Product description and method of operation
108366_en_01
PHOENIX CONTACT
2.11
Error safety
The sensor provides the following internal error safety features:
–
Protection against polarity reversal of the supply voltage
–
Short-circuit protection and short-circuit monitoring at the safety outputs
–
Short-circuit protection at the signal outputs
–
Cross-circuit monitoring between the safety outputs
The sensor detects errors that have occurred with the next demand to switch on the safety
outputs at the latest.
Behavior in the event of an error
Safe state in the event of
an error
The safety outputs are switched off in the event of an error in the sensor.
The DIAG LED lights up red. In addition, a flashing code of the green STATE LED indicates
the type of error.
See Section “LED status indicators and switching states” on page 43.
Recovery in the event of an error
1.
Remove the cause.
2.
Open and close the safety equipment.
If the error is still indicated:
3.
Restart the safety switch:
a)
Disconnect the operating voltage.
b)
Connect the operating voltage again.
If the error cannot be reset, please contact Phoenix Contact.
2.12
Safe state
If the safety equipment is open, the safety outputs are switched off beginning at the assured
release distance S
ar
.
The device is in the safe state when the safety outputs are switched off.
The safe state is also entered in the following cases:
–
Error
–
Learning process
Perform a function test after every error.