Moving Target Characteristic - Dimetix DLS-C 15 Technical Reference Manual

T R
ECHNICAL

3.4.2 Moving target characteristic

For continuous movements of a target which typically appears in positioning applications like automatic warehouses there is a special
measurement characteristic built into the FLS-C (H) called "Moving target"(See 2.6 Positioning on page 7 for a sample application)
moving target
V
Fig. 9: Condition for moving target characteristic
This measurement characteristic combines a fast measurement rate with the unique accuracy of the FLS-C(H). The measurement rate is
fixed and does not change during operation.
For RS-232, RS-422, analog and digital outputs, the output rate is 250Hz. The SSI interface can return reliable measurement data at up to
500Hz read out rate corresponding to the clock received from the master.
When measuring to a stopped target, the resulting distance will stay at a single value, it does not occur any deviation of the distance. This is
necessary if the sensor is used for positioning in closed looped applications.
An optimized error handling suppresses short errors, that may occur by a short break of the laser beam. In addition an over speed detector
(>10m/s) detects improper situations, which results in an error. This ensures robust operation in positioning applications.
The behavior of the device in case of a severe error can be defined by the operator (See 3.4.3 Error behavior on page 14).
For a description of the configuration command see 9.3.2 Measuring characteristic configuration (sNuc) on page 34.
Distance Laser Sensor
M
EFERENCE ANUAL
jumping target
V
V
> 150mm
distance jump
To operate the FLS-C(H) in this measurement characteristic
successfully, distance jumps must not occur. The laser beam
must always hit the target.
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