HEADING-LOCK GYRO
MS - 044
INSTRUCTIONS MANUAL
Dear Customer,
Thank you for purchasing this genuine MS Composit product.
The fully digital, high rate mini-piezogyro MS-044 is designed for use in electric RC helicopter models of all sizes - starting from the
micro-helis, such as Hornet, up to the large ones.
The MS-044 Piezo Gyro has two operation modes:
1.Standard Mode
is normal gyro function, with the gyro gain controlled remotely through an RC equipment channel or by a trim.
2.Heading Lock Mode
is designed for keeping the helicopter stable during aerobatic flight, when the demand for keeping the hell
straight is extremely high.
Both modes are switchable during the gyro operation, whilst in flight, as well as the gain of the gyro in the selected mode.
If the RC equipment does not have a free channel for the gyro gain and mode setup, this task can still be done using a trim.
The MS-044 gyro provides a function of an electronic servo travel LIMIT, which eliminates the risk of mechanical servo overload.
The MS-044 gyro provides a
Controllable Delay
function, which enables fine-tuning of the System depending an the heli weight and
servo speed. This function is not available, when the gyro gain is set manually by a trim.
The gyro provides the function of
Authority Mixing -
a proportional decrease of gyro sensitivity to the stick control input. The higher the
control input, the smaller the gain - this prevents the gyro to „override" the pilot control inputs.
Gyro sense reversal is achieved simply by turning the gyro upside-down, so check the proper sense before the gyro is installed!
To get the most out of the MS-044, use fast servo for the controlled function! For micro hell Hornet, we recommend use of MS-007
Microservo MS 10, or equivalent with a speed at least 0,09sec/60°.
MS-044 INSTALLATION
To install the MS-044, use the attached double-sided self adhesive tape, which absorbs :malt vibrations. Fix the gyro an a clean surface
for good tape adhesion. The mounting surface should be rigid enough to avoid self generated vibrations during the mode) operation.
Install the gyro in a vertical position, parallel to the axis of model rotation, see picture. It is not recommended to use the servo backside
for the installation, due to high vibration transfer to the gyro.
Place the gyro and it's cables as far as possible from the electrical interference sources - motor, speed controller.
The `gyro must not contact either any moveable mode) parts, nor any other parts of the model, so the vibration transfer to the gyro is
minimised. For the same reason, do not fix the gyro cables at a distance closer than 30 mm from the gyro.
GYRO
FUNCTION SETUP
The upper trim,
marked GAIN/DELAY serves for the selection of the gyro mode and the gyro gain in the case when the gyro gain cable
is NOT attached to a receiver channel, i.e. When the gyro mode and gain are set locally without using RC equipment.
When the gyro gain cable is attached to !he receiver, the trim sets up the gyro Delay function.
The lower trim,
marked LIMIT, sets the electronic limits to the servo travel, preventing the servo and/or the mechanical system from
damage. The bigger the trim setting, the bigger the servo travel. The servo travel is set for both sides at once.
ATTENTION! For security reasons, the trims are not read by the gyro in real time, but only at the gyro calibration time after
gyro power on. Therefore, when changing the trim setting, it is mandatory to „reboot" the gyro by switching the power off and
on.
The LED control light status:
When the LED light is
an -
the gyro performs inicialization procedures, read-out of the trims and the sensors.
In this phase, do not
move the model, do not touch the transmitter sticks, otherwise the gyro will not function properly.
When the LED light is off -
the inicialization procedure has ended, the gyro is ready for operation, and there is no control input signal
an the channel, controlled by the gyro.
When the
LED light blinks - the gyro is in operational mode, and there was a control input detected an the channel, controlled by the
gyro. This possibility of checking the presence (or absence) of the control signal is very useful, when finding out reasons of improper
gyro function - the blinking LED will immediately tell you, that for example some unwanted mix (as REVO mix), was left activated in
the transmitter.
