Hitachi HTS725050A9A364 Datasheet download pdf (Page 34)

7K500 OEM SPECIFICATION

Page 34 of 176

6.5

6.56.5

6.5 Vibration and shock

Vibration and shockVibration and shock

Vibration and shock

All vibration and shock measurements in this section are for drives without mounting attachments for

systems. The input level shall be applied to the normal drive mounting points.

Vibration tests and shock tests are to be conducted by mounting the drive to a table using the bottom four

mounting holes.

6.5.1

6.5.16.5.1

6.5.1

Operating

OperatingOperating

Operating vibration

vibration vibration

vibration

The drive will operate without a hard error while being subjected to the following vibration levels.

6.5.1.1

6.5.1.16.5.1.1

6.5.1.1 Random vibration

Random vibrationRandom vibration

Random vibration

The test consists of 30 minutes of random vibration using the power spectral density (PSD) levels below.

The vibration test level is 6.57 m/sec

RMS

(Root Mean Square) (0.67 G RMS).

Random vibration PSD profile Breakpoint

m x 10n (m

/sec

)/Hz

5 1.9 x E–3

17 1.1 x E–1

45 1.1 x E–1

48 7.7 x E–1

62 7.7 x E–1

65 9.6 x E–2

150 9.6 x E–2

200 4.8 x E–2

500 4.8 x E–2

Table 17. Random vibration

PSD profile breakpoints (operating)

6.5.1.2

6.5.1.26.5.1.2

6.5.1.2 Swept sine vibration

Swept sine vibration Swept sine vibration

Swept sine vibration

(zero to peak 5 to

500 to 5 Hz sine wave)

Sweep rate

(oct/min)

9.8 m/sec

(1 G) (5-500 Hz) 1.0

Table 18. Swept sine vibration

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 175 176

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Hitachi HTS725050A9A364 Datasheet Page 34

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