SIEMENS
1/48
Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Measuring-surface sound pressure level
■
Overview
The table below lists the measuring-surface sound pressure
level
L
pfA
as well as the sound power level
L
WA
for motors of the
1PS0 type series without explosion protection and the 1PS4,
1PS5 and 1MD5 type series with the type of protection
“Explosion-proof enclosure.” The noise values apply to no-load
operation at a rated frequency of 50 Hz. The noise measure-
ments are performed according to EN ISO 1680 in a noise
measuring chamber under no-load conditions. The tolerance is
+3 dB(A). Noise values in converter operation may differ from
these values, because the speed can vary and an increase in
the noise level can be expected due to the non-sinusoidal
voltages and currents.
At 60 Hz, the values for 2-pole motors increase by approximately
5 dB(A), and for 4-pole motors or higher pole numbers by
approximately 4 dB(A).
For a rated frequency of 50 Hz and operation on the
SINAMICS G180 converter, the sound pressure level will
increase by approximately 3 dB(A). Noise data is not available
for operation on other SINAMICS types.
Noise values in converter operation are also dependent on the
operating point of the application and the parameter settings
(e.g. clock frequency) of the converter. Noise values can
therefore only be given provisionally for a system controlled
by a PWM converter (pulse width modulation).
As the frequency/speed decreases, the noise level is reduced.
Experience has shown that, with high-quality converters, many
motors under real operating conditions that frequently involve
lower speeds and lower power, generate less noise than a
comparable motor in line operation.
Measuring-surface sound pressure level
L
pfA
and sound power level
L
WA
in no-load operation at fixed voltage for 1PS0, 1PS4, 1PS5 and
1MD5 motors
Frame size
Motors in standard design –
noise class 1
Low-noise motors with fans for one
direction of rotation – noise class 3
1)
2-pole
4-pole
6-pole
8-pole
2-pole
4-pole
3000 rpm
1500 rpm
1000 rpm
750 rpm
3000 rpm
1500 rpm
L
pfA
L
WA
L
pfA
L
WA
L
pfA
L
WA
L
pfA
L
WA
L
pfA
L
WA
L
pfA
L
WA
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
LOHER CHEMSTAR 1PS0, 1PS5 and SIMOTICS XP 1MD5 motors
71
54
65
46
57
48
59
45
56
–
–
–
–
80
57
68
49
60
48
59
50
61
–
–
–
–
90
62
74
50
61
52
63
52
63
–
–
–
–
100
64
76
54
66
52
64
52
64
–
–
–
–
112
65
77
54
66
55
67
55
67
–
–
–
–
132
68
80
62
74
57
69
57
69
56
68
–
–
160
70
82
65
77
60
72
60
72
61
73
–
–
180
71
84
66
79
61
74
63
76
62
75
–
–
200
75
88
66
79
61
74
63
76
66
79
–
–
225
76
89
69
82
62
75
64
77
67
80
–
–
250
76
90
71
85
62
76
64
78
67
81
–
–
280
78
92
73
87
66
80
66
80
68
82
–
–
315
80
94
73
87
68
82
71
85
70
84
–
–
355
80
–
77
–
77
89
74
87
77
92
75
–
LOHER VARIO
2)
1PS0, 1PS4 and 1PS5 motors
355
78
93
76
91
74
89
75
90
74
89.5
–
–
400
80
95.5
78
93.5
77
92.5
77
92.5
77
93
75
91
450
82
98
80
96
79
95
79
95
79
95
77
93
500
–
–
82
98.5
80
96.5
79
95.5
81
97.5
79
95.5
1)
The motor length (dimension L or LC) increases for noise class 3.
2)
LOHER VARIO 2-pole and 4-pole motors are equipped as standard with
unidirectional fans.
© Siemens AG 2016