Srx5600 Services Gateway Craft Interface Alarm Relay Contacts - Juniper SRX5600 Hardware Manual

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SRX5600 Services Gateway Craft Interface Alarm Relay Contacts

The craft interface has two alarm relay contacts for connecting the device to external alarm devices (see
Figure 8 on page 41). Whenever a system condition triggers either the major or minor alarm on the craft
interface, the alarm relay contacts are also activated. The alarm relay contacts are located on the upper
right of the craft interface.
Figure 8: Alarm Relay Contacts
The alarm relay contacts consist of two sets of connectors, one set for each of the two alarms (major and
minor). For each alarm color there are three connectors.
the connectors.
Table 10: Alarm Relay Contact Functions
Contact Label Contact Name
NC Normally Closed
C Current In
NO Normally Open
Table 11 on page 42 shows the electrical specifications for the alarm relay contacts.
44 11 0
49 22 0
Table 10 on page 41
Function
Connects the alarm relay to an external alarm-reporting device that
activates when the circuit between C and NC is closed.
Connects the alarm relay to the current source for the external
alarm-reporting device.
Connects the alarm relay to an external alarm-reporting device that
activates when the circuit between C and NC is open.
1024 23
1024 14
describes the functions of
41
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25