Noise Emission; Derating Factors - Siemens SIMOTICS S-1FK2 Operating Instructions Manual

Description of the motors
2.2 Technical characteristics and ambient conditions
Motor shaft sealing
①
Moisture in the area around the shaft and the
flange is not permissible.
Note:
For IP64, it is not permissible that liquid collects
in the flange.
More information is provided in Chapter "Shaft extension (Page 34)".
2.2.5

Noise emission

When operated in the speed range 0 to rated speed, 1FK2 motors can reach the following
measuring surface sound pressure level L
Table 2-2
The motors are approved for numerous installation and operating conditions. These conditions
such as rigid or vibration-isolated foundation design influence noise emission, sometimes
significantly.
2.2.6

Derating factors

Due to the decreasing air pressure in higher installation altitudes, the cooling of the motor
deteriorates. Therefore, reduce the power of the motor as the installation altitude increases.
Multiply the permissible torques or powers by the factors from the following table.
26
IP64
Ball bearing with sealing washers
Sound pressure level
Cooling method
Naturally cooled
①
Radial shaft sealing ring without annular spring
Sealing of the shaft outlet against splashwater and/or
cooling-lubricating medium. Dry running of the radial
shaft sealing ring is permissible. Service life approx.
25000 h (guide value).
With degree of protection IP65, it is not permissible for
liquid to collect in the flange.
:
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Frame size Enveloping surface sound pressure level L
1FK2☐03
1FK2☐04
1FK2☐05
1FK2☐06
1FK2☐08
1FK2☐10
SIMOTICS S-1FK2 synchronous motors for SINAMICS S120
Operating Instructions, 02/2022, A5E46089564B AD
IP65
55 dB(A) + 3 dB tolerance
65 dB(A) + 3 dB tolerance
70 dB(A) + 3 dB tolerance
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