Changes

__TOC__

__TOC__

<translate>

<translate>

{{DISPLAYTITLE:Basic operation and flying|noerror}}

{{DISPLAYTITLE:Basic operation and flying|noerror}}

=When the initialization has finished the Status LED flashes red/blue on my AR7210BX. Is it defective?=

=When the initialization has finished the Status LED flashes red/blue on my AR7210BX. Is it defective?= <!--T:2-->

Flashing red/blue LED means the throttle lock is engaged. Usually this happens when you switch on the transmitter after powering up the AR7210BX and/or the throttle is not in low position. The system then keeps the throttle in the stored failsafe position (which is teached when doing the bind process) in order to prevent from starting the motor by accident. Now to unlock the throttle you have to move the throttle on the radio into this failsafe/off position, then the LED display will change to the usual status display. '''So always make sure that you bind the system to the radio with correct low throttle position and do a rebind if you need to change this position later!'''<br />

Flashing red/blue LED means the throttle lock is engaged. Usually this happens when you switch on the transmitter after powering up the AR7210BX and/or the throttle is not in low position. The system then keeps the throttle in the stored failsafe position (which is teached when doing the bind process) in order to prevent from starting the motor by accident. Now to unlock the throttle you have to move the throttle on the radio into this failsafe/off position, then the LED display will change to the usual status display. '''So always make sure that you bind the system to the radio with correct low throttle position and do a rebind if you need to change this position later!'''<br />

<br />

<br />

<br />

<br />

=The gyro sensors do not seem to work correctly.=

=The gyro sensors do not seem to work correctly.= <!--T:3-->

''The rudder servo does not react or reacts very slowly to rotation of the helicopter.''<br />

''The rudder servo does not react or reacts very slowly to rotation of the helicopter.''<br />

* Maybe the gain of tail gyro is too low. Check assignment of gain channel and adjust the gain in the transmitter as described in the manual.

* Maybe the gain of tail gyro is too low. Check assignment of gain channel and adjust the gain in the transmitter as described in the manual.

<br />

<br />

=How to increase rotation rate for aileron, elevator and rudder?=

=How to increase rotation rate for aileron, elevator and rudder?= <!--T:4-->

The rotation speed of the helicopter is only determined by the length of the stick output signal. The gyros measure the actual rotation rate and the system will move the helicopter as fast as it is determined by the stick position. So simply increasing/decreasing the stick throw (mostly done by increasing/decreasing servo throw or using DualRate in the TX for the specified function) will increase/decrease rotation rate. Or you also can change the rate by choosing a different Control style (PARAMETER MENU point B) or directly editing the rate by software with StudioX or the StudioXm App.<br />

The rotation speed of the helicopter is only determined by the length of the stick output signal. The gyros measure the actual rotation rate and the system will move the helicopter as fast as it is determined by the stick position. So simply increasing/decreasing the stick throw (mostly done by increasing/decreasing servo throw or using DualRate in the TX for the specified function) will increase/decrease rotation rate. Or you also can change the rate by choosing a different Control style (PARAMETER MENU point B) or directly editing the rate by software with StudioX or the StudioXm App.<br />

<br />

<br />

<br />

<br />

=Paramter menu point B (Control style) - How does this work? Can is use DR/Expo in the radio?=

=Paramter menu point B (Control style) - How does this work? Can is use DR/Expo in the radio?= <!--T:5-->

The presets at PARAMETER MENU point B are nothing else than different DualRate/Expo curves inside the device. Choose the preset that fits your preferences best and that gives you a good amount of rotation rate. When using the presets (except for the "Transmitter" preset) it is recommended to not change the output signal in the radio significantly as especially when using expo this will bend, compress or stretch the curves, leading to very strange flight behavior. It just is not like adding 5% of expo as the curves between TX and AR7200BX/AR7210BX/AR7300BX will multiply and not sum together! Anyhow you may do small adjustments in stick throw, i.e. for slightly increasing the roll rate. This will not significantly deform the internal curves of AR7200BX/AR7210BX/AR7300BX.<br />

The presets at PARAMETER MENU point B are nothing else than different DualRate/Expo curves inside the device. Choose the preset that fits your preferences best and that gives you a good amount of rotation rate. When using the presets (except for the "Transmitter" preset) it is recommended to not change the output signal in the radio significantly as especially when using expo this will bend, compress or stretch the curves, leading to very strange flight behavior. It just is not like adding 5% of expo as the curves between TX and AR7200BX/AR7210BX/AR7300BX will multiply and not sum together! Anyhow you may do small adjustments in stick throw, i.e. for slightly increasing the roll rate. This will not significantly deform the internal curves of AR7200BX/AR7210BX/AR7300BX.<br />

<br />

<br />

<br />

<br />

=The helicopter wobbles on aileron and elevator axis.=

=The helicopter wobbles on aileron and elevator axis.= <!--T:6-->

''Reducing the swashplate gain does not help to suppress this effect completely.''<br />

''Reducing the swashplate gain does not help to suppress this effect completely.''<br />

* The helicopter's linkage ratio is not suitable for flybarless usage. In SETUP MENU point J adjust the cyclic pitch to exactly 6.0 degrees and make sure the color of the Status-LED lights up “blue”. If this is not the case change the mechanical linkage ratio of the helicopter (i.e. by moving the linkage balls further inwards on the servo horns, by mounting longer linkage balls on the swash plate outer ring or by mounting shorter linkage balls on the swash plate inner ring).

* The helicopter's linkage ratio is not suitable for flybarless usage. In SETUP MENU point J adjust the cyclic pitch to exactly 6.0 degrees and make sure the color of the Status-LED lights up “blue”. If this is not the case change the mechanical linkage ratio of the helicopter (i.e. by moving the linkage balls further inwards on the servo horns, by mounting longer linkage balls on the swash plate outer ring or by mounting shorter linkage balls on the swash plate inner ring).

<br />

<br />

=The tail of the heli turns around instantly when doing backwards flying.=

=The tail of the heli turns around instantly when doing backwards flying.= <!--T:7-->

* Tail gyro gain too low. Increase tail gyro gain as described in the manual and make sure you're using the tail gyro in HeadingLock mode (using "Rate-Mode" it is nearly impossible to perform backwards maneuvers!).

* Tail gyro gain too low. Increase tail gyro gain as described in the manual and make sure you're using the tail gyro in HeadingLock mode (using "Rate-Mode" it is nearly impossible to perform backwards maneuvers!).

* No sufficient thrust produced by the tail rotor. Check tail pitch angles. Reduce the maximum amount of available tail pitch throw at SETUP MENU point E to prevent the tail blades from stalling or increase the tail pitch angle if it's too small. Use larger tail rotor blades or from another brand and increase the rotor speed.<br />

* No sufficient thrust produced by the tail rotor. Check tail pitch angles. Reduce the maximum amount of available tail pitch throw at SETUP MENU point E to prevent the tail blades from stalling or increase the tail pitch angle if it's too small. Use larger tail rotor blades or from another brand and increase the rotor speed.<br />

<br />

<br />

=The tail oscillates in horizontal position with very low frequency or irregularly while hovering.=

=The tail oscillates in horizontal position with very low frequency or irregularly while hovering.= <!--T:8-->

* The HeadingLock gain of the tail gyro is too high. Reduce the HeadingLock gain (PARAMETER point D) by one step and increase the tail gain instead.

* The HeadingLock gain of the tail gyro is too high. Reduce the HeadingLock gain (PARAMETER point D) by one step and increase the tail gain instead.

* Due to mechanical issues the tail gyro can not work precisely. Check the linkage and mechanics for absolute free movement without hard points and use a dedicated rudder servo that is fast and accurate and that allows a high control frequency.<br />

* Due to mechanical issues the tail gyro can not work precisely. Check the linkage and mechanics for absolute free movement without hard points and use a dedicated rudder servo that is fast and accurate and that allows a high control frequency.<br />

<br />

<br />

=During slow hovering pirouettes the helicopter is rolling out.=

=During slow hovering pirouettes the helicopter is rolling out.= <!--T:9-->

The pirouette optimization setting may be wrong.

The pirouette optimization setting may be wrong.

* AR7200BX/AR7300BX: Adjust the pirouette optimization (SETUP MENU point N).

* AR7200BX/AR7300BX: Adjust the pirouette optimization (SETUP MENU point N).

<br />

<br />

=Helicopter tips over when trying to take off or tilts to one side in flight.=

=Helicopter tips over when trying to take off or tilts to one side in flight.= <!--T:10-->

* Please check whether everything works properly on the ground. When giving collective pitch input the swash should move up and down properly. When giving cyclic input it should return to zero after a few seconds. This is also especially after turning on Idle up or switching between flight conditions in the transmitter. Make sure that there are no trims, mixers, etc. in any flight condition and also make sure that the sensor directions for aileron and elevator are setup correctly Setup menu point M!

* Please check whether everything works properly on the ground. When giving collective pitch input the swash should move up and down properly. When giving cyclic input it should return to zero after a few seconds. This is also especially after turning on Idle up or switching between flight conditions in the transmitter. Make sure that there are no trims, mixers, etc. in any flight condition and also make sure that the sensor directions for aileron and elevator are setup correctly Setup menu point M!

* When taking off do not use too much cyclic input. Just let the motor come up to speed and then quickly give pitch input. Only when the helicopter is airborne the system can operate and control commands. If the helicopter sits on the ground, however, a stick input(= command to rotate the heli) would have no effect and the system would increase the cyclic pitch more and more desperately to perform a rotational movement. As soon as the helicopter will get "light" by increasing the collective pitch it will tip over abruptly. So always make sure that the swash is aligned straight during starting procedure!

* When taking off do not use too much cyclic input. Just let the motor come up to speed and then quickly give pitch input. Only when the helicopter is airborne the system can operate and control commands. If the helicopter sits on the ground, however, a stick input(= command to rotate the heli) would have no effect and the system would increase the cyclic pitch more and more desperately to perform a rotational movement. As soon as the helicopter will get "light" by increasing the collective pitch it will tip over abruptly. So always make sure that the swash is aligned straight during starting procedure!

<br />

<br />

=Status-LED flashes in operation mode, i.e. after landing.=

=Status-LED flashes in operation mode, i.e. after landing.= <!--T:11-->

The flashing Status-LED shows that a software-reset occurred during operation.

The flashing Status-LED shows that a software-reset occurred during operation.

* The receiver power supply does not seem to be sufficient. The voltage during operation dropped in a critical area (<3.5 Volts). Use a stable power supply and make sure that the wiring and plugs are dimensioned big enough and feature low contact resistance. On large helicopters we recommend to use the AR7300BX with high power input.

* The receiver power supply does not seem to be sufficient. The voltage during operation dropped in a critical area (<3.5 Volts). Use a stable power supply and make sure that the wiring and plugs are dimensioned big enough and feature low contact resistance. On large helicopters we recommend to use the AR7300BX with high power input.

<br />

<br />

=My servos are getting warm/hot, is this normal?=

=My servos are getting warm/hot, is this normal?= <!--T:12-->

Similar to a tail gyro a flybarless system is constantly working and correcting. So the servos are moving much more frequently than if they're controlled manually. Additionally the servos are usually driven with higher frequency, which means the system gives commands to the servos more often than usually (which will improve performance drastically). And because of the abolition of mixing levers and the support of the auxiliary rotor plane the servos have to resist higher forces in flight.

Similar to a tail gyro a flybarless system is constantly working and correcting. So the servos are moving much more frequently than if they're controlled manually. Additionally the servos are usually driven with higher frequency, which means the system gives commands to the servos more often than usually (which will improve performance drastically). And because of the abolition of mixing levers and the support of the auxiliary rotor plane the servos have to resist higher forces in flight.

This results to a higher power consumption and a stronger heat generation which usually is not critical. However under adverse conditions this can reach a critical range (e.g. at very high air temperatures or even if the servos are installed near other heat sources such as electric motors). In this case try reducing the driving frequency and/or the input voltage.<br />

This results to a higher power consumption and a stronger heat generation which usually is not critical. However under adverse conditions this can reach a critical range (e.g. at very high air temperatures or even if the servos are installed near other heat sources such as electric motors). In this case try reducing the driving frequency and/or the input voltage.<br />

<br />

<br />

=Servos react somehow "notchy" at high frame rate. Is AR7200BX/AR7210BX/AR7300BX damaging my servos?=

=Servos react somehow "notchy" at high frame rate. Is AR7200BX/AR7210BX/AR7300BX damaging my servos?= <!--T:13-->

If the servos are approved by the manufacturer for the chosen update frequency, this is a normal effect. The servos get new positioning signals four times faster than if they are connected to a conventional remote control receiver. Especially servos with brushless motors run very hard and direct which causes slightly jerky movements in modes with high servo frame rate. This is totally harmless to the servos and you will not notice in flight operation.<br />

If the servos are approved by the manufacturer for the chosen update frequency, this is a normal effect. The servos get new positioning signals four times faster than if they are connected to a conventional remote control receiver. Especially servos with brushless motors run very hard and direct which causes slightly jerky movements in modes with high servo frame rate. This is totally harmless to the servos and you will not notice in flight operation.<br />

<br />

<br />

<br />

<br />

=Why do the swashplate servos run very slow when testing on the bench?=

=Why do the swashplate servos run very slow when testing on the bench?= <!--T:14-->

This is absolutely normal. The movement of the stick only give a rate command to the system which actually controls the helicopter. The pilot no longer controls the servos directly by stick input (except for collective). So you can't say exactly what the system will do with the servos when you push one of the sticks.<br />

This is absolutely normal. The movement of the stick only give a rate command to the system which actually controls the helicopter. The pilot no longer controls the servos directly by stick input (except for collective). So you can't say exactly what the system will do with the servos when you push one of the sticks.<br />

<br />

<br />

<br />

<br />

=The servos move to full deflection even when reducing the stick throw in the radio=

=The servos move to full deflection even when reducing the stick throw in the radio= <!--T:15-->

''I don't want to have so much cylic pitch and try to reduce the pitch using Dual Rate in the radio.''

''I don't want to have so much cylic pitch and try to reduce the pitch using Dual Rate in the radio.''

This is absolutely normal and doesn't say anything about the rotation rates you will see in flight. Similar to the tail gyro in HeadingLock mode the system measures rotation rates and tries to maintain the rotation rate that is commanded by stick input. Now if you move the stick while the heli is standing on the ground you tell the system to rotate the heli with a certain speed. The system measures the speed and sees that nothing is happening. So it will apply more and more servo input in order to move the heli but as the heli can't move the servos will be driven to the maximum allowed deflection. You can't control the pitch by stick input and you don't need to!<br />

This is absolutely normal and doesn't say anything about the rotation rates you will see in flight. Similar to the tail gyro in HeadingLock mode the system measures rotation rates and tries to maintain the rotation rate that is commanded by stick input. Now if you move the stick while the heli is standing on the ground you tell the system to rotate the heli with a certain speed. The system measures the speed and sees that nothing is happening. So it will apply more and more servo input in order to move the heli but as the heli can't move the servos will be driven to the maximum allowed deflection. You can't control the pitch by stick input and you don't need to!<br />