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Statox 503 Control Module
Issue 10 / 2018 Page
15
of
46
Connecting the internal relays
Statox 503 has three relays, each equipped with one make and one break contact. Two relays monitor
alarm threshold exceeding, one system failure.
System failure relay: The SF-relay coil is always active and drops out in case of a system
failure or voltage drop.
The alarm relay parameters can be set in the main menu. The SF-relay settings cannot be changed.
Figure 10
shows the contacts:
13 14 15
16
NC NO C
SF
17 18 19
20
NC NO C
A2
21 22 23
24
NC NO C
A1
!
Figure 10: Relay contacts (coil de-energized)