Diagnostics; Diagnostics With Led - Siemens SIRIUS 3UG4 Equipment Manual

5.5

Diagnostics

5.5.1

Diagnostics with LED

Depending on the liquid level, the output relay switches in accordance with its set relay
switching behavior (drainage control OV, inflow control UN). If the output relay responds
(contact 11‑12 open, contact 11-14 closed), the yellow LED next to the contact symbol on the
device cover lights up.
The switching behavior of the output relay is shown in Chapter "Functions (Page 73)."
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005
3UG4501 filling level monitoring relay
5.5 Diagnostics
77