Ottobock | 25
8E38=9, 8E39=9, 8E41=9
9.2 Control mode 2:
AutoControl - LowInput
Control with 2 electrodes,
1 electrode and 1 switch or
1 switch
The MyoHand VariPlus Speed closes at constant speed, and the grip force increases propor-
tionally to the duration of gripping. The closing speed and the speed of grip force build-up can
be adjusted with adjustment regulator B.
9.2.1 Control with 2 electrodes
Opening:
Proportionally controlled by the OPENING electrode.
Closing:
At constant speed by muscle signal of any level above the ON-threshold to the
CLOSING electrode.
Control
mode 2
OPEN
CLOSE
Indication
AutoControl
LowInput
Sustained electrode signal Sustained electrode signal For amputees with
two weak elec-
trode signals
Reduced range of propor-
tionality:
Maximum speed once the
LOW-threshold has been
reached
Grip force:
Time proportional
After gripping once with
maximum force, the EMG
signal required to OPEN
the Hand will be set to a
higher value. Opening the
MyoHand VariPlus Speed
with unwanted electrode
signals is prevented.
Speed:
proportional
Adjustment regulator A
Speed:
constant
Adjustment regulator B
Display of the MyoSelect (757T13)
Adjustment regulator A is used to adjust the proportional speed
of the “OPENING” function.
Adjustment regulator B is used to adjust the digital speed of
the “CLOSING” function and the speed of grip force build-up.
Notice:
Always check the adjustments on the prosthesis and
adapt them to the amputee.
