Adtran MX410 Manuel D’Utilisation

Rear Panel

MX410/MX412 System Manual

4-4

PRELIMINARY

61189500L1-1B

Alarm Contacts/AUX Inputs

The alarm contacts and auxiliary (AUX) inputs are shown in 

Figure 4-4.  Alarm Contacts and AUX Inputs

The alarm interfaces connect to the nine Form C type relays on the MX410/MX412 labeled 

,

 

, and 

. Both NC (Normally Closed) and NO (Normally Open) contacts are 

provided. Connect the 

(Critical), 

, and 

 alarm leads from the fuse and alarm 

panel to the 

 (Common) and 

 or 

 wire-wrap terminals on the MX410/MX412 rear panel 

as required.
Auxiliary alarms 1-4 connect to the MX410/MX412 

 labeled 

-

. These pins detect 

open and closed relay contacts and are not polarity sensitive. 

 shows the pin assign-

ments for the 

.

The alarm severity level can be changed in the Environmental Alarms menu. 
After the alarm contact and AUX input connections have been made, install the protective 
cover over the wire-wrap headers.

Table 4-1.  AUX Inputs 1-9 Pin List

1, 2

Alarm 1 

Critical

3, 4

Alarm 2

Major

5, 6

Alarm 3

Minor

7, 8

Alarm 4

Alert

9

No Connect

N/A