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3.1 Operating principle SMLC1
The SMC system is capable of identifying any possible first failure the moment it
occurs and switching off the downstream relays. Failure to detect a fault is
therefore impossible.
As further dynamic monitoring, the periodic overall test of the device takes place
every 2 minutes for one second as a fully automatic process. The yellow LED
“
TEST
”
shows that the test is being carried out followed by confirmation by the
red LED
“
FAULT”
lighting up briefly
.
Because of this special first failure safe design manual tests are not necessary so
there are no test switches on the SMLC1.
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Electrode
