Alarm Types; External Environmental Alarm Contact Alarm Inputs/Outputs; Figure 4. Env Alarm Input Pinouts - ADC PG-FlexPlus AMU-912 Manual

July 19, 2004
A T
LARM YPES
Any alarm may be set to the following severities:
• Critical - CR
• Major - MJ
• Minor - MN
• Not Alarmed - NA
• Not Reported - NR
An alarm type set to NA will accumulate history counts and send an SNMP trap message, but will not
activate an alarm LED or alarm relay. However, Current Status will show ACTIVE. An alarm set to NR will
not be reported by the AMU-912.
E E
XTERNAL NVIRONMENTAL
The AMU-912 allows the rear DB-25 connector to be provisioned as either a craft port (RS-232) or environmental
alarm input (Figure 4). When the rear DB-25 is provisioned for environmental alarm inputs, the conductors operate
as dry input contacts. An alarm is considered active when certain pins are pulled to +8 volts. There are a total of four
Environmental Alarms: ENV1, ENV2, ENV3, and ENV4
being reported through screens, they are also reported through the Derived Data Link (DDL) of the TR08 Shelf A
DS1. There are three shelf alarm relay settings: Standard, Telemetry and Environmental. The system activates
different relays depending on Shelf Option configuration
Table 4 on page 8 for proper wiring of customer supported DB-25 alarm cable.
When the AMU-912 is used in the Field Shelf, the rear craft port interface is not used for alarm inputs.
Rather, the prewired Alarm cable will contain the Alarm inputs and outputs and will operate as dry contacts.
Connections other than those shown in Figure 4 will damage the AMU-912 and will not be covered
CAUTION
under the warranty.
ADC Telecommunications, Inc.
A C
LARM ONTACT
1
1
14
25
13
13

Figure 4. ENV Alarm Input Pinouts

A I
LARM NPUTS
(Table 2 on page 8). In addition to the Environmental Alarms
(Table 3 on page 8). Refer to
14
25
SCP-AMU912-010-06H
/O
UTPUTS
Figure 4 and
7