Rockwell Automation 442L SafeZone Singlezone & Multizone Safety Laser Scanner - Manual (Page 17)

R
SafeZone™ Safety Laser Scanner User Manual
10000073050, July 2011 15
Original instructions
Permissible configuration
Table 4: Permissible configuration of the restart interlock
Reset
If you want to activate the restart interlock on the SafeZone safety laser
scanner (internal) and also a restart interlock on the machine (external),
then each restart interlock needs its own control switch.
The external restart interlock prevents the machine from restarting.
After resetting the SafeZone safety laser scanner the operator must press
the control switch to restart the machine controller.
If you do not use the restart interlock, leave the inputs disconnected (see
Section 5.1.1 “Pin assignments of the I/O modules” on page 32).
You can configure the type of restart in the SCD (device symbol SafeZone
safety laser scanner system, context menu Configuration draft, Edit..., file
card Scanner name).
3.4.7 Multiple sampling
When multiple sampling is set, an object must be scanned several times
before the SafeZone safety laser scanner switches off its OSSDs. In this
way you can reduce the probability that objects falling through the scan
plane, for example welding sparks or other particles, result in the
shutdown of the equipment.
With a multiple sampling configuration of (e.g., 3) an object must be
scanned three times in succession before the SafeZone safety laser
scanner switches off the OSSDs.
On the SafeZone safety laser scanner, a multiple sampling of 2 is the
minimum setting. You can set the multiple sampling up to 16 with the aid of
the SCD software.
Table 5: Recommended multiple sampling
3.4.8 Monitoring cases
If you are using the SafeZone multizone, you can define up to four
monitoring cases.
Restart Interlock of the
SafeZone
Restart Interlock
Machine/Vehicle Permissible Application
Deactivated Deactivated
Only if it is not possible to leave the
protective safety field to approach the
hazardous point. Ensure that this is
Deactivated Activated
All, if the hazardous area can be
completely seen by the
Activated Deactivated
Only if it is not possible to leave the
protective safety field to approach the
hazardous point. Ensure that this is
Activated Activated
All, if the hazardous area cannot be
completely seen by the operator. The
restart interlock of the SafeZone safety
laser scanner takes over the function
for resetting the protective device.
IMPORTANT The reset function is often also called
“preparation for restart.” In these
operating instructions the term reset is
typically used.
After operating the control switch for the internal
restart interlock (with protective safety field
unoccupied)
• The SafeZone multizone safety laser scanner
switches on its OSSDs.
• The adjacent LED on the safety laser scanner
illuminates green.
ATTENTION Ensure that the correct sequence is
followed!
The controller must be configured such
that the machine only restarts if the
SafeZone safety laser scanner is first
reset and then the control switch for
restarting the machine controller is
pressed.
IMPORTANT You will find examples on the
connection of the internal restart
interlock in Section 6.3 “Example
circuits” on page 34.
IMPORTANT The total response time is increased by
the multiple sampling.
With a multiple sampling greater than
2, note that you must add a
supplement to the basic response time
(see Section 11.2 “OSSD response
times” on page 42)!
Recommended multiple sampling Application
2 times
Stationary under clean ambient
conditions
4 times Mobile
8 times
Stationary under dusty ambient
conditions
Recommendation Using multiple sampling you can increase
the availability of a machinery.
You can configure the multiple sampling in the SCD
software for each monitoring case (device symbol
SafeZone safety laser scanner system, context menu
Configuration draft, Edit..., Monitoring case name, file
card Scanner name).