Seagate Savvio 10K Manual download pdf (Page 31)

Savvio SCSI Product Manual, Rev. D

6.0 Physical/electrical specifications

This section provides information relating to the physical and electrical characteristics of the Savvio SCSI

drive.

6.1 AC power requirements

None.

6.2 DC power requirements

The voltage and current requirements for a single drive are shown in the following table. Values indicated apply

at the drive power connector. The table shows current values in Amperes.

[1] Measured with average reading DC ammeter or equivalent sampling scope. Instantaneous current peaks

will exceed these values. Power supply at nominal voltage. Number of drives tested = 6, 35 Degrees C

ambient.

[2] For +12 V, a –10% tolerance is permissible during initial start of spindle, and must return to ±5% before

10,000 rpm is reached. 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.

[3] See +12 V current profile in Figure 2.

[4] This condition occurs when the Motor Start Option is enabled and the drive has not yet received a Start

Motor command.

[5] See Section 6.2.1 “Conducted Noise Immunity.” Specified voltage tolerance is inclusive of ripple, noise,

and transient response.

Table 2: DC power requirements

Notes

ST973401 ST936701

SE mode LVD mode SE mode LVD mode

Voltage +5 V +12 V +5 V +12 V +5 V +12 V +5 V +12 V

Regulation [5] +10%/

-7.5%

+10%/

-7.5% [2]

+10%/

-7.5%

+10%/

-7.5% [2]

+10%/

-7.5%

+10%/

-7.5% [2]

+10%/

-7.5%

+10%/

-7.5% [2]

Average idle current DC X [1][7] 0.51 0.21 0.50 0.21 0.51 0.19 0.50 0.19

Maximum starting current

(peak DC) DC 3σ

(peak AC) AC 3σ

[3]

0.68

1.01

1.68

2.70

0.72

1.14

1.68

2.65

0.70

1.00

1.58

2.68

0.65

1.03

1.58

2.66

Delayed motor start (max) DC 3σ [1] [4] 0.49 0.05 0.48 0.05 0.49 0.05 0.49 0.05

Peak operating current

DC X

Maximum DC 3σ

Maximum (peak) DC 3σ

[1] [6]

[1]

0.73

0.75

1.12

0.40

0.46

1.50

0.74

0.75

1.32

0.43

0.49

1.54

0.74

0.76

1.14

0.46

0.49

1.48

0.69

0.74

1.30

0.47

0.49

1.48

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 77 78

Comments to this Manuals

No comments

Seagate Savvio 10K Manual Page 31

Comments to this Manuals

Related products and manuals for Internal hard drives Seagate Savvio 10K