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S.BUS Servo Description of function of each parameter
*There are functions which can be used according to the kind of servo, and an impossible function.
• ID
Displays the ID of the servo whose parameters are to be read. It cannot be changed.
• Channel
Channel of the S.BUS system assigned to the servo. Always assign a channel before use.
• Reverse
The direction in which the servo rotates can be changed.
• Servo type
■ Normal: Normal operation mode
■ Retract: Landing gear retract mode. When a load is applied to the servo for 30 seconds without
any channel operation performed from the transmitter, the current consumption is suppressed by
widening the dead band to 40° . When channel operation is performed from the transmitter, or the
servo is moved outside the expanded dead band by an outside force, dead band expansion is reset
and returns to the original operation.
■ O.L.P. : This is the Over Load Protection mode. When a servo horn has been locked for more than 5
seconds by a load, the servo output turns off to protect the servo.
* The normal mode and retract mode are applicable only to the S3171SB, S9071SB, S9072SB, S9074SB,
and S9075SB
• Soft Start
Restricts operation in the specified direction the instant the power is turned on. By using this setting,
the first initial movement when the power is turned on slowly moves the servo to the specified position.
• Stop Mode
The state of the servo when the servo input signal is lost can be specified. The "Hold" mode setting
holds the servo in its last commanded position even if using AM or FM system.
• Smoother
This function changes smoothness of the servo operation relative to stick movement changes. Smooth
setting is used for normal flight. Select the "OFF" mode when quick operation is necessary such as 3D.
• Neutral Offset
The neutral position can be changed. When the neutral offset is large value, the servo's range of travel
is restricted on one side.
• Speed Control
Speeds can be matched by specifying the operating speed. The speed of multiple servos can be
matched without being affected by motor fluctuations. This is effective for load torques below the
maximum torque.
However, note that the maximum speed will not exceed what the servo is capable of even if the servos
operating voltage is increased.
• Dead band
The dead band angle at stopping can be specified.
[Relationship between dead band set value and servo operation]
Small Dead band angle is small and the servo is immediately operated by a small signal change.
Large Dead band angle is large and the servo does not operate at small signal changes.
(Note) If the dead band angle is too small, the servo will operate continuously and the current
consumption will increase and the life of the servo will be shortened.
• Travel Adjust
The left and right travels centered about the neutral position can be set independently.
＜ System Menu ＞
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