Section 3 Network Turnup Procedure ATLAS 550 System Manual56 © 2004 ADTRAN, Inc. 61200305L2-1B6. SUPPLYING POWER TO THE UNITAC-Powered SystemsThe AC-powered ATLAS 550 comes equipped with a detachable 6-foot power cord with a 3-prong plugfor connecting to a grounded power receptacle. As shipped, the ATLAS 550 is set to factory defaultconditions. To power-up the unit, ensure that the unit is properly connected to an appropriate power sourceand turn on the unit using the on/off switch on the back panel.DC-Powered SystemsThe DC-powered ATLAS 550 comes equipped with a DC power supply to furnish the voltages necessaryfor proper backplane operation. As shipped, the ATLAS 550 is set to factory default conditions. Afterinstalling the unit and any option modules, the ATLAS 550 is ready for power-up.7. INSTALLING NETWORK AND OPTION MODULESFigure 2 shows the option slot numbering designation as viewed from the back of the ATLAS 550.Figure 2. ATLAS 550 Slot Designation (Back Panel)• Power to the ATLAS 550 AC system must be from a grounded 90-130/190-240 VAC,50/60 Hz source.• The power receptacle uses double-pole, neutral fusing.• Maximum recommended ambient operating temperature is 45 oC.• 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.• Install this unit 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 ratedminimum 60 VDC, maximum 10A.• A readily accessible disconnect device that is suitably approved and rated shall beincorporated in the field wiring.• Maximum recommended ambient operating temperature is 45ºC.O IALL EMPTY SLOTS MUST BECOVERED WITH BLANK PANELS500 Series500 Series500 SeriesCAUTION: FOR CONTINUED PROTECTIONAGAINST RISK OF FIRE, REPLACE ONLYWITH SAME TYPE AND RATING OF FUSE.ETHERNETADMINRELAY ALARMMON COMNONC500 SeriesNETWORK 2NETWORK 1500 Series500 SeriesFUSE RATING: 2A/250V SLO-BLO90-240VAC, 2A 50/60Hz12341 32 4Ntwk 1 Ntwk 2
