2774-009307EN-5099-081526
Technical changes reserved. All data sheets at www.burster.com
burster praezisionsmesstechnik gmbh & co kg Germany
www.burster.com
Talstr. 1-5
.
Gernsbach 76593
.
Phone +49-7224-6450
Block diagram
Measurement data acquisition
With an active measurement, which can be triggered by
different events, the synchronously measured quantities X,Y
1
and optionally Y
2
are saved in the measurement data memory.
Real-time signals can indicate whether measurements are
exceeding set signal levels while the measurement is still in
progress. The evaluation phase follows immediately after the
measurement. In this phase, DIGIFORCE
®
checks whether the
recorded measurement curve(s) satisfy the stored graphical
and mathematical evaluation criteria. If any of these criteria has
been infringed, the measurement is classified as BAD (NOK),
otherwise it is rated as GOOD (OK). Once this evaluation is
complete, the measurement curve, the global OK or NOK result
and numerous process-related values are displayed in a suite of
measurement windows and updated at the Fieldbus interface.
The processing steps of the evaluation phase, which finishes
when the equipment is ready for the next measurement, have
been optimized so that even dynamic manufacturing processes
can be monitored.
Figure: Measurement window M1-1 contains a graph of the
measurement curve. Shows a curve containing a
forward and return section and detailed evaluation using
windows, envelopes, thresholds and mathematical
operations.
Evaluation of a measurement curve
As a universal evaluation tool for a vast range of curve shapes,
the DIGIFORCE
®
9307 provides configurable evaluation ele-
ments, which can be used to classify a measurement curve as
OK or NOK. In addition to the traditional evaluation windows
with defined entry and exit sides, the DIGIFORCE
®
9307 also
uses thresholds, trapeziums of type X or Y and envelopes as
graphical evaluation elements. Individual evaluation results
from the graphical tools can then be combined by mathemati-
cal operations to provide even more analysis flexibility for a
range of signal curves. The graphical evaluation elements can
be configured both numerically and graphically in setup mode
using one or more recorded measurement curves. They can be
used in any combination, even overlapping in an X/Y graph.
Window evaluation
Symbol
Max. number: 10
The Window evaluation element tests whether the curve has
passed through the defined entry side and exit side in the
window area. The user can configure these entry/exit sides
as required, and can even set multiple input/output sides.
A live signal can be assigned to up to two windows, which
is enabled immediately during recording if any infringement
occurs. It is also possible to define windows of type NOT (no
entry/exit) or BLOCK (curve ends inside the window) by suitable
configuration of the entry/exit sides. This evaluation element
also calculates the values listed below, which can optionally
be displayed and also input to user-definable mathematical
functions for further processing and evaluation:
►
Entry and exit coordinates (measurement pairs)
►
Local minimum/maximum
►
Absolute minimum/maximum
►
Mean value Y
Mean
►
Integral (area below curve to Y
MIN
limit inside window)
►
Curve gradient
►
Inflexion point
2
Fieldbus
µP
Sensor excitation
:
Strain gauge, Poti,
Transmitter
A
A
D
D
D
A
230 VAC supply
PC or PLC
communication
SPS E/A
23 input
31 output
(configurable)
Fieldbus
PROFIBUS DP, DP-V1
PROFINET, EtherNet/IP,
EtherCAT
USB
32 Bit µP
Embedded
Real-time operating
system
Ultra-fast measurement
recording and
evaluation
RS232
Ethernet
Numerical keyboard
5,7“ LCD color graphic
Measurement data
memory
X,Y
1
,Y
2
(Ring buffer)
S
en
so
r
Interfaces
X
Y
Y
1
DIGIFORCE
®
9307
Front panel
set up and services interface
Poti
Piezo
SSI
INCR
EnDat
±10V
9307 EN - 2
