ADTRAN 1200305L1 DC Powered Systems, Mounting Options, Installing Network and Option Modules

Section 3, Network Turnup Procedure ATLAS 550 System Manual

DC Powered Systems

The DC powered ATLAS 550 comes equipped with a DC power supply to furnish the voltages necessary for proper backplane operation. As shipped, the ATLAS 550 is set to factory default conditions. After installing the unit and any option modules, the ATLAS 550 is ready for power-up.

•Power to the ATLAS 550 DC system must be from a reliably grounded -48 VDC or +24 VDC source which is electrically isolated from the AC source.

•This unit shall be installed in accordance with Article 400 and 364.8 of the NEC NFPA 70.

•The branch circuit overcurrent protection shall be a fuse or circuit breaker rated min-

imum 60 VDC, maximum 10A.

•A readily accessible disconnect device that is suitably approved and rated shall be in- corporated in the field wiring.

•Maximum recommended ambient operating temperature is 45 oC.

6.MOUNTING OPTIONS

The ATLAS 550 unit may be installed for tabletop, 19-inch or 23-inch rackmount, or wallmount configuration. ADTRAN includes 19-inch rackmount ears with the ATLAS 550 shipment (23-inch rackmount ears are sold separately). For a rackmount installation, the ATLAS 550 allows flush-face mount, face-forward mount, center mount, and rear mount. The rackmount ears may also be turned face down for wall mounting. When wall mounted, the ATLAS 550 unit may be installed with either side up and the front and rear panels facing sideways. For more details on wall mounting the ATLAS 550, please refer to the ATLAS 550 Installation Guide (61200305L1-19A) provided on the documentation CD.

Be careful not to upset the stability of the equipment mounting rack when installing this product.

7.INSTALLING NETWORK AND OPTION MODULES

Figure 1 shows the option slot numbering designation as viewed from the rear of the ATLAS 550.

		1	3
		SLOT 1	SLOT 3			O O I	I
					90-240VAC, 2A, 50/60Hz
								AGAINST WITH SAME	CAUTION:
		2	4
								TYPE AND
		SLOT 2	SLOT 4
								RATING OF FUSE.
		NETWORK 1	NETWORK 2		FUSE RATING: 2A/250V SLO-BLO
WITHBLANKPANELSCOVERED	ALLBEMUSTSLOTSEMPTY		ETHERNET	CONTROL		RELAY	ALARMONLYREPLACEFIRE,OFRISK		FORCONTINUEDPROTECTION
		Network Slot 1	Network Slot 2
				IN	OUT	MON	NC NO COM GND

Figure 1. ATLAS 550 Slot Designation (Rear Panel)

54 © 2002 ADTRAN, Inc. 61200305L1-1F