Siemens SINUMERIK ONE NCU 1740, Руководство по эксплуатации оборудования

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5.2.2 Operating conditions
The components of the SINUMERIK ONE system are intended for a weatherproof, fixed location.
The documented ambient conditions apply to the climate in the immediate vicinity of the units
and to the entry of the cooling air. The following standards are complied with: EN 60204-1,
EN 61800-2, EN 61131-2 and IEC 62477-1.
Table 5-2 Ambient conditions for operation
Ambient conditions Application areas Remarks
Climatic ambient conditions
Climate class
Better than class 3K3 According to EN 60721‑3-3
Limit temperatures at
100% load 0° C ... 55° C From an altitude of 2000 m, the max. ambient temper‐
ature decreases by 7° C for every 1 000 m increase in
altitude - derating.
Relative humidity
(without condensa‐
tion) 5% to 95% (60% when corrosive gases and/or dusts are present)
Condensation, icing,
drip, spray and splash
water Not permitted
Max. installation alti‐
tude 1 000 m above sea
level Without thermal derating
2000 m above sea
level With insulation
> 2000 m ... 4000 m
above sea level Clearances for an operating voltage of 50 V at 5000 m
Air pressure 620 ... 1060 hPa
Biological, chemical and mechanical influences, pollutants
Biological environmental conditions
Class 3B1 according to EN 60 721‑3‑3:
Mold, mold growth, slime, rodents, termite and other
animal vermin are not permissible.
Mechanically active environmental conditions Class 3S1 according to EN 60721‑3‑3:
Conductive dust not permitted.
Classification of the mechanical
environment 3M1
Vibratory load Frequency range: 10 – 200 Hz
Deflection at 10 – 58 Hz: 0.075 mm
Acceleration at 58 – 200 Hz: 1 g
Shock load with shock-sensitive components Acceleration: 5 g
Shock duration: 30 ms
Load: 3 x in each direction
Pollution degree 2 (for indoor use only)
Type of enclosure Open type
Overvoltage category OVC 2
EMC conducted / radiation Class C2 according to EN 61800-3
Application planning
5.2 Climatic and mechanical environmental conditions
NCU 1740
Equipment Manual, 10/2021, A5E51087503B AA
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