Description of the motors
2.2 Technical features and environmental conditions
1FK7 G2 synchronous motors
Operating Instructions, 05/2021, A5E50907562B AA
25
2.2.3
Environmental conditions
You can classify the environmental conditions according to standard DIN EN 60721-3-3 for
fixed installation locations that are weather protected. The environmental effects and their
limit values are defined in various classes in this standard.
With the exception of environmental influences "Condensation", "Low air temperature" and
"Low air pressure", you can assign SIMOTICS S servomotors to climate class 3K4.
The following temperature ranges apply for natural-cooled and forced-ventilation motors.
Table 2- 2
Environmental conditions are based on climate class 3K4
Influencing environmental variables
Unit
Value
a) Low air temperature
°C
- 15
b) High air temperature
°C
+ 40
c) Low relative humidity
%
5
d) High relative humidity
%
95
e) Low absolute humidity
g/m
3
1
f)
High absolute humidity
g/m
3
29
g) Rate of temperature change
1)
°C/min
0.5
h) Low air pressure
4)
kPa
89
i)
High air pressure
2)
kPa
106
j)
Solar radiation
W/m
2
700
k) Thermal radiation
-
-
l)
Air movement
3)
m/s
1.0
m) Condensation
-
Not permissible
n) Wind-driven precipitation
(rain, snow, hail, etc.)
-
-
o) Water (other than rain)
-
See protection
class
p) Formation of ice
-
-
1)
Averaged over a period of 5 min
2)
Conditions in mines are not considered.
3)
A cooling system based on natural convection can be disturbed by unforeseen air movements.
4)
The limit value of 89 kPa covers applications at altitudes up to 1000 m.
Note
Installation instructions
SIMOTICS S motors are not suitable for operation
• In salt-laden or aggressive atmospheres
• Outdoors
You find additional data on the environmental conditions, such as ambient temperatures or
conditions for transport and storage of the motors, in the relevant chapters of this
documentation.
