Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 25)

Rockwell Automation Publication 10000337275 Ver 01—October 2014 23
Chapter 4 Configurable functions
Multiple sampling
If multiple sampling is set, an object must be scanned several times before the SafeZone Mini switches its OSSDs to the OFF
state. In this way you can reduce the probability that insects, welding sparks or other particles result in the shutdown of
the system.
If a multiple sampling of three is configured, for instance, an object must be detected in the protective field three times in
succession before the SafeZone Mini switches the OSSDs to the OFF state.
The total response time is increased by the multiple sampling!
With a multiple sampling greater than two, note that you must add a supplement to the basic response time (see Chapter
12, “OSSD response times” on page 55)!
On the SafeZone Mini, a multiple sampling of two is the minimum setting. You can set the multiple sampling to up to 16
with the aid of the SCD software. The supplement to the basic response time resulting from your setting is displayed in the
SCD software.
Table 7: Recommended
multiple sampling
Recommendation Using multiple sampling you can increase the availability of a system.
You can configure the multiple sampling in the SCD software. You can set individual multiple sampling for each
monitoring case.
Stand-by mode
If, in mobile applications, vehicles are not moved for a time (e.g. for battery charging), the OSSDs can be switched to the
OFF state and the laser on the SafeZone Mini can be switched off. In this way the power consumption of the device is
reduced.
In this way you also prevent the safety laser scanners from optically interfering with each other and entering an error
condition.
The function can be realized with the aid of the stand-by mode.
In order to switch to the stand-by mode, on the SafeZone Mini one universal I/O connection must be configured as stand-
by input. (see Chapter 4, “Universal I/O connections of the SafeZone Mini” on page 17).
Note A monitoring case is not occupied by the stand-by mode.
ATTENTION
Application Recommended multiple sampling
Stationary under clean ambient conditions 2 times
Vertical applications 2 times
Mobile 4 times
Stationary under dusty ambient conditions 8 times