SICK T4000 Multi Instrucciones De Operación página 148

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Chapter
Note
148
© SICK AG • Industrial Safety Systems • Germany • Subject to change without notice 8011036/TF94/2010-06-29
System description
External device monitoring can be connected to the
safety evaluation device. External device monitoring
only becomes effective on reset. Connecting the
N/C contacts of the output relays in series with the
reset circuit results in permanent external device
monitoring.
In the event of an internal fault in the safety
evaluation device, the safety circuit is deactivated
and the diagnostic output is set to HIGH; the LED
DIA turns red.
For a functional test, the whole safety circuit can be
tested by applying 24 V DC to the test input of the
safety evaluation device without opening the
protective devices.
The number of learning and switching operations is
stored in the internal memory of the safety evalua-
tion device. The manufacturer can read out this
memory if required.
Operating instructions
T4000 Multi