Leuze electronic RSL 430 - Reference Contour Monitoring; Field Pair Monitoring; Internal Safe Time Delay; EDM Contactor Monitoring

Functions
Leuze electronic RSL 430 41
5.9 Reference contour monitoring
The reference contour monitoring function prevents unintentional misalignment and deliberate manipulation
of the safety sensor. If a protective field contains an area with reference contour, the safety sensor not only
monitors interruptions of the protective field, it also monitors the concurrence of the measured area contour
with the set reference contour. If the measurement values of the area contour deviate from the defined ref-
erence contour by more than the tolerance zone of 200mm, i.e., if no object is detected in the area with
reference contour, the safety sensor switches off and the safety-related switching outputs (OSSDs) switch
to off.
Activation of the function
Ä Activate the Reference contour monitoring function together with the definition of the protective field
boundaries using the configuration and diagnostics software (see chapter 9.4.4 "Creating and configur-
ing protective/warning field pairs").
5.10 Field pair monitoring
The Field pair monitoring function is used to set the monitoring mode for the selected field pair.
The Standby request monitoring mode is used to switch off field pair monitoring and the safety-related
switching outputs (OSSDs). This is advisable when parking vehicles, for example.
Activation of the function
Ä Activate field pair monitoring in the configuration and diagnostics software (see chapter 9.4.5 "Configur-
ing field pair monitoring").
5.11 Internal safe time delay
In the One protective function function mode, you can use the OSSDB safety-related switching outputs for
a second time-delayed switching function, e.g. for an emergency mechanism following controlled switch-off
via the OSSDA safety-related switching outputs.
NOTICE
If the protective function is required, restarting is not possible until the set delay time has ex-
pired.
Activation of the function
Ä Activate the internal safe time delay and the switch off delay time in the configuration and diagnostics
software (see chapter 9.4.3 "Activating protective function and contactor monitoring").
5.12 EDM contactor monitoring
The EDM contactor monitoring function dynamically monitors the contactors, relays or valves connected
downstream of the safety sensor. Prerequisite for this are switching elements with positive-guided feedback
contacts (normally closed contacts).
Activation of the function
Ä Activate the contactor monitoring function using the configuration and diagnostics software (see chap-
ter 9.4 "Configuring protective function").
If contactor monitoring is activated, it operates dynamically, i.e., in addition to monitoring the closed feed-
back circuit every time before the OSSDs are switched on, it also checks whether the feedback circuit has
opened within 500ms after release and whether it has closed again within 500ms after the OSSDs
switched off. If this is not the case, the OSSDs return to the OFF state after being switched on briefly.
A message is displayed on the alphanumerical display and the safety sensor switches to the fault interlock
state:
• With the OSSDs switched off, +24V must be present at the EDM input.
• With the OSSDs switched on, the EDM circuit must be open (high impedance).