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Specifications
2.5.2
Temperature & Humidity
Operating ambient temperature
Max base casting temperature
S.M.A.R.T. temperature value
Humidity
Thermal Gradient
Humidity Gradient
Non-operating Temperature
Humidity
Thermal Gradient
Humidity Gradient
1
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. The
system environment must allow sufficient air flow to limit maximum surface temperatures as defined.
2
See Figure 2-3 Actual drive case temperature should be below 60°C and within the 5-55°C operating ambient
temperature.
3
Unless still in WD's factory sealed bag which allows up to 40°C without limit.
2.5.3
Drive component temperatures measured at the drive baseplate thermocouple location must remain
within the limits specified in Table 2-5. Figure 2-3 shows the temperature measurement location.
Sustained operation at temperatures in excess of the reliability values degrades the MTBF rating. Short
excursions up to, but not exceeding, the maximum values will not affect the MTBF rating. Maximum
component temperature ratings must not be exceeded under any operating condition, or product
warranty will be void.
Table 2-5. Maximum and Reliability Operating Temperature Limits (Drive Baseplate)
Component
Drive baseplate
1
Sustained operation at temperatures in excess of the reliability values degrades the MTBF rating.
Figure 2-3. Drive Base Casting Thermocouple Location
14
Temperature and Humidity
1
5°C to 55°C
2
60°C
reported within ±3°C
5-95% RH non-condensing
30°C (maximum wet bulb)
20°C/hour (maximum)
20%/hour (maximum)
-40°C to 70°C
5-95% RH non-condensing
35°C (maximum wet bulb) for up to 21 days
30°C/hour (maximum)
20%/hour (maximum)
Temperature Measurement
Location
See Figure 2-3
RELEASED 8/13/13
3
Maximum
Reliability
60°C (140°F)
2679-771339-A05
EX800M
1
40°C
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