voltage protection higher
than (3.0V * # of cells)
Protects the ESC from over temperature. NOTE: While the components are rated for temperatures above 100C, consistent use at
high temperature increases the rate of degradation. Be sure to use one of our hi-speed
cooling fans, or change ESC location to get better natural airflow if your ESC is near the
Temperature limit consistently.
Limits the maximum baery current of the ESC
*See detailed explanaon on next page*
When a protecon is engaged, the power is slowly reduced. This value adjusts to which limit
the power can be reduced to. Cut off limit is not a fixed % value. It is a
mulplicaon of requested power. Oponal protecon to signal to user when his baery is discharged. Set the value of Amps (Ah*1000 = mah) you wish to use. When you
reach that limit, then the ESC will reduce the power signifying to you it is me to land.
NOTE: If you do not wish to use this funcon, set 0.00 and it will disable the funcon.

11.1 Maximum Current Protecon Algorithm
For Tribunus III series we have implemented a new protecon algorithm for Maximum Current. To understand the purpose of this you must first understand the important difference between Baery Current (A), and Phase Current (A). When an ESC drives a motor, the MOSFETS turn ON and OFF power to the different phases of the motor in a specific sequence to rotate the motor. At 100% power, this means that the MOSFET is passing 100% of the baery voltage is to the phases of the motor. For the sake of this example we can say, if you are running 50% power, then this means that the MOSFET is only passing 50% of baery voltage to the phases of the motor.

Since we know Was = Voltage * Amps, or in other words Amps = Was / Voltage then we can calculate the following examples.

Ex. 1 If your airplane / helicopter is properly set up, with a correct sized propeller / gear rao. With a 6s Baery (22.2V), you run 100% throle, and you motor is pulling 100A under load, then we can calculate the following.

Baery Current Phase Current –

100A x 22.2V (baery voltage) = 2,220 Was 100A x 22.2V (MOSFET voltage) = 2,220 Was

Ex 2 If your airplane / helicopter is improperly setup, with too large of propeller / wrong gear rao. With 6s Baery (22.2V), you run only 50% throle, and you’re sll pulling 100A under load. Keep in mind, since we are at 50% throle, this means the MOSFETS are only sending 50% of the voltage to the motor phases. Then we can calculate the following.

Baery Current Phase Current –

2,200 Was / 22.2V = 100A 2,200 Was / 11.1V (MOSFET voltage at 50%) = 200A

As you can see, even though the baery current is the same, the phase current is much higher. When running paral throle percentages, the phase currents can rise exponenally. Higher phase currents cause more efficiency losses, and higher temperatures not to menon can quickly and easily fail due to excessive load. This is why there is such importance on proper gear rao / propeller setup.

To combat users who run our ESC product with improper propeller selecon / gear raos we have implemented the following Maximum Current Protecons.
– Maximum Current Protecon now addionally regulates calculated PHASE CURRENT, and not only BATTERY CURRENT

The noceable effect of this, is that now in terms of baery current, your “maximum current” value can only be achieved when running at 100% throle. If you are running paral throle %, with very high load, you may noce that your “baery current” may begin to be regulated far before your “maximum current” value is reached. This is because due to your paral throle %, the phase current is already exceeding the Current Limit, and therefore the ESC is regulang the power output.

Another effect (in extreme cases) could be you may note slower acceleraon. If your acceleraon is set to fast / your propeller is very heavy, the phase current to spool up the propeller may exceed the phase current limit, which would enable the protecon and effecvely “slow down” your throle acceleraon to a rate which does not cause the phase currents to exceed the set limit.

If you noce your power is excessively regulated due to this fact, be sure to check your gear rao / propeller / power system setup to make sure that it is operang within a healthy and reasonable manner. NOTE: Over Current protecon are a feature to protect against immediate failure, however, constantly pung the ESC above its connuous current rang and pushing it oen to, and past, the peak current rang (causing the ESC to acvate the protecons) places addional stress on the ESC, and may lead to premature component degradaon and possibly even failure. Be sure your ESC is appropriately sized for your intended applicaon. If you see in your log “CURR” warning constantly, then it means the over current protecons are being acvated, and your ESC is on the limit of its capability and your model setup should be adjusted.

11.0 Configuraon Sengs

Configuraon sengs DO NOT EFFECT how the ESC drives the motor. They are only calibraons, personal sengs, and some other sengs. There is no configuraon adjustment in the ESC which can make the ESC drive the motor improperly.
Disable d

Parameter E1

Name Sound Volume

Gear Rao

Pole Pairs

Current

Measurement

Adjustment

Maximum RPM

Detecon

Correcon

Throle Calibraon MIN

Throle Calibraon Zero

Throle Calibraon MAX

Demagnezaon

Protecon Safety

Margin

E10

External Control

E11

Throle Value

Default Value 100 1.00
1 0% 0% 1.07ms
1.07ms
1.93ms
25% Disabled
0%

Descripon
Set the volume of the POS and error codes 0 = off / 100 = full volume
Set the Gear Rao used in your power system. NOTE: This does not affect how the ESC drive the motor. This only effect
how the RPM is displayed in the Log.
Set the # of pole pairs your motor has. Ex. If you have a 10 pole motor, then you should set 5 pole pairs NOTE: This does not affect how the ESC drive the motor. This only effect
how the RPM is displayed in the Log.
Tribunus ESC’s can measure the Current (Amps) your ESC pulls. This data is used for the telemetry and to calculate the MAH used during flight.
However, during production there may be tolerance in this measurement, and each ESC may measure slightly different. Adjust this value to compensate for tolerance on the displayed current measuring.
In the Recalculated Gov mode (and on the first spool up of Prestored Gov mode), the ESC auto calculates maximum RPM. If this calculaon is
wrong, you can adjust the % change to calculated Maximum RPM of the governor.
If using the “Airplane Mode with Reverse” mode, this value adjusts the throle signal value for -100% “reverse” throle.
If user does the “throttle calibration” via the stick programing, this value will automatically set itself. However, user may choose to manually set it.
This Value adjusts what the ESC perceives is “off” throle posion. Different transmier brand may have different values for this point. If the Transmier point is higher than the ESC point, then the ESC will not arm. If user does the “throttle calibration” via the stick programing, this value will automatically set itself. However, user may choose to manually set it.
This value adjusts what the ESC perceives is “max throle” posion. Different transmier brand may have different values for this point. If the Transmier point is lower than the ESC point, then it will not go to 100%
throle. If user does the “throttle calibration” via the stick programing, this value will automatically set itself. However, user may choose to manually set it.
Some motors have demagnezaon problems which prohibit the ESC from driving them past a certain Current amount. Tribunus ESC have a protecon against this which reduce power if the motor is in this state. This value adjusts the Safety margin of the demagnezaon protecon.
NOTE: Unless specifically needed, leave this value at 25%! Oponal seng to enable or disable the ability to turn on the motor from
the SPROTO app using the below value E11 to adjust the throle % If the above value E10 is set to enabled, you can use this adjustment to
run the motor via the sproto app.

12.0 Firmware
***You must be logged into your SPROTO account to be able to view / update the ESC firmware***
It is very important to keep your Tribunus ESC up to date! As me goes on, we may improve the drive algorithm, protecons, funcon, or fix bugs in the ESC firmware. Also, as other Transmier update their soware’s, we may need to adjust our Firmware to adjust to their updated telemetry protocols.
NOTE: When you update the firmware, it will over write your exisng setup parameters. This is a safety funcon to ensure no value gets set erroneously during the update process.
You should SAVE your sengs PRIOR to doing the Firmware update if you wish to keep your previous sengs. Learn how to save your sengs in Secon 15 of this manual.

13.0 Logs
Tribunus ESCs have a very good data logging funcon. Data is logged every ~0.2 seconds while running, and every ~1.1 second while idle. This data can be accessed in real me using our telemetry funcons, but it can also be downloaded / viewed / saved / exported, using our SPROTO program. The log data is stored on the ESC. When the memory is full it simply begins over wring previous data which was stored. The log can record several flights worth of data. NOTE: In default setting, the RPM which is shown is the electrical RPM of the ESC. If you wish to show the actual prop / disc rpm, then make sure in your configuration tab you enter the proper pole pairs / gear ratio values prior to Loading the log data.
13.1 How to access logs
Step 1: Connect your ESC to Sproto Program
Step 2: Click into the Log Chart tab

Step 3: Update the Log
Step 4: Wait for the log to upload to Sproto from the ESC
(may take some time depending on how full the log is)

Update Log Erase Log IMPORT
EXPORT Save as CSV

Due to the amount of log data stored in the ESC, the log is not automacally downloaded when you connect the ESC. If you wish to view the log data, then while the ESC is connected to Sproto, you must click here, and Download the log data from the ESC.
Delete the log data from the ESC (not required to do so) If you wish to view a previously exported log, you can use the “IMPORT” funcon to load in a previous exported log (.tgb format) for viewing / comparison purposes.
NOTE: ESC does not need to be connected for this. If you wish to save, or send the log data, then you can do so with the EXPORT funcon. Click here, and then save the data to your PC in the .tgb file format. If you wish to use the data outside of our Sproto program, then you may use this funcon to export the log data to .CSV format.

14.0 Filtering the Log Data
You can check / uncheck the checkmark next to the data to choose to view or not view the data in the log chart. This feature allows you to filter the data and view only the informaon which you wish.

14.2 Viewing the data in Table Format
You have the opon to view the log data in Table format vs Chart format. This opon lets you see more clearly the exact measured values at each specific me stamp. Addionally, in this Table Format, you can see Error codes which are flagged by the ESC.

Note: The “time” stamp of the log data in the chart, and table format correlate. So, if you note the time stamps of an event in the chart log, then you can find the exact moment in the table format using the time stamp.
14.1 Navigate the Log Data
To zoom in on a secon of the log, you can simply click and drag from the top le, to the boom right of the secon which you want to view. This will zoom the log to the secon you wish to view. You can then use the right mouse click, to move the move around the log, and the mouse scroll wheel to zoom in and out. To zoom out, you can also drag from the boom right to the top le.

Note: You can also easily highlight columns of log data in the “Table” Form and use these to paste into external programs such as Excel / Google Sheets, etc.

15.0 Seng Files
Users can save current ESC sengs into the SPROTO program, and re load them into other ESC / send the setup file if needed.

15.1 Import Sengs directly from PC to ESC
To directly import a previously saved .json file to your ESC. Click into any of the sengs tabs, and look for the “IMPORT” buon. Then select the .json file and load it.
Note: Loading the .json file only populates the sengs in the sproto program. Aer checking sengs, you must click “upload” to send them to the ESC.

15.2 Export Sengs directly from ESC to PC
To directly export your seng file to the PC. Click into any of the sengs tabs, and look for the “EXPORT” buon. Then set a file name, and save the .json file to you PC.

Create
LOAD EXPORT REMOVE

Enter a file name, and click Create to save the current ESC sengs onto the SPROTO APP which can be viewed in the list of “Saved Sengs” Load the setup file parameters into the Sproto program. NOTE: Loading the parameters, only changes the value in Sproto, but does NOT send them to the ESC. If you wish to send these changes values to the ESC, you must click to one of the other setup tabs, inspect the values, then click “Upload” to send the settings to the ESC. Save the seng file onto your PC (.json file)
Remove a Saved Seng, from the list shown in Saved Seng tab of Sproto.

16.0 Instruconal Guide for using Tribunus ESC’s with Power Supply or Long Power input cable in flight or for bench tesng / endurance tesng
Scorpion Tribunus ESC’s are designed for use in Flight Applicaons. This implies that in the stock configuraon, the Tribunus ESC’s are designed to work only with a form of baery as power input, and reasonably short length of baery wires.
Tribunus ESC’s are NOT designed to be used with POWER SUPPLIES, or exceponally LONG POWER INPUT cables, without addional precauons. Using the Tribunus ESC’s in these situaons, without the addional required precauons may damage your ESC and will VOID THE WARRANTY. See specific details below.
Using the Tribunus ESC’s with Power Supply for bench tesng
Using a power supply to power an ESC while spinning a motor is an exceponally bad idea unless proper precauons are taken. In many situaons, BLDC motors act as generators which can create current which gets fed back to the ESC. In a normal situaon with a baery, this generated current gets absorbed by the baery. However, most power supplies (even high-quality ones) do not have the same capability to absorb, or dissipate this generated current. The result is that the power supply can generate a very high, instantaneous, voltage spike. If the voltage spike is above the capability of the ESC components, then it will directly damage your ESC.
If you are required to power your Tribunus ESC with a power supply, then you must take the necessary precauons or else you will VOID your warranty!
In order to stabilize the voltage and protect the ESC from damage when used in this situaon, you must have a way to absorb generated current. This can be either a very large, high voltage, and high capacitance capacitor, or even a lipo baery which is connected in line to the power supply (ensure power supply voltage, is not higher than the baery voltage). In the case of capacitors, the amount of capacitance required, depends on your exact use case, so please take this into your calculaons prior to tesng using a power supply. If you are unsure and unable to calculate this, then we recommend only that you simply use a baery to power your ESC.
Using the Tribunus ESC’s on a test stand or even in flight with very long power input cables
Over long length of wires, Voltage will fluctuate / sag. If you are using longer then stock length power input cables from your baery to the ESC (in the case of a bench test stand where the motor / ESC is far away from the baery, or even in large aircra where the baery is located far away from the ESC), and pulling high current loads, then this can cause the voltage to sag and become unstable. This unstable voltage is very hard on the ESC components and likely will lead to ESC failure.
If you are required to power your Tribunus ESC with very long power input cables, then you must take the necessary precauon or else you will VOID your warranty!
In order to stabilize the voltage and protect the ESC from damage when used in this situaon, you will need to add addional capacitors before the ESC. We recommend to solder 1 x Scorpion 80V 1880UF Capacitor board for each 1M length of wire. Doing this will provide stable voltage along the length of the wire and protect your ESC from damage.
Scorpion 80V 1880uF Capacitor board
hps://www.scorpionsystem.com/catalog/speed_controllers/accessories_2/cap_boards_filters/80V_188uf_cap_mount/
If you have addional quesons about this topic, and require more informaon, then please do not hesitate to contact us at
support@spihk.com

17.0 Troubleshoong Tips

1. ESC will not connect to SPROTO
– Make sure you PC is connected to the internet so that the drivers may automacally download from the internet. This may take some me, so be sure to wait sufficient me and check the driver install status.
– If the drivers do not download automacally, be sure you have the proper driver downloaded and saved into the proper file locaon. Check Secon 4.1 for more details on the best way to download your drivers.
– If using USB cable to connect, be sure that it is a “Data” cable and not only a “charging” cable. If It is a charging only cable then it will not work.
– If using a laptop or PC which is Bluetooth enabled, please disable Bluetooth funcon while trying to connect the ESC to Sproto. Somemes the PC can try to connect via a Bluetooth comport, rather than the USB comport.
– Be sure you are using the Tribunus III Configurator, and not the Tribunus I or II Configurator. Check Secon 6.0 for more details.
– Make sure your USB cable is not worn out with intermient connecon. – Try power cycling your PC. – If using the Vlink II cable, then be sure that you are also using the “diode cable” between the
Vlink II cable, and the ESC. A normal male to male servo extension will NOT work, and may damage your ESC and/or PC USB ports. – If using Vlink II cable, be sure you are applying baery power when trying to connect to the PC. – If using the Vlink II cable, make sure all connecons are made correctly! Check the connecon orientaon of the vlink II cable into the diode adaptor, and also check to make sure your cable it plugged correctly into the PC port of your ESC. – If you have previously selected Unsolicited telemetry mode, then please note the following important point. The ESC will only be looking for USB connecon for the first 5 seconds of powering on. Aer these seconds, it will switch to sending telemetry data, and will no longer connect to the USB port of your PC. Therefore, connecon to the SPROTO program, must happen within the first 3-5 seconds of powering on your ESC!
2. I created an account on SPROTO, but did not receive the confirmaon code by email
– Be sure to check your junk / spam folder. – Some email servers, block the emails from our server. There is nothing we can do about this.
If the confirmaon code connually does not arrive, then please email us at support@spihk.com and we can help you log in. – Try to use a different email address from a different email provider.
3. When I try to register and account on Sproto, there is no “Register” buon and I can not create or log into my account
– Some PC have issue with the operang language which is set on your PC. – Change your operang language seng of your PC to English, and aempt again.

4. When using Vbar Gov, my RPM does not change and is only at a fixed value
– The RPM signal is passed through the signal wire of the salve BEC cable. – Be sure to plug the Slave cable into the RPM port, of your VBAR NEO. – Do NOT plug into the “sensor port”.
5. My Throle Calibraon does not work
– Some radio systems (specifically Spektrum), first output a “failsafe signal” prior to binding, which may interfere with the calibraon process and require addional steps. Check Secon 2.3 for more informaon.
– Be sure to check that your cabling is proper, and that the MASTER BEC cable, is going to your throle port of your RX.
– Be sure that your throle direcon is set correctly so low throle is ~1000 us, and high throle is ~2000us. Specifically, with Futaba, you may need to reverse your throle channel direcon.
– Be sure you do not have a throle hold enabled when trying to do the calibraon.
6. My ESC keeps beeping aer the power on sound
– Be sure to have done the throle calibraon as explained in Secon 2.3. – Double check your connecons to make sure the MASTER BEC cable is plugging into the
Throle Channel Port of your RX.
7. My motor won’t spin even if I raise the throle %
– The ESC won’t allow the motor to spin unless it first sees 0% throle during inializaon. Be sure your throle is correctly calibrated as explained in Secon 2.3.
– In heli mode, the motor will not spin unl the throle percentage reached above 30% signal. Be sure you raise the throle % high enough to start the motor spinning in this mode.
– Be sure to check the 3 x phase connecons and ensure no issue with your soldering or connectors.
– The ESC may not run if the USB cable was plugged in during inializaon. Please unplug the USB cable during inializaon. You can plug it back in aer the ESC has inialized.
– The ESC will not spin if protecon funcons are acve. Check the log to ensure no protecons are currently acvated.
8. My ESC runs hot / keeps going into over temperature protecon mode
– Check your ESC log, and ensure your maximum amp peaks are not higher than the ESC is rated for.
– Check your gear rao / propeller choice, to make sure that you are not excessively loading the power system at low throle percentages. This causes high phase current peaks, and may contribute to over temperature problems. More informaon about this topic in Secon 11.1.
– Check your cooling and airflow to the ESC, and be sure to remove any straps or obstrucons blocking the cooling fins.
– Be sure to use one of our Hi-speed cooling fans to your ESC.

9. Towards full power, my rpm seems to cut down drascally or be inconsistent
– Check your Log to ensure you are not pulling to many amps which is enabling the overcurrent protecons of the ESC.
– Check your Log to ensure your baery voltage is not dropping excessively signaling a bad baery, or weak connecon.
– Some high power/ high inductance motors, or motors with cheap quality materials, have prolonged demagnezaon me periods which would lead to desynchronizaon. In these situaons, to prevent desync, Tribunus limits power. Check your propeller / gear rao to ensure your motor is operang within its limits. Try a smaller prop, or shallower gear rao.
10. During / at the end of my flight, the RPM / Power cuts down to a lower power amount
– This likely is caused by the Protecons being acvated. Be sure to check the log to ensure no protecons are being acvated such as over temp, or baery capacity protecon. (Secon 10.0 for more informaon).
11. My ESC keeps shung down while flying
– There is no funcon of the Tribunus ESC which will “hard cut” the motor during flight. If the motor stops in flight it is likely caused by an external factor.
– Check your motor and ESC phase connecons. Ensure proper soldering. NOTE: That motor phase wires cannot be shortened! There is an enamel coang on the motor windings, which prevent solid soldering connecon to be made even if it appears to be well soldered. If you have an inconsistent soldering connecon, then it will cause the motor to stop spinning.
– Check your baery connectors for proper soldering. – Check your BEC cables to ensure no cuts in the wires, or disconnecon issues. – Check your mechanics to ensure no issues with your drive train (one way bearing, loose prop,
etc).
12. The capacity put back in my baery aer charging does not match the amount the ESC telemetry says I used
– The capacity measurement of a Tribunus ESC is subject to quite a wide producon tolerance in regards to the Capacity measuring.
– You can adjust the current measurement up to +/- 30% in Sproto Program under configuraon tab / (E4) Current Measurement Adjustment.
13. The RPM displayed is not accurate
– Some radio systems do their own RPM calculaons in the radio. So, you must enter specific sengs in regard to the pole count / gear rao in order for the 2 systems to work together. Please check documentaon of your Radio / FBL system if this is needed.
– You must have the Pole Pair, and gear rao entered in SPROTO setup, in order for the RPM to display a proper value in the log data.
– Be sure you have entered proper gear rao. – Be sure you have entered pole “pairs” not pole count in Sproto Sengs.

14. Current displayed from the ESC compared to actual current (measured with an external amp meter) is different.
– The capacity measurement of a Tribunus ESC is subject to quite a wide producon tolerance in regards to the Capacity measuring.
– You can adjust the current sensivity gain up to +/- 30% in Sproto Program under configuraon tab / (E4) Current Measurement Adjustment.
15. My motor acceleraon seems slow (airplane mode) even if I lower the acceleraon runup me
– Quick motor acceleraons contribute to high phase currents, and prolonged de-mag me which may cause issues with your ESC.
– With our latest protecons, if the requested acceleraon is too fast for the ESC to safely handle, it will automacally slow down the acceleraon me to prevent further issue.
– Change your propeller to a smaller / lighter one.
16. My Governor RPM is very inconsistent and overshoots all the me (Heli mode)
– This can happen when you have a mismatch of sengs between the FBL system, and the Scorpion ESC. For example, if ESC is running Scorpion Internal Gov, and your FBL system is also running its own internal gov, then the 2 governors will fight against each other.
– Be sure your ESC and FBL unit, are both set so they are using compable gov modes.
17. Is it important to update my ESC Firmware?
– YES! Extremely Important!
18. On my VBAR Control Touch Radio, I get constant RED WARNING SCREEN which tell me to land immediately
– If you see this warning screen you should of course adhere to the warning and be sure to check your model setup, and also your ESC log for any protecon funcons being acvated.
– If the Warning connually happens at random, or when there is no actual protecon issue, then it can only happen if there is a mismatch in your TX / ESC firmware. Be sure to update both your TX and your ESC to the latest firmware and the problem should resolve itself.
19. My ESC jumps straight to full throle half way through the Slow Start Spool up (heli mode)
– Check value B9 Governor Maximum RPM and make sure an appropriate value is set. See Secon 8.0 for more details.
– Swap back to “Heli Gov with Recalculated Maximum RPM”, Upload sengs, then change again into “Heli Gov with Prestored Maximum RPM” and try to upload sengs again.
20. In Heli Governor Mode the maximum RPM is not high enough
– The maximum RPM of the governor system is auto calculated by the ESC. Depending on your motor or gear rao, the calculated maximum RPM may be lower (or higher) then what the desired maximum RPM could be.
– If you want to manually set the maximum RPM of the governor, you can set it with value B9 Gov maximum RPM.
– See secon 8.0 for more informaon.

21. My Tail kicks during spool up (Heli mode)
– Be sure you have properly set acceleraon values in the Heli Sengs. – Refer to Secon 8.0 for more informaon about the various acceleraon rates.
22. My ESC doesn’t work now, makes only a “click” noise over and over
– The clicking noise signifies that the ESC is aempng to power up, but detects some fault, so therefore shuts back down again to prevent further damage.
– This means likely your ESC or motor has some issue and will need to be serviced. – Please contact support@spihk.com or your local dealer for further assistance
23. The LED on my ESC / the BEC on my ESC doesn’t power on
– If the ESC detects a fault, it will stop itself from powering on to prevent further damage. – This means likely your ESC or motor has some issue and will need to be serviced. – Please contact support@spihk.com or your local dealer for further assistance.
24. My capacitors are puffed, or were damaged in a crash. Can I fly it?
– Absolutely not! The capacitors act as a buffer to help stabilize the voltage going to your ESC. Operang the ESC with damaged capacitors will cause further damage.
– Please contact support@spihk.com or your local dealer for further assistance.

25. When I move my servos quickly my BEC shuts down
– Some servos create massive voltage spikes when operang which can trip the BEC protecons. – See Secon 1.6 for more informaon.
26. How can I adjust my ESC Timing or Frequency?
– Note: Tribunus has dynamic ming and frequency, so there is no user adjustment. The ESC sets it automacally and dynamically depending on the motor rpm and load.
27. My cooling fan is always spinning and not temperature controlled
– Pay aenon to the plug orientaon. If you plug the fan with the ground wire toward the switch symbol, it will be temperature controlled. If you plug the ground wire towards the ground (-) symbol, the fan will be always on.

18.0 Special Notes
18.1 Airplane with Reverse Mode – Throle Calibraon

In Airplane with Reverse Mode the point at which the motor rpm direcon would reverse and the point which is for maximum “reverse” power needs to be set.

18.1.1 18.1.2 18.1.3

Be sure your ESC is set to “Airplane with Reverse Mode” in adjustment A2 Device Mode Turn on transmier and power up receiver, then set throle to maximum posion, be sure that your throle curve is set at 0% minimum throle and 100% at maximum throle. Connect the baery to the ESC. Aer few seconds you will hear one beep. Now move your throle to the lowest posion (full reverse power) within a 3 second me period, then you will hear two beeps, then raise your throle sck to the desired “zero” point (where the rpm direcon would reverse), and you will hear another beep and then the POS Morse code come from the motor. This mean your calibraon is done. You only need to do this once as throle range will be stored in the memory of the speed controller. You can reset the throle range by performing steps 18.1.1 to
18.1.3 again.

18.1.4 The endpoints and zero point can also be set manually in the configuraon tab in parameter E6 E8.

19.0 Importance of Proper Gearing (Helicopter use)
As a performance Brushless Motor and ESC manufacture, we feel it necessary to help teach our customers about the importance of proper gearing. Incorrect gearing can lead to higher baery and phase currents, which will degrade the performance of your model and may contribute to the premature failure of your Motor or ESC.
Most Helicopters rely on a Brushless motor, spinning very fast, and then use mechanical gearing to slow down the RPM to the disc. The motors have an opmal RPM, and amp loading range, and therefore need to be matched to the use case (disc size / desired RPM), by adjusng the motor kv, baery voltage, and pinion. If your gearing is out of range it can lead to a number of problems. A more basic example of this is to imagine going 20mph in your car while in 5th gear. Or vice versa, trying to go 70mph in 2nd gear. It will not work well!
If your gearing is to steep, then the motor is operang outside of its opmal efficiency rpm range, and addionally would lose its mechanical advantage. This would then require the motor to use what we call “brute amps” to try and push the motor through the load which you are using on it. This causes not only higher baery amps (which cause hoer running components), the compounding effect of this, is higher PHASE CURRENT peaks to your ESC. This is because since your motor is over geared, your ESC is having to drive the motor at paral throle percentages, which intern raises even further your phase current amount. Read secon 11.1 for more informaon.
You may use our Scorpion Head Speed Calculator App to help you calculate your opmal Disc RPM. This app takes into account efficiency losses and also takes into account “headroom” for the governor to operate. hps://www.scorpionsystem.com/files/download/Scoprion_headspeed_calc_1.0.zip
Example A (proper gearing) | – 700 disc size model, with HKII-4525-520kv motor, Tribunus II 12-130A ESC, 12 cell baery (44.4V) with 10.4:1 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 2030 rpm. Customer should fly highest rpm around 2030 rpm (which would pull around 130A peak), and can use lower throle percentages and lower rpms while flying in a smoother manner.
Example B (proper gearing) | -700 disc size model, with HKII-4525-520kv motor, Tribunus II+ 14-200A ESC, 12 cell baery (44.4V) with 9.6:1 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 2150 rpm. Customer should fly highest rpm around 2150 rpm (which would pull around 180A peak), and can use lower throle percentages and lower rpms while flying in a smoother manner.
Example C (improper gearing) | -700 disc size model, with HK5-5024-535kv motor, Tribunus II+ 14-200A ESC, 12 cell baery (44.4V) with 9.6:1 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 2300 rpm. Customer thinks the high kv and steep gearing will give “more power”, but it only running 2000rpm. Customer uses 15%-20% lower throle percentages to achieve 2000rpm but sll flies in an aggressive way. Due to the improper gearing the motor is not in its opmal range and will pull higher amps (let us say 180A), then due to the paral throle percentages, his ESC phase current could actually be over 220+ amps. Customer should change pinion to smaller one, around 10,6:1 Gear rao, and run 2100rpm with less collecve pitch.
Example D (improper gearing) | -700 disc size light weight model, with HKIV 4025 1100kv motor, Tribunus III 06-160A ESC, 6 cell baery (22.2V) with 10.8:1 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 2080 rpm. Since such a larger disc on low voltage would pull very high amps, customer thinks he can just lower the throle percentage down to run lower RPMs. Customer uses 30-35% lower throle percentages to achieve 1500rpm and flies in a moderate way. Due to the improper gearing the motor is not in its opmal range and due to the large disc it will pull higher amps (let us say 120A), but then due to the paral throle percentages, his ESC phase current could actually be over 170+ amps. Customer should use lower kv motor.
Example E (proper gearing) | -700 disc size light weight model, with HKII-4225-810kv motor, Tribunus II 06-120A ESC, 6 cell baery (22.2V) with 10.8 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 1530 rpm. Customer should fly highest rpm around 1530 rpm (which would pull around 100A peak), and can use lower throle percentages and lower rpms while flying in a smoother manner.
Example D (improper gearing) | -570 disc size model, with HKIV 4025 1100kv motor, Tribunus II 12-130S ESC, 7 cell baery (23.1) with 8.8:1 gear rao. Using our Head Speed Calculator app, we can calculate the opmal RPM is 2600 rpm. Customer thinks using a 7s baery instead of 6s baery will give “less amps for equal power”, customer thinks he can just lower the throle percentage down to run lower RPMs. Customer uses 20% lower throle percentages to achieve 2300rpm and flies in an aggressive way. Due to the improper gearing the motor is not in its opmal range and due to higher voltage, it will be able to pull higher amps (let us say 160A), but then due to the paral throle percentages, his ESC phase current could actually be over 175+ amps. Customer needs to change gearing to ~10.1 : 1 to get the motor back into its opmal RPM range.

20.0 Aer Sales Service
Scorpion ESC are backed by a 1–year manufacture warranty. This covers defects related to manufacture producon issues which have led to improper funcon or failure. The warranty does not cover user induced failures / damages. Examples of User induced damages include, but are not limited to, crashing, cung the wires, capacitor connecon failure (due to vibraon / improper mounng), etc. Examples of User induced failures include, but are not limited to, improper gearing, poor motor choice, wrong disc / prop size, over current (see secon 11.1) excessive baery wire length causing voltage ripple (see secon 16), improper cooling / over temperature, improper acceleraon sengs, etc. If you have quesons or issues with your Scorpion Tribunus ESC, or would like to begin a warranty / repair claim, please contact the shop it was purchased from, or write us at support@spihk.com.
Scorpion Power System LTD Tribunus III (14 cell) Manual Updated: October, 1ST,2024

Documents / Resources

SCORPION ESC SBEC Series Scorpion Power System [pdf] User Guide
14S, 14-220A, 2025, ESC SBEC Series Scorpion Power System, ESC SBEC Series, Scorpion Power System, Power System

References

User Manual

ESC SBEC Series Scorpion Power System User Guide

ESC SBEC Series Scorpion Power System

Specifications

Product Usage Instructions

Safety Precautions:

Installation:

Programming and Configuration:

Frequently Asked Questions (FAQ)

Q: Can the Tribunus III ESC be used with all types of RC
aircraft?

Q: How do I monitor RPM using the built-in phase sensor?

Q: Is it possible to adjust the temperature protection
feature?

Documents / Resources

References

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