ADTRAN 1200305L1 system manual DLP-014, Alarm Relay Connector Pinout

Section 5, DLP-014 ATLAS 550 System Manual

DLP-014

Perform Steps Below in the Order Listed

1.For the alarm relay contacts labeled ALARM, determine whether the external alarm reporting device uses a normally open (NO) or normally closed (NC) circuit for alarm relay. For the external monitor labeled RELAY MON, the ATLAS 550 uses a NO circuit for alarm relay.

2.Using standard Telco cross-connect wire, determine and cut the length required to reach from the alarm headers to the alarm-reporting device(s).

3.Using wire strippers, strip 1 inch from both ends of each wire.

4.Remove both terminal blocks.

5.Using the small straight slot screwdriver, loosen the screws in both terminal blocks.

6.For the four-position terminal block, insert one strand into the third slot (counted from the left) for the COM connection from the ATLAS 550.

7.Insert another strand into either the first slot or the second slot for the NC or NO connections, respectively.

8.For the two-position terminal block, insert one strand into the first slot (counted from the left) for the Alarm Out signal. Insert the other strand into the last slot for the Alarm In signal. Complete this step only if you wish to have the ATLAS 550 monitor for external alarms.

9.Connect the wires to the appropriate terminals on the external device(s) being used.

1

3

O I

O

I

90-240VAC, 2A, 50/60Hz

WITHSAME

AGAINST

CAUTION:

2

4

COVERED WITH BLANK PANELS

TYPE AND RATING OF FUSE.

RISK OF FIRE, REPLACE ONLY

FOR CONTINUED PROTECTION

NETWORK 1

NETWORK 2

ETHERNET

FUSE RATING: 2A/250V SLO-BLO

NETWORK

NETWORK

MON

CONTROL

RELAY

ALARM

BEALLEMPTYSLOTSMUST

IN

OUT

IN

OUT

Alarm Relay

T1 NETWORK MODULE

TEST

500 Series

IN

OUT

MON

NC NO COM GND

Connection

External Alarm Relay

Monitor Connection

ALARM

1

2

3

4

RELAY

NC NO COM GND

1

2

MON

		Table 1. Alarm Relay Connector Pinout
Pin	Name	Description
1	Normally Closed (NC)	Opens when a selected alarm condition is present.
2	Normally Open (NO)	Closes when a selected alarm condition is present.
3	Common (COM)	Common connection between external circuitry and NC or NO terminal.
4	Chassis Ground (GND)

356 © 2002 ADTRAN, Inc. 61200305L1-1F