Seagate ST34501N ユーザーズマニュアル
18
Cheetah 4LP Installation Guide, Rev. B
Table 2.
DC power requirements (Amps)
1
Measured with an average reading DC ammeter. Instanta-
neous +12V current peaks will exceed these values.
neous +12V current peaks will exceed these values.
2
A –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.
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.
3
See the +12V current profile in the
Cheetah 4LP Product Man-
ual (publication number 83329120).
4
This condition occurs when the Motor Start option is enabled
and the drive has not yet received a Start Motor command.
and the drive has not yet received a Start Motor command.
ST34501
N, W, WC models
N, W, WC models
WD, DC models
+12V
+5V
+12V
Voltage regulation
± 5%
± 5%
± 5%
± 5%
Max. start current
Peak DC
0.88
2.2
0.89
2.2
Delayed motor start
(max)
(max)
0.81
0.08
0.72
0.08
Peak operating current
Typical DC
Maximum DC
Maximum (peak) AC
0.85
0.9
1.0
0.9
1.0
0.89
0.94
1.98
0.94
1.98
1.05
1.09
—
1.09
—
0.89
0.94
1.98
0.94
1.98