Leuze electronic BPS 307i, Operating Instructions Manual

Page: 27 / 95

Functions
Leuze electronic BPS 307i 27
4.3 Timing
The BPS of the 300i series operate with a scanning rate of 1000 scans per second. A measurement value
is ascertained every 1 ms.
The following parameters are relevant for the timing of the position and speed measurement:
4.4 Leuze webConfig tool
The webConfig configuration tool offers a graphical user interface for the display of process data, config
-
uration and diagnostics of the BPS via a PC; see chapter 9 "Leuze electronic webConfig tool – Extended
configuration".
4.5 Evaluation of the reading quality
The BPS can signal the reading quality of the BPS. The reading quality is displayed in % values.
The parameters for the evaluation of the reading quality are set via the webConfig tool:
CONFIGURATION > DATA PROCESSING > Reading quality; see chapter 9.3.2 "CONFIGURATION
function".
Parameter Description Range/Values
Speed resolution The parameter defines the resolution of the speed value. It
affects only the fieldbus output.
1 mm/s
10 mm/s
100 mm/s
1000 mm/s
or
Free resolution
Averaging The parameter specifies the averaging time of the calcu
-
lated speed values in steps.
Steps:
2 ms, 4 ms,
8 ms,
16 ms, 32 ms,
64 ms, 128 ms
Parameter Description Range/Values
Integration depth The integration depth affects the measurement of position
and speed. The
integration depth
parameter specifies the
number of sequential measurements that the BPS uses for
position determination.
The integration results in smoothing of the output measure
-
ment value.
An
integration depth
of 8 (position determination with 8
measurement values) results in a response time of 8 ms.
Factory setting:
8
Update rate The update rate (50 µs to 2 ms) of the measurement values
at the SSI interface can be configured via the webConfig
tool; see chapter 9.3.2 "CONFIGURATION function".
Factory setting:
2 ms
Error delay time Errors that occur are suppressed for the configured time.
If no valid position or speed value can be ascertained in the
configured
error delay time
, the last valid value is always
output.
If the error persists after the
error delay time
elapses, the
value of the
Position/Speed value in case of error
parame
-
ter is then output (standard).
Factory setting:
50 ms
The values of the reading quality are displayed via the optional display (
Quality
), the serial com
-
munication protocol and via the webConfig tool; see chapter 9.3.3 "ALIGNMENT function".