Chapter 6 Interfaces

6.8Alarms

The alarms port interface is a 15-way male DB15 connector (see Figure 11). This connector allows remote notification of alarm conditions. Table 10 shows the alarms connector pinouts. Each alarm (Major, Minor, Critical and Power) is the output of a SPDT relay contact. A common contact with normally open and normally closed connections is included. Power alarm has just a common and normally open contact outputs. The alarms port is designated as SELV.

CAUTION

Do not apply more than 60 Volts (maximum) to any pin or combination of pins on the Alarms con- nector.

Figure 11. Alarms Connector

 

 

1

8

 

 

 

9

1 5

 

Table 10. Alarms Connector Pin-out

 

 

 

 

 

 

 

 

Pin No

Description

Pin No

Description

 

 

 

 

 

 

1

Not used – do not connect

9

Minor alarm normally closed

 

 

 

 

 

 

2

Not used – do not connect

10

Minor alarm common

 

 

 

 

 

 

3

Not used – do not connect

11

Major alarm normally open

 

 

 

 

 

 

4

Not used – do not connect

12

Major alarm normally closed

 

 

 

 

 

 

5

Critical alarm normally open

13

Major alarm common

 

 

 

 

 

 

6

Critical alarm normally closed

14

Power alarm normally open

 

 

 

 

 

 

7

Critical alarm common

15

Power alarm common

 

 

 

 

 

 

8

Minor alarm normally open

 

 

 

 

 

 

 

40

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Image 40
Dialogic SS7G21, SS7G22 manual Alarms, Pin No Description