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Savvio 10K.2 SAS Product Manual, Rev. D
25
6.0 Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
6.1 AC power requirements
None.
6.2 DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive
connector.
Gen 3.5 LPSS measured data (latest available) plus 12V max start current margins of .15A for DC and .20A for AC. All others have 10% margin added.
Table 12: ST9146802SS DC power requirements
Notes
ST9146802SS
1.5 Gbit mode
ST9146802SS
3.0 Gbit mode
(Amps) (Amps) (Amps) (Amps)
Voltage +5V +12V [2] +5V +12V [2]
Regulation [5] ±5% ±5% [2] ±5% ±5% [2]
Avg idle current DCX [1] [7] 0.79 0.15 0.77 0.15
Maximum starting current
(peak DC) DC 3σ [3] 0.87 1.59 0.85 1.59
(peak AC) AC 3σ [3] 1.22 2.01 1.43 2.02
Delayed motor start (max) DC 3σ [1] [4] 0.65 0.02 0.68 0.03
Operating current:
Typical DCX [1] [6] 0.76 0.37 0.79 0.39
Maximum DC 3σ [1] 0.78 0.40 0.83 0.43
Maximum (peak) DC 3σ 1.34 1.19 1.41 1.21