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Page 93
Version 6.0
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NovaTec
Mobile Gateway S20
5.3
Alarm Contacts
On the rear of the backplane, you will find terminals to alarm contacts. These alarm contacts
are switched by relays. There are a pair of relais contacts available. One contact is switched
as a closer and one as an opener to the terminal. During normal operation the terminals A
and B are closed and the terminals C and D opened. In a fault situation it is vice versa.
The relay contacts are specified for a maximum switching voltage of 100 Vdc and a maximum
switching current of 1 A. The maximum allowed switching power is 30 W.
The alarm contacts are activated by the following cause:
·
power failure of the NovaTec
Mobile Gateway S20
Picture 50:
Alarm Contacts
Alarm
Power Pack
A BC D
A
B
C
D
In this diagramm the switches are
in position “no alarm” (operation state)