Otto Bock 8E38 8 Series Instructions For Use Manual page 30

object is changing, a readjustment is automatically performed up to the maximum
gripping force (130 N) as needed.
Open
Pull on the linear control element at high
speed.
Speed:
Constant, 300 mm/s
Initial gripping force
10 N
Control with one switch
Opening: At maximum speed as long as the switch is activated.
Closing: After releasing the switch, the hand closes automatically at the fastest speed and
starts grasping the object with a gripping force of 10 N.
Open
Opens as long as the switch is activated.
Speed:
Constant, 300 mm/s
2.1.4.4 Program 4: VarioControl
Control with: One electrode or one linear control element
With this program, the opening speed is determined by the level and speed of the muscle con­
traction. The closing speed depends on the reduction of muscle tension. 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 one electrode
Opening: Proportional. The opening speed is determined by the speed and strength of the
muscle contraction.
Closing: Proportional. The closing speed is determined by the speed and strength with
which the muscles are relaxed. This also specifies the level of the maximum grip­
ping force readjustment.
Stopping: Relaxing the muscles very slowly via the electrode causes the hand to stop in the
open position.
Example 1: After opening, relax the muscle at slow speed. 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 muscle at the fastest speed. The hand closes automatically
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 changing, a readjust­
ment is automatically performed up to the maximum gripping force (130 N) as
needed.
30
Close
Relaxing the pull on the linear control element
very slowly:
Hand stops in the open position
Relaxing the pull on the linear control element
quickly:
Hand closes
Speed:
Constant, 300 mm/s
Automatic gripping force
readjustment
Up to max. 130 N
Close
Closes automatically as soon as the switch is
released.
Speed:
Constant, 300 mm/s
FlexiGrip function
Takes effect starting at the
maximum gripping force