Bedienungsanleitung Futaba FX22 (Seite 63 von 174) (Englisch)

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S.BUS Servo Description of function of each parameter

*There are a function 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

When “Retractable” is selected and the servo has been continuously stopped for 30 seconds, the dead band

expands and unnecessary hold current due to external force is eliminated. When a new control signal enters,

normal operation is resumed. When using the servo as a landing gear servo, select “Retractable”. Also adjust the

servo travel to match the landing gear movement range.

• 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 be 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.

• Boost

The minimum current applied to the internal motor when starting the servo can be set. Since a small travel does

not start the motor, it essentially feels like the dead band was expanded. The motor can be immediately started by

adjusting the minimum current which can start the motor.

[Relationship between boost set value and servo operation]

Small

Motor reacts to a minute current and operation becomes smooth.

Large

Initial response improves and output torque increases. However, if the torque is too large, operation will

become rough.

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Futaba FX22 Seite 63

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