1.2.2.2 Operating conditions
The components of the SINUMERIK 840D sl system are intended for a weatherproof, fixed
location. The documented
environmental conditions apply to the climate in the immediate vicinity of the units and to the
entry of the cooling air. They exceed the requirements according to EN 60204-1, EN 61800-2,
EN 61131-2 and IEC 62477-1.
NOTICE
Damage to components by coolants and lubricants
The SINUMERIK operator components have been designed for industrial use, particularly on
machine tools and production machines. This also takes into account the use of commercially
available coolants and lubricants. The use of aggressive compounds and additives can
damage components and result in their failure.
Contact between the operator components and coolants and lubricants should be avoided
as far as possible, as resistance to all coolants and lubricants cannot be guaranteed.
Table 1-3 Ambient conditions for operation
Environmental condi‐
tions
Application areas Remarks
Climatic environmental conditions
Climate class Better than class 3K3 According to EN 60721‑3-3
Limit temperatures at
100% load
0 ... 45° C All except PCU50.5;
front-side for OP, MCP/MPP and CNC standard key‐
boards KB.
0 ... 55° C Rear-side for OP, MCP/MPP and CNC standard key‐
boards KB.
5 ... 55° C For PCU50.5
Relative humidity (with‐
out condensation)
5% to 95% (60% when corrosive gases and/or dusts are present)
Condensation, forma‐
tion of ice
Not permissible
Dripping water, spray,
splash water, jet-water
Not permissible All components, except ...
Permissible For operator panel fronts, handheld units and machine
control panels
Max. installation alti‐
tude
Up to 1,000 m above
sea level
Without thermal derating
1000 m ... 2000 m
above sea level
With insulation
2000 m ... 5000 m
above sea level
Specified clearances have been dimensioned for an
operating voltage of 50 V at 5000 m
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.
Chemically active environmental conditions Class 3C1 according to EN 60721‑3‑3
General information and networking
1.2 Application planning
Handheld Terminal HT 8
Manual, 07/2015, A5E36371621B-AB 19
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