P
P
E
E
S
S
1
1
9
9
0
0
0
0
G
G
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i
G
G
S
S
M
M
R
R
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p
p
e
e
a
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— Chapter 7. Connecting External Alarms
PES1900NR Operations Manual
108
Alarm Relay Outputs
RepeaterNet software can be used to set the severity of all internal and external alarms. The severity
setting choices are:
•
Critical
•
Major
•
Minor
•
Event
•
Disable
Whenever the repeater generates an alarm, it also generates a summary alarm for that severity. For
example, if the repeater generates a critical alarm, it also generates a critical summary alarm. The
repeater also generates similar summary alarms for major and minor alarms.
Each summary alarm is connected to a relay. The contacts of these alarm relays are accessible
through J22 on the repeater’s connector panel. Figure 89 shows the basic internal circuit, which is
similar to the circuit for the user-controlled alarm relay outputs. When the repeater generates an
alarm, the transistor saturates and energizes the relay, as shown.
Figure 89 Alarm Summary Relay Output - Typical