CSM SL560 GYRO Manual

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CSM

With their pioneering Heading Lock, Yaw Rate Demand and Gyro Flight

Mode concepts CSM revolutionised the tail rotor gyro. The SL560 uses all

new sensor and processor technology to extend gyro performance still

further.

SL560 key features:-

NEW! Smart Lock - Enhanced Heading Lock mode that gives even

better lock & stop.

Gyro Flight Modes (as pioneered by CSM)

Selectable Super Servo support - gives optimum update rate for

Super & Digital servos.

Quick-setup - makes it simple to set gyro sense, servo type & servo

travel from your transmitter.

NEW! Quick-trim - accurately corrects linkage set-up.

Built-in Exponential - gives a smooth, progressive stick response.

Yaw Rate Demand - with rudder rates & throws it gives you total

control of stick sensitivity.

Command conditioning - removes stick bounce & improves

performance with PPM (FM) receivers.

Acceleration Gain - gives automatic, dynamically adjusting gain

tracking.

Dual Independent Stop-Tracking - gives separate optimisation of

left and right stop quality.

High Resolution pulse measurement and generation systems.

PC interface - allows access to over 20 internal gyro parameters for

performance customization.

Two stage power supply regulation.

Internal vibration damping.

Small, lightweight, single box design.

Outstanding customer support & repair service.

560

Smart Lock Gyro

GYRO

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Summary of Contents for CSM SL560 GYRO

Page 1 GYRO Smart Lock Gyro With their pioneering Heading Lock, Yaw Rate Demand and Gyro Flight Mode concepts CSM revolutionised the tail rotor gyro. The SL560 uses all new sensor and processor technology to extend gyro performance still further. SL560 key features:- NEW! Smart Lock - Enhanced Heading Lock mode that gives even better lock &...
Page 2 Robbe and the current style blue plug Sanwa/Airtronics radio systems. To use this unit with other makes of radio please check with the service centre in your country or e-mail the CSM service centre (tech@csm-ltd.co.uk) The gyro requires an auxiliary channel with travel adjustments to control the gyro mode/gain.
Page 3 Standard Servos With "Super Servo" support off the SL560 will work with any servo in the Futaba, JR and Sanwa ranges (and many other makes) but as with any gyro system a fast servo with a speed of 0.12 sec/60 deg. or better is to be preferred.
Page 4 The SL560 system The SL560 employs a 'Yaw Rate Demand' philosophy making it a true yaw rate gyro. In this system the rudder command from the pilot is interpreted as a request to the gyro to establish the desired yaw rate. The gyro drives the tail rotor servo as needed to obtain this yaw rate.
Page 5 Flight Modes The SL560 has two flight modes selectable by the transmitter gyro gain switch (or Auxiliary channel switch). Note: A rotary knob or slider is not recommended as it is not possible to accurately and repeatedly set the gain with these.
Page 6 that mode. Please note that it is not possible to use the SL560 with basic radio systems that lack a suitable channel for controlling the gyro gain. Gain channel operation The centre pulse value is set at the factory at 1.51ms. However the Quick- setup routine will adjust the gyro centre value to accurately match that of your particular radio system.
Page 7 Do not use any other type of mounting foam as this will reduce the performance of your gyro. Replacement strips are available as a CSM spare. For good adhesion, ensure that the surface to which the gyro is attached is smooth, hard and clean.
Page 8 better performance can often be gained by mounting the gyro at the rear of the frames. Radio and tail linkage adjustment In our experience most problems with gyro systems arise from incorrect radio set-up, incorrect servo arm length, or poor adjustment of the tail control linkage.
Page 9 Mid stick trim With the rudder stick and trim centred make sure that servo arm is at right angles to tail push rod. Now adjust push rod length until the pitch of the tail blades is about 8 degrees with the rudder stick centred. This will correspond approximately to the pitch of the tail in the hover and ensures that the servo will be close to its mid position in the hover.
Page 10 Gain channel checks Plug the rudder servo directly into the channel on the receiver you are going to use for the gyro gain/mode control. (This allows us to check for correct gain channel operation). Operate the gyro gain switch and observe the servo movement. If there is no movement check that you have correctly identified the gain channel and its switch.
Page 11 The Quick-setup routine. The unique Quick-setup facility of the SL560 allows the important parameters of Rudder stick centre, Gyro sense, Servo type and Travel limits to be quickly and simply set up from the transmitter. The set-up is stored in the gyro's non-volatile memory so the routine will only need repeating if one of these parameters needs to be changed.
Page 12 Performing the Quick-setup To access the Quick-setup you toggle the gain switch a couple of times during the gyro boot-up time (this is the first few seconds after the radio system is switched on). The gyro acknowledges this by zipping the servo back and forth a couple of times before parking it in the mid position.
Page 13 When the correct limit has been found enter this value by toggling the gain switch. Once again an acknowledging 'zip' is given. Now the servo travels over to the remaining travel limit. Adjustment and entering is the same as the first limit. Once this limit has been entered the Quick-setup routine is complete.
Page 14 If you wish to use this gyro with other types of radio system please consult your radio manual. In case of difficulty please contact your radio manufacturer or the CSM technical department (Email: tech@csm- ltd.co.uk) for advice. Connect the gyro to your receiver as indicated in the...
Page 15 Sanwa RD6000 This particular radio demands a slightly different set-up than normal although it may be used with the CSM SL560. There are no spare switchable channels on the RD6000 so to change gyro mode you will have...
Page 16 This leaves the flight mode 1 switch available for gyro mode switching, the gyro channel will also be used. The SL560 gyro is plugged into the rudder channel and the auxiliary lead from the gyro is plugged into the gyro channel in the receiver, (Channel 5).
Page 17 !! Make sure the model is not moved during the gyro self test period. !! Initial flight trials We suggest that you reduce the rudder travel adjustments in your transmitter to 80% for the first few flights until you get used to the response of the gyro system.
Page 18 Quick-trim several times, you still observe a trim difference between the modes this means that the adjustment of the tail linkage is outside the limits of the Quick-trim system. Do not move the trim on the transmitter but observe the direction of the trim error in mode 0 and adjust the tail pushrod length to correct it.
Page 19 Automatic Tail Stabilisation (ATS) This should not be used with the SL560 gyro Pilot Authority Mixing This should not be used with the SL560 gyro. Tail rotor dynamics To realise the full benefit of the SL560 it is important to have a basic understanding of the dynamics of the tail rotor system.
Page 20 to do so. With the model at a safe height fly the model sideways, starting slowly and building up speed until it reaches its maximum possible speed: a)If the tail manages to hold its position then the blade length is OK. b)If the tail starts to lag behind, then either more pitch is needed (if the mechanical limits haven't already been reached) or longer tail blades.
Page 21 DOs and DON'Ts DOs: Do mount the gyro with its axis of rotation parallel to the helicopter main shaft. Do mount the gyro on two of the supplied self-adhesive foam strips. Do mount the gyro to a hard, smooth clean surface. Do use the rudder ATV and rates to tailor required stick response.
Page 22 Trouble shooting Gyro will not go into Quick-setup routine. Ensure ATS (revo) mixing is off & rudder trim centred. Increase the gyro gain for both mode 0 and mode 1 to 100% and retry. Return the gains to their desired values after completion. Model pirouettes violently as soon as it starts to lift off.
Page 23 Even in calm conditions model suffers continuous small movements of the tail. May also appear to drift. Check model for vibration. Where vibration cannot be reduced (e.g. large gas powered helicopters) try resiting the gyro on double thickness of mounting foam. Model flies OK on first few flights of the day but tail starts to wag on later flights.
Page 24 Tel 0161 928 8505 Fax 0161 929 5984 EMail: tech@csm-ltd.co.uk Distributed world-wide by:- RC Models Distribution Ltd, Woodfield House, Woodfield Rd Altrincham, Cheshire, WA14 4ED England Tel 0161 929 5955 Fax 0161 929 5984 EMail: sales@rcmodels.org All software and documentation ©CSM Ltd 2002...