Instruction manual

2. Preparation for Installation
78
2.2.2 Environmental Conditions
The environmental conditions of the device are listed below.
Table 2-8 Environmental Conditions
*1 Measured value according to ISO 7779.
*2 When PoE supply is turned off.
*3 Fan speed is controlled according to the intake air temperature, which causes the noise level to vary.
*4 According to JIS Z 8813 Measuring Methods for Suspended Particulate Matter Concentration in Air - General Requirements.
*5 No condensation
Item
Requirement
Device EPU
AC power model
DC power model
AC (PoE)
model
Power redundancy
model
EPU-A EPU-B
Noise
*1
45 dB or less
50 dB or less
*2
25 deg. C: 35 dB or
less
*3
40 deg. C: 45 dB or less
45 dB or less
50 dB or less
*2
Vibration
2.45 m/s
2
or less
Dust
0.15 mg/m
3
or less
*4
Temperature Operating 0 to 40 deg. C (23 to 28 deg. C recommended)
Not operating :
to + to +
-10 to 43 deg. C
Storage and
transportation
-25 to 65 deg. C
Humidity
*5
Operating 10 to 85 % (45 to 55 % recommended)
Not operating 8 to 85%
Storage and
transportation
5 to 85%