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Schroff Shelf Alarm Panel (SAP)
21596-077
9 SAP Telco Alarms
9.1 Telco Alarm Interface
The SAP provides a Telco Alarm interface on the DB15-male connector.
Three relay outputs are used for remote alarm distribution, reflecting the state of
the three Alarm LEDs. The relays are capable of carrying 72 VDC or 1 A with a
max. rating of 30 VA.
9.2 Telco Alarm LEDs
The Shelf Alarm Panel provides the Telco Alarm LEDs. These LEDs indicate
presence of Critical, Major and Minor alarms as follows:
Table 5: Telco Alarm LEDs
State
Off
On
Flashing
9.3 Alarm Silence Push Button
The Alarm Silence push button on the Shelf Alarm Panel faceplate deactivates
the alarm relays. During the time Alarm Silence is activated, the Alarm LEDs
flash. By pressing the Alarm Silence push button a second time, the alarm relays
are reactivated and the Alarm LEDs are solid.
The Alarm Silence push button only activates the Alarm Silence state, but
does not reset the alarms. If the silence interval (default 600 s) is exceeded
without resolving the alarms, the alarms will be re-initiated.
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Description
No alarm active
Alarm active
Alarm active, but silenced
7
R1.0, February 05, 2008
SAP Telco Alarms
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