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6
Details on switching over detection and warning zones
During the course of an optimum machine utilization an alternate infeed or machining
cycle often occurs, which brings the most diverse danger areas with it. Automated
guided vehicle system applications by their very nature include various danger areas,
depending on the operating status. If the approach or presence of people is now to be
expected in these areas, the need exists of a precisely adjusting safety system. With its
four or eight switchable and freely configurable detection and warning zones (zone
pairs), the SIMATIC FS600 Laser Scanner satisfies multifaceted requirements with
regard to guarding the most diverse applications.
The definition of the necessary zone pair contours is possible with the convenient and
easy to use configuration and diagnostics software, "SIMATIC FS600 Parameterization
Software LS4soft".
The zone pairs are activated via the connection of 24 V DC to the corresponding control
inputs, FP1 to FP4, which are provided on the X1 plug of the scanner, Please find
detailed information on the scanner connection in Chapter 7.2 and Chapter 9.
If the SIMATIC FS600 Laser Scanner is to be restarted or switching is to be made
between different zone pairs, the following points must be observed:
•
The zone pair planned for the start must be defined with special consideration of
the danger areas valid for this moment.
•
The sequence of the monitoring zones to be activated must ensure that the lower
threshold of the application-related detection zone minimum values is never
crossed.
•
With selection of zone pair 8 the monitoring function of the scanner is deactivated,
i.e. no detection zones are monitored and the safety outputs (OSSDs) remain
constantly active! With detection zone 8 the laser scanner may not be started.
Detection zone 8 is planned for application-related situations in which it has been
absolutely ensured that there is no danger for any people present. These are, for
example, vehicles with crawler mode or in completely partitioned off and secured
areas, vehicles in approach mode in the area of loading or parking positions, as well
as machines in the "setup" operating mode.
Please observe the connection and interface assignment in Chapter 9.5 and the safety
notes in Chapter 3.
6.1
Sequence of zone pair switchovers
The SIMATIC FS600 Laser Scanner has four or eight detection/warning zones.
Switchover between these zone pairs is possible at all times, provided the operating
situation allows this. During the switchover process the SIMATIC FS600 Laser Scanner
monitors the zone pair activated before the switchover until a new one has been clearly
activated. The rules for the switchover depend on the amount of the selected zone pairs
and their numbers. The procedures described in the following tables apply.
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