Siemens SIMOTICS S-1FK7 - Degree of Protection; Noise Emission

Description of the motors
2.2 Technical features and environmental conditions
1FK7 G2 synchronous motors
26 Operating Instructions, 05/2021, A5E50907562B AA
2.2.4 Degree of protection
1FK7 motors are available with IP64 or IP65 degree of protection. The degree of protection of
the motor is specified on the rating plate.
2.2.5 Noise emission
When operated in the speed range 0 to rated speed, 1FK7 motors can reach the following
measuring-surface sound pressure level Lp(A):
Table 2- 3 Sound pressure level
Cooling method Shaft height
Measuring-surface sound pressure
level Lp(A)
Naturally cooled
1FK703 to 1FK704
55 dB(A) + 3 dB tolerance
1FK706
65 dB(A) + 3 dB tolerance
1FK708 to 1FK710
70 dB(A) + 3 dB tolerance
Forced-ventilated
1FK708
73 dB(A) + 3 dB tolerance
The 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.