Operating Conditions - Siemens SINUMERIK ONE NCU 1740 Equipment Manual

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
Climatic ambient conditions
Climate class
Limit temperatures at
100% load
Relative humidity
(without condensa‐
tion)
Condensation, icing,
drip, spray and splash
water
Max. installation alti‐
tude
Air pressure
Biological, chemical and mechanical influences, pollutants
Biological environmental conditions
Mechanically active environmental conditions
Classification of the mechanical
environment
Vibratory load
Shock load with shock-sensitive components
Pollution degree
Type of enclosure
Overvoltage category
EMC conducted / radiation
NCU 1740
Equipment Manual, 10/2021, A5E51087503B AA
Ambient conditions for operation
Application areas
Better than class 3K3 According to EN 60721‑3-3
0° C ... 55° C
5% to 95% (60% when corrosive gases and/or dusts are present)
Not permitted
1 000 m above sea
level
2000 m above sea
level
> 2000 m ... 4000 m
above sea level
620 ... 1060 hPa
5.2 Climatic and mechanical environmental conditions
Remarks
From an altitude of 2000 m, the max. ambient temper‐
ature decreases by 7° C for every 1 000 m increase in
altitude - derating.
Without thermal derating
With insulation
Clearances for an operating voltage of 50 V at 5000 m
Class 3B1 according to EN 60 721‑3‑3:
Mold, mold growth, slime, rodents, termite and other
animal vermin are not permissible.
Class 3S1 according to EN 60721‑3‑3:
Conductive dust not permitted.
3M1
Frequency range: 10 – 200 Hz
Deflection at 10 – 58 Hz: 0.075 mm
Acceleration at 58 – 200 Hz: 1 g
Acceleration: 5 g
Shock duration: 30 ms
Load: 3 x in each direction
2 (for indoor use only)
Open type
OVC 2
Class C2 according to EN 61800-3
Application planning
45