Otto Bock 8E38 8 Series Instructions For Use Manual page 39

Via speed and strength of the muscle contrac­
tion on the electrode.
Speed:
Proportional, 15 mm/s to 300 mm/s
Initial gripping force
10 N
10 N
Control with one linear control element
Opening: Proportional. The opening speed is determined by the speed and strength of the
pull on the linear control element.
Closing: Proportional. The closing speed is determined by the speed at which the pull on
the linear control element is relaxed. This also specifies the level of the maximum
gripping force readjustment.
Stopping: Relaxing the pull on the linear control element very slowly causes the hand to stop
in the open position.
Example 1: After opening, relax the pull on the linear control element slowly. The hand is
closed analogue to the duration of muscle relaxation, at slow speed. The object is
gripped with low force (10 N). There is no automatic gripping force readjustment.
Example 2: After opening, relax the pull on the linear control element at the fastest speed. The
hand closes at the fastest speed and starts grasping the object with a gripping
force of 10 N. When the sensors recognise that the position of the object is chan­
ging, a readjustment is automatically performed up to the maximum gripping force
(130 N) as needed.
Open
Via speed and strength of the pull on the linear
control element
Speed:
Proportional, 15 mm/s to 300 mm/s
Initial gripping force
10 N
10 N
6.3.2.5 Program 5: VarioDual
Control with two electrodes
With this program, the opening speed is determined by the level and speed of the muscle con­
traction. The closing speed up to reaching the minimum gripping force of approx. 10 N depends
on the speed of muscle relaxation. The gripping force is determined by the subsequent or simul­
taneous muscle signal on the second electrode. Depending on the initial gripping force, FlexiGrip
takes effect slightly above the maximum gripping force readjustment in each case. When there is
no longer a load, the SensorHand Speed grips with the previous gripping force again.
Electrode 1
Via speed and strength of muscle relaxation on
the electrode.
Speed:
Proportional, 15 mm/s to 300 mm/s
Automatic gripping force
readjustment
At low to moderate closing
speed: None
At moderate to high closing
speeds: Up to max. 130 N
Close
Via speed at which the pull on the linear con­
trol element is relaxed
Speed:
Proportional, 15 mm/s to 300 mm/s
Automatic gripping force
readjustment
At low to moderate closing
speed: None
At moderate to high closing
speeds: Up to max. 130 N
FlexiGrip function
Effective from 20 N
Takes effect starting at the
maximum gripping force
FlexiGrip function
At low to moderate closing
speed: Effective from 15 N
At moderate to high closing
speeds: Effective starting at
the maximum gripping force
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