FUTABA 7PX User Manual page 137

S.BUS function setup
1
On the setting screen of each function, if you tap the item to be set, [-] [reset] [+] will be dis-
played at the bottom of the screen, tap the [-] [+] on the panel Set. Tap[Reset] to return to
the initial value. There are items with no [reset]. In case of selection type, data is switched
by tapping an item.
ID
Displays the ID of the servo whose param-
eters are to be read. It cannot be changed.
Dead band
The dead band angle at stopping can be
specified.
[Relationship between dead band set val-
ue 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.
Damper
The characteristic when the servo is stopped can be set.
When smaller than the standard value, the characteristic becomes an overshoot character-
istic. If the value is larger than the standard value, the brake is applied before the stop posi-
tion.
Especially, when a large load is applied, overshoot, etc. are suppressed by inertia and hunt-
ing may occur, depending on the conditions. If hunting (phenomena which cause the servo
to oscillate) occurs even though the Dead Band, Stretcher, Boost and other parameters are
suitable, adjust this parameter to a value larger than the initial value.
[Relationship between damper set value and servo operation]
Small - When you want to overshoot. Set so that hunting does not occur.
Large - When you want to operate so that braking is not applied. However, it will feel like the
servo response has worsened.
(Note)
If used in the hunting state, not only will the current consumption increase, but the life of the servo will
also be shortened.
Smoother
This function makes servo operation smooth. Set it according to your taste. Normally set it
to "ACT". Set it to "INH" when want especially quick operation. When the smoother func-
tion was set to "ACT" and the servo was operated the distance up to the target position is
changed in steps so movement is smooth.
Stretcher
The servo hold characteristic can be set. The torque which attempts to return the servo to
the target position when the current servo position has deviated from the target position can
be adjusted.
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S.Bus Servo
2017/08/02 14:17:36