Seagate ST34501WD, ST34501DC manual DC power requirements Amps ST34501 WC models WD, DC models

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Cheetah 4LP Installation Guide, Rev. B

Table 2. DC power requirements (Amps)

 

 

 

ST34501

 

 

 

 

N, W, WC models

WD, DC models

 

+5V8, 10

+12V8

+5V8

+12V8

Voltage regulation5

± 5%

± 5%2

± 5%

± 5%2

Max. start current

0.88

2.2

0.89

2.2

Peak DC 3, 6, 9

Delayed motor start

0.81

0.08

0.72

0.08

(max)1, 4

Peak operating current

0.85

0.89

1.05

0.89

Typical DC 1

Maximum DC 1

0.9

0.94

1.09

0.94

Maximum (peak) AC 7

1.0

1.98

1.98

1Measured with an average reading DC ammeter. Instanta- neous +12V current peaks will exceed these values.

2A –10% tolerance is permissible during initial start of the spin- dle but must return to ±5% before reaching 10,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator.

3See the +12V current profile in the Cheetah 4LP Product Man- ual (publication number 83329120).

4This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor command.

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Contents ST34501N/W/WC/WD/DC Contents Preface Electrostatic discharge protection Important safety information and precautions Cheetah 4LP Installation Guide, Rev. B Wichtige Sicherheitshinweise Cheetah 4LP Installation Guide, Rev. B Page Electromagnetic compliance Regulatory agency complianceElectromagnetic susceptibility Electromagnetic compliance for the European Union Australian C-TickSeagate technical support services Online servicesSeagate CompuServe forum FAX services SeaFAXDirect-support services Seagate technical supportCustomer service centers Manufacturer’s representativesGeneral description Drive characteristics Additional drive characteristics DC power requirements Amps ST34501 WC models WD, DC models +12V8 +5V8 Voltage regulation5 ± 5% ± 5%2Dimensions of the drive Drive models General informationScsi ID jumpers Drive termination Terminator power Circuits and data path widthsCable characteristics for single-ended circuits Pin I/O connection to drive Multiple drive connection to host adapter Multiple-drive connection to host adapter Scsi I/O Providing adequate cooling Kühlung des Systems Suggested air flow Abbildung 4. Empfohlener LuftstromverlaufMounting the drive and connecting cables Installation des Laufwerkes und Anschluß der KabelPage Pin Power Pin GleichstromHinweis Cheetah 4LP Installation Guide, Rev. B Mounting configuration dimensions Formatting the drive Quick reference desktop system notesSetting the Scsi ID jumpers Setting the Scsi ID on model N drivesTerminating the drive Terminating the driveSetting terminator power jumpers Other applicable jumper options Additional jumper optionsWD drives Model W and WD drive alternate ID select and LED connection Terminating the drive W model shown Drive Front Other option jumpers are available as illustrated below WC/DC drives Applicable jumper options Jumper optionsDrive Active indicator Drive Active LED indicator connectionsPage Page