Otto Bock 8E38 8 Series Instructions For Use Manual page 35

risk of opening the hand with unintended muscle signals. The grip is more reliable, for example,
when holding cutlery.
Opening: Proportional via the OPEN electrode
Closing: Proportional via the CLOSE electrode
Example 1: With a low muscle signal, the lowest gripping force (10 N) is built up to grasp an
object. When the sensors recognise that the position of the object is changing, a
readjustment is automatically performed at up to 1.5 times the initial gripping force
(15 N) as needed. FlexiGrip takes effect starting at 20 N. When there is no longer
a load, the SensorHand Speed grips with the previous gripping force again.
Example 2: A higher muscle signal produces a higher gripping force and, when the position of
the gripped object changes, a readjustment is performed up to the maximum grip­
ping force (130 N) as needed. FlexiGrip takes effect when the load on the hand
exceeds 130 N (gripping force of the hand and externally applied force). When
there is no longer a load, the SensorHand Speed grips with the previous gripping
force again.
Open
Muscle signal via the electrode
Speed:
Proportional, 15 mm/s to 300 mm/s
Initial gripping force
Proportional: 0 N bis 100 N
The gripping force can be increased up to the maximum gripping force (100 N) at any time as
needed via a stronger muscle signal, independently of the automatic gripping force readjustment.
6.3.2.2 Program 2: AutoControl - LowInput
Control with: Two electrodes, one electrode and one switch or one switch
The hand closes at the fastest speed and grips an object with the lowest gripping force (10 N).
When the sensors recognise that the position of the object is changing, a readjustment is auto­
matically performed up to the maximum gripping force (130 N) as needed. FlexiGrip takes effect
starting at the maximum gripping force. When there is no longer a load, the SensorHand Speed
grips with the previous gripping force again.
Control with two electrodes
Opening: Proportional via the OPEN electrode.
Closing: At maximum speed with short muscle signal at any level over the ON threshold on
the CLOSE electrode.
Open
Close
Muscle signal via the electrode
Speed:
Proportional, 15 mm/s to 300 mm/s
Automatic gripping force
readjustment
Proportional: Up to max. 1.5
times the initial gripping force,
e.g. if the initial gripping force
is 10 N, gripping force read­
justment up to max. 15 N
Close
FlexiGrip function
Depending on the initial grip­
ping force, takes effect slightly
above the maximum gripping
force readjustment in each
case
Min. from 20 N
Max. from 130 N
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