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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.
2.2.4
Degree of protection
1FK7 DYA G2 motors are available with an IP64 degree of protection.
2.2.5
Noise emission
The geared motors are certified for a wide range of installation and operating conditions.
These conditions such as rigid or vibration-isolated foundation design influence noise
emission, sometimes significantly.
The circumferential velocity of the motor pinion has a significant influence on the additional
gearbox noise. This is the reason that higher speeds or low transmission ratios result in
higher noise.
Note
External noise
Noise not generated by the gearbox but emitted from it is not taken into consideration.
Noise emitted by the drive and driven machines or the base are not taken into consideration.
When operated in the speed range 0 to rated speed, 1FK7 DYA G2 motors can reach the
following measuring-surface sound pressure level Lp(A):
Table 2- 4
Geared motor (under no-load condi-
tions)
S-1FK7 DYA G2 synchronous motors with planetary gearbox
Operating Instructions, 05/2018, A5E44881183B AA
Sound pressure level
2.2 Technical features and environmental conditions
1FK703 with
NP015
dB(A)
≤ 65
Description of the motors
1FK704 with
1FK706 with
NP025
NP035
≤ 65
≤ 68
27
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