Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 20)

18 Rockwell Automation Publication 10000337275 Ver 01—October 2014
Chapter 4 Configurable functions
OSSDs Internal OSSDs of the SafeZone Mini
If there is an object in the protective field, the internal OSSDs on the SafeZone Mini always switch. This can not be
configured differently in the SCD software.
External device monitoring (EDM) SafeZone Mini
The EDM checks if the contactors actually de-energize when the protective device is tripped. If you activate external device
monitoring, then the SafeZone Mini checks the contactors after each interruption of the protective field and prior to the
machine restart. The EDM can so identify if one of the contactors has welded, for instance. In this case the external device
monitoring places the system in a safe operational state and the OSSDs are not switched back to the ON state.
The table shows how the SafeZone Mini reacts if the external device monitoring detects a contactor malfunction:
Table 6: Behavior of the
SafeZone Mini on a
contactor malfunction
You can configure the external device monitoring in the SCD software.
Note You will find examples on the connection of the external device monitoring in Chapter 7, “Connection diagrams” on
page 43.
Restart of the SafeZone
Mini Standard You can configure the restart behavior of the SafeZone Mini as follows:
•
Without restart interlock
• With restart delay
• With restart interlock
You can configure the type of restart in the SCD software.
It is imperative that you configure the SafeZone Mini or the application with restart interlock if the
protective field can be left to approach the hazardous point or if a person cannot be detected by the
SafeZone Mini at every point in the hazardous area!
During the assessment, pay attention to whether the protective field can be left in the direction of the hazardous point, to
areas that are unprotected due to the mounting and the unprotected near range of the SafeZone Mini (see Chapter 5,
“Methods of preventing unprotected areas” on page 33).
Configuration of the SafeZone Mini without restart interlock
After the OSSDs on the SafeZone Mini have been switched to the OFF state due to an object in the protective field, the
OSSDs are re-enabled again immediately when there is no longer an object in the active protective field.
This configuration is only allowed …
•
If an external restart interlock is realized on the machine controller
or
•
If the protective field cannot be left in the direction of the hazardous point and if people can be detected by the
SafeZone Mini at every point in the hazardous area!
Restart delay for mobile applications
In mobile applications you can configure a restart delay from 2 to 60 seconds on the SafeZone Mini. The OSSDs on the
SafeZone Mini change to the ON state if there is no object in the protective field for the duration given.
This configuration is only allowed if the protective field cannot be left in the direction of the hazardous point and if a
person can be detected at every point in the hazardous area by the SafeZone Mini!
Without internal restart interlock
or
with restart delay • The system locks completely (lock-out).
• The error message 8 appears in the seven­segment display.
With restart interlock
• The SafeZone Mini switches its OSSDs to the OFF state.
• The LED is illuminated.
• The error message e appears in the seven­segment display.
.
ATTENTION