WARNING:
• Use Zone Set switching to change the area of safeguarding.
•
Failure to follow these instructions could result in serious injury or death.
• Changing the Safety/Warning Zone Set from one pair to another must not expose any individual
to a hazard or hazardous situation. Supplemental safeguarding may be required.
The conditions for switching Zone Sets must be in accordance with a risk assessment. Machine stopping/braking
distances, scanner system response time (including interfacing devices), machine stop time and other factors that influence
the Safety Distance (minimum distance) and Stopping Distance calculations must be considered to safely use the Zone Set
switchover function.
In applications that incorporate Zone Set switchover, Minimum Distance D and Side Distance Z must be calculated
individually for all Zone Sets. Conditions to allow switching Zone Sets:
•
Only one Zone Set can be active after the switchover time; see the Zone Set logic in the configuration software.
•
Zone Set switchover is allowed even if there is an intrusion into the active Safety Zone (i.e. OSSDs are off).
• The switchover must be made within the Max Input Delay time selected in the configuration software. The input
delay allows waiting for the Area Switching inputs to stabilize from their transient states before accepting the Zone
Set change. Otherwise the activation and deactivation (bouncing) of the inputs could put the device into undesired
or invalid and temporary switching zone input combinations and therefore cause the device to enter the fault state.
The minimum input delay (default) value is 30 ms. It can be increased in 30 ms increments.
In addition, factors dependent on the risk assessment that may affect the safety circuit integrity level include:
•
Analyze the means of selecting Zone Sets with respect to failure modes to ensure that an unintended switchover
does not occur.
• Ensure that selecting/deselecting Zone Sets does not expose any individual to a hazard. Supplemental safeguarding
may be required.
Zone Set Configuration
1. On the Zone Set Configuration
screen, set the Zone Set No.
Depending on the other features used, you can use 1 to 6 different Zone Sets by changing the number shown to
match the number of desired Zone Sets.
When increasing the number of Zone Sets, the warning 'To go on, Zones design will be modified' displays. Click Ok.
The previous settings allow multiple Zone Sets. If a different warning displays, the previous settings must be
changed to use multiple Zone Sets.
2. Set the Input Delay Max (ms).
After more than one Zone Set is selected, this input field is displayed. This allows the setting of the delay applied
between switching from one Zone Set to the next. The input delay allows waiting for the Area Switching inputs to
stabilize from the transient states before accepting the Zone Set change. Otherwise the activation and deactivation
of the inputs could put the device in an undesired or invalid Zone Set state resulting in a potential unsafe or fault
condition. The minimum input delay (default) value is 30 ms. It can be increased in 30 ms increments.
WARNING: Set the Input Delay Max time as low as possible because the scanner will not react to
violations of the new Zone Set's Safety Zone during this Zone Set changeover time.
SX5 Safety Laser Scanner
www.bannerengineering.com - Tel: +1.763.544.3164 65
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