ADTRAN 550 user manual Using the Front Panel, ACO Switch

Chapter 4 Using the Front Panel

OVERVIEW

The front panel contains the Alarm Cut-off (ACO) switch, the CRAFT port, and the controller and module status LEDs. The LEDs provide visual infor- mation about the ATLAS 550 Base Unit and any option module that may be installed. Figure 4-1 identifies the ACO switch, the CRAFT port, and the LEDs.

Network Module	Option Module
Status LEDs	Slot Numbers

							ATLAS 550
		1	2	1	2	3	4
POWER		OK	OK	STATUS
SYSTEM		TEST	TEST	ONLINE
ETHERNET		ERROR	ERROR	TEST
REMOTE		ALARM	ALARM			MODULES
			NETWORK
		CRAFT
	ACO
Controller	Alarm	CRAFT			Module Status LEDs
Status	Cut-off	Port
LEDs	Switch

Figure 4-1. ATLAS 550 Front Panel Layout

ACO SWITCH

The ACO switch deactivates (clears) the Alarm Relay, located on the rear panel of the ATLAS 550, after an alarm condition has occurred. If an alarm condition is corrected and then reoccurs, the Alarm Relay will re-energize (see also ACO Switch in Table 4-2 on page 4-3).

61200305L1-1 ATLAS 550 User Manual 4-1