Alarm Reset; Telco Alarm Connector (Db15-Male) - nVent SCHROFF 21596-077 User Manual

Schroff Shelf Alarm Panel (SAP)
21596-077

9.4 Alarm Reset

Hardware Reset:
Two relay inputs at the DB15 connector are used to reset the Minor and Major
alarm state.
The reset inputs accept timed pulse inputs for clearing Minor and Major alarm
states. Reset is accomplished by asserting a voltage differential from 3.3 VDC
to 72 VDC for between 200 ms and 300 ms. The acceptance voltage range is
from 0 to 48 VDC continuous (handles up to 60 VDC at a 50% duty cycle). The
current drawn by a reset input does not exceed 12 mA.
There is no hardware reset (reset input) for the Critical Alarm state.
Software Reset:
The RMCP and CLI functions can be used to set and reset the Telco Alarms
(incl. Critical Alarm). See the Pigeon Point Shelf Manager External Interface
Reference for more information.

9.4.1 Telco Alarm Connector (DB15-male)

Figure 8: Telco Alarm Connector (DB15-male)
Table 6: Telco Alarm Connector Pin Assignment
Pin
1 AMIR+
2 AMIR-
3 AMAR+
4 AMAR-
5 ACNO
6 ACNC
7 ACCOM
8 AMINO
9 AMINC
10 AMINCOM
11 AMANO
12 AMANC
13 AMACOM
14 APRCO
15 APRCOM
Shield Shelf-GND
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Name Description
MinorReset+
MinorReset-
MajorReset+
MajorReset-
CriticalAlarm - NO
CriticalAlarm - NC
CriticalAlarm - COM
MinorAlarm – NO
MinorAlarm – NC
MinorAlarm – COM
MajorAlarm – NO
MajorAlarm – NC
MajorAlarm – COM
PwrAlarm – NO
PwrAlarm - COM
Shelf Ground
8
SAP Telco Alarms
12705896
R1.0, February 05, 2008