7.5 DC power requirements
The following voltage specification applies at the drive power connector. Connections to the drive should
be made in a safety extra low voltage (SELV) circuit. There is no special power on/off sequencing
required.
Adequate secondary over-current protection is the responsibility of the system. A limit of 10 A is required
for safety purposes.
7.5.1 Input voltage
0-400 ms
15 V
12 V ± 5% *
+12 volts supply
0-200 ms
5.5 V
5 V ± 5%
+5 volts supply
Supply rise time
Absolute max
spike voltage
During run and
spin up
Figure 30. Input voltage
* NOTE: –8% is acceptable during spin up, but the spin up time is not guaranteed.
CAUTION: To avoid damage to the drive electronics, power supply voltage spikes must not exceed
5.5 V.
7.5.2 Power supply current
Note: Seek power is at 50 IOPS and R/W power is at 30 IOPS with 4 KB R/W.
14.9
0.03
0.97
0.02
0.66
Random R/W average
n/a
0.10
2.40
0.10
1.40
Random R/W peak
n/a
0.13
2.40
0.03
1.07
Start up (max)
n/a
0.10
2.40
0.05
0.91
Seek peak
16.0
0.03
1.10
0.02
0.55
Seek average
n/a
0.10
0.42
0.02
0.22
Idle ripple (peak-to-peak)
10.2
0.03
0.64
0.02
0.50
Idle Average
Total (W)
+12 Volts
Std. Dev
+12 Volts
Pop Mean
+5 Volts
Std. Dev
+5 Volts
Pop Mean
146-GB models
(All values in Amps.)
Figure 31. Power supply current of 146-GB models
12.8
0.03
0.79
0.02
0.66
Random R/W average
n/a
0.10
2.23
0.10
1.40
Random R/W peak
n/a
0.13
2.23
0.03
1.07
Start up (max)
n/a
0.10
2.23
0.05
0.91
Seek peak
13.8
0.03
0.92
0.02
0.55
Seek average
n/a
0.10
0.40
0.02
0.22
Idle ripple (peak-to-peak)
7.7
0.03
0.43
0.02
0.50
Idle Average
Total (W)
+12 Volts
Std. Dev
+12 Volts
Pop Mean
+5 Volts
Std. Dev
+5 Volts
Pop Mean
73-GB models
(All values in Amps.)
Figure 32. Power supply current of 73-GB models
Ultrastar 146Z10 hard disk drive specifications
32
Содержание IC35L018UCDY10
Страница 2: ...This page intentionally left blank ...
Страница 16: ...Ultrastar 146Z10 hard disk drive specifications xiv ...
Страница 20: ...This page intentionally left blank ...
Страница 21: ...Part 1 Functional specification Ultrastar 146Z10 hard disk drive specifications 5 ...
Страница 22: ...This page intentionally left blank ...
Страница 24: ...This page intentionally left blank ...
Страница 34: ...This page intentionally left blank ...
Страница 36: ...This page intentionally left blank ...
Страница 63: ...Part 2 Interface specification Ultrastar 146Z10 hard disk drive specifications 47 ...
Страница 64: ...This page intentionally left blank ...