Basic type of construc‐
tion code
Diagram  
IMB35(IM2001)  
IMB34(IM2101)  
3.3.7 Degree of protection
The machine has a type of protection as stamped on the rating plate, and can be installed in 
dusty or humid environments.
3.3.8 Environmental conditions
Limit values for the standard version
Relative humidity for ambient temperature T
amb
 
40°C
Max. 55 %
Ambient temperature -20°C to +40°C
Installation altitude ≤1000 m
Air with normal oxygen content, usually  21% (V/V)
The standard machines are not suitable for use in corrosive atmospheres, atmospheres with a 
high salt content, or outdoor applications.
Limit values for the special versions
If the environmental conditions are dierent from the details listed here, then the values on 
the rating plate or in the catalog will apply. 
3.3.9 Optional built-on and built-in accessories
Machines can be equipped with the following integrated components/devices:
• Temperature sensors integrated in the stator winding in order to monitor the temperature 
and protect the stator winding from overheating.
• Anti-condensation heating for machines whose windings are subject to a risk of 
condensation due to the climatic conditions.
Machines can be equipped with the following mounted components/devices:
• Brake
• Rotary pulse encoder
• External fan (forced ventilation)
Description
3.3Installation
1LE5, 1PC4 shaft heights 280 ... 355
Operating Instructions, 11/2022, A5E41454666A 31