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tolerances. The required documentation for this can only
be provided under point a) found legality.
The verification of the process ability must be done over a
longer time period. Random sampling is done in set intervals
from the running process and quality characteristics are re-
corded (measured). The influence of the machines, the mate-
rials and the operator are assumed by the process ability.
The basis of the analysis is the Gauss distribution curve.
Profibus Industry bus for the control and data exchange with sequence
control.
Profinet Industry bus for the control and data exchange with sequence
control resp. the base station
Program selection Selection of the program to be started. The program selection
can occur in different ways, depending on control and se-
lected screw types (e.g. I/O interface at the control, direct
program switching at the screwdriver, etc.)
Proxy Communication interface in a network.
PU see power unit
Push to start The screwdriver starts as soon as the bit is pushed.
Ready signal
The ready signal indicates that the control is ready for the
start of a screw assembly. If the ready signal is not available
then either a screw assembly is active or a state is present
that prevents the screw assembly (certain menus, system
error).
Reload Functionality for the control of screw feeders directly via the
sequence controller
Resolver
electro-magnetic transducer to change the angle position of a
rotor in an electric size
Screwdriver logic
Electronic where all data of the screwdriver is stored. If the
screwdriver is connected to the controller then it recognizes
all data of the screwdriver. No settings have to be performed
manually.
Screwdriving program Sequence of the screwdriving process
Consists of screwdriving strategies and commands
Screwdriving sequence
Sequence of the screwdriving process
Consists of screwdriving strategies and commands
Screwdriving strategy
Implementation of common screwdriving processes with pre-
defined parameters which contain the precise value of a
screw assembly. (e.g. fasten to torque with rotational angle
control)
Sequence controller Controller to use with the EC or EC servo screwdriver
Standard deviations
mean deviation of measuring values from the mean value.
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