Fault-nding
38
Servos do not move → see page 8 „LED indicators“
Digital servos show a slight noise → no problem, see the FAQ on the Website
Jitter or oscillation in position mode, especially when close to the ground
• Reduce gain of position mode (on PILOT channel or better via PC on
„Position sens.gain“)
• Installed position too low? → Install as high as possible, see page 17
• Try increase PC-setting of aileron & elevator travel.
• For some slow reacting models, or in rigid mode, it might be necessary to
increase setting of „Horizontal sens.gain“ (via PC).
Machine is not stable in position mode, especially at higher altitude
• Sensor window dirty?
→ Protect from exhaust (glow models), clean regularly
• Low-contrast ground surface, e.g. snow, smooth asphalt, water?
→ Switch to horizontal mode
• Trim not “learned” correctly? see page 30
• Increase gain further? → via Pilot channel or PC
• Dense clouds of exhaust gas in the vision beam?
→ Set motor leaner, and install unit further away from the exhaust.
• Aerial wire or other obstacles in the sensor view beam?
(see rst paragraph on page 17, “Installation”)
• Much loose foliage or tall grass etc., moving in the rotor downdraught?
→ Switch to horizontal mode.
Flight attitude not steady, in position and in horizontal mode
• Vibration (visible or invisible), or excessive body resonance affecting the case
(especially with glow motors)? → See page 13 > Internal-combustion engines.
• Original double-sided foam tape not used and/or not horizontally arranged?
→ See page 16
Trim discrepancies with and without stabilisation
• After take-off the accuracy of stabilisation increases automatically within a
few seconds of ying.
• Transmitter trims moved? → Calibrate (“learn”) the neutral setting again.
• Severe temperature uctuations?
→ Leave the unit for about ve minutes to acclimatise, then switch on again.
• Severe vibration? → See “Flight attitude not steady” fault
To Next Page
Loading...
Need help?
General