EFIS-D100 Installation Guide - Dynon Avionics
EFIS-D100 Installation Guide - Dynon Avionics
EFIS-D100 Installation Guide - Dynon Avionics
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Autopilot <strong>Installation</strong> and Configuration<br />
DOWN▼ > (SENSITIVITY value is highlighted)<br />
Press DEC - and INC + to adjust SENSITIVITY to preferred initial setting for the aircraft.<br />
Step 3c – Set Roll Servo Turn Rate Limit: The ROLL SERVO > TRN RT LMT parameter<br />
specifies the desired average turn rate for AP-commanded turns. For example, a setting of 3.0°/S<br />
will ideally complete a 90° turn in 30 seconds. Due to flight dynamics and the time it takes the<br />
Autopilot to initiate a turn, there may be points during a turn where the target Turn Rate Limit is<br />
slightly exceeded. Turn Rate Limit is specified in °/s (average degrees of turn per second).<br />
Minimum: 0.5°/s, maximum: 3°/s, default: 1.5°/s.<br />
On the <strong>EFIS</strong>, perform the following (continuing from SENSITIVITY):<br />
DOWN▼ > (TRN RT LMT value is highlighted)<br />
Press DEC - and INC + to adjust TRN RT LMT to preferred initial setting for the aircraft.<br />
Firmware version 5.3 introduces an alternate set of control algorithms which may<br />
improve roll performance in some aircraft. To try this mode simply set TRN RT LMT to<br />
0. The autopilot will more directly control bank angle instead of targeting a specific turn<br />
rate. The maximum bank angle that the autopilot allows continues is still limited by the<br />
BANK LIMIT parameter. In this mode, set the BANK ANGLE LIMIT to the maximum<br />
value you want the autopilot to use in a turn (see below).<br />
Step 3d – Set Roll Servo Bank Limit: The BANK LIMIT parameter specifies a maximum bank<br />
angle which the AP will not exceed during turns. Setting an appropriate Bank Limit protects<br />
against overbank conditions. If the BANK LIMIT setting is reached during a turn, the AP limits<br />
the bank to that value and then reduces it as needed to complete the turn.<br />
If BANK LIMIT is reached, the Turn Rate Limit (set previously) is ignored until the aircraft<br />
returns to within 5º of level in the roll axis.<br />
To choose an appropriate BANK LIMIT, calculate the bank angle that results from your desired<br />
turn rate limit and cruising airspeed; then set the BANK LIMIT to at least 5° above this value. If<br />
this bank angle value is a number that you are not comfortable with, decrease the target TRN RT<br />
LMT (set above). Minimum: 05°; maximum; 45°, default: 35°.<br />
On the <strong>EFIS</strong>, perform the following (continuing from TRN RT LMT):<br />
DOWN▼ >(BANK LIMIT value is highlighted)<br />
Press DEC - and INC + to adjust BANK LIMIT to preferred initial setting for the aircraft.<br />
BACK > EXIT<br />
STEP 4 – PITCH SERVO INITIAL SETUP<br />
We recommend that you perform the following on the<br />
ground at zero airspeed.<br />
Step 4a – Set Pitch Servo Torque: The PITCH<br />
SERVO > TORQUE parameter specifies how much<br />
torque the pitch servo will exert before slipping.<br />
Servo slip is indicated by a yellow background on the<br />
slipping axis in the AP status indicator. Torque must<br />
be set high enough to prevent any slip due to air<br />
6-18 <strong>EFIS</strong>-<strong>D100</strong> <strong>Installation</strong> <strong>Guide</strong>