SIEMENS
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Siemens CR 1 · 2015
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Technical specifications
(continued)
SIMOTICS motors for cranes
General technical specifications
Types to EN 60034-7/IEC 60034-7
Hoisting gear motors are primarily used in construction types
IM B3, IM B5, IM V1, and IM B35, although they can be supplied
in other construction types (please inquire).
The individual sections in this catalog provide information about
the listed available construction types of the various motor se-
ries.
Insulation
The insulation system protects the winding against aggressive
gases, vapors, dust, oil and increased air humidity. It can with-
stand the vibration stresses and ambient conditions that nor-
mally occur in hoisting operations.
Temperature classes
In EN 60034-1, the winding insulation (incl. impregnating mate-
rial) is classified into temperature classes which are assigned
specific overtemperatures.
The motor output specifications are uniformly based on a
coolant temperature of 40 °C at an installation altitude of 1000 m
above sea level for all insulation classes. The various sections in
this catalog provide information about the permissible outputs
under other ambient conditions.
Temperature limit in K according to temperature class
Mechanical balance quality
Dynamic balancing
All rotors in hoisting gear motors are dynamically balanced with
an inserted half featherkey. This corresponds to vibration seve-
rity grade A (normal). EN 60034-14 specifies the factory accep-
tance vibration test procedures and vibration limits for electrical
machines. "Half-key balancing" (half featherkey = code H) is
specified here based on ISO 8821.
Full-key balanced machines can also be shipped as special
versions (please inquire).
Note for 1LP and 1LG three-phase squirrel-cage motors:
Low-vibration version B can be supplied to fulfill stricter require-
ments on smooth running. For converter-fed operation with
frequencies greater than 60 Hz, special balancing is required for
compliance with the specified limit values (plain text: maximum
supply frequency/speed).
Vibration severity
The vibration severity is the r.m.s. value of the vibration velocity
(frequency range from 10 to 1000 Hz).
A motor balanced in accordance with the relevant standard,
however, may vibrate more strongly at the operating site.
This can be caused by the following factors:
•
Unsuitable foundation
•
Interference from the driven machine
•
Components with a natural frequency that is almost identical
to the frequency of the residual unbalance of the motor.
In cases such as these, each element in the system – not just the
motor itself – needs to be checked.
The table below shows the limit values of electrical machines in
accordance with EN 60034-14 Sept. 2004.
The balancing type is stamped on the face of the DE
1)
shaft
extension:
•
F
= Balancing with full featherkey
•
H = Balancing with half featherkey
•
N = Balancing without featherkey
EN 60034-7
Code I
IM B3
IM B35
IM B5
IM V1
IM V5
IM V6
IM B6
IM B7
IM B8
IM V3
EN 60034-7
Code II
IM 1001
IM 2001
IM 3001
IM 3011
IM 1011
IM 1031
IM1051
IM 1061
IM 1071
IM 3031
Temperature class
B
F
H
Temperature limit
80 K
105 K
125 K
Limits (rms values) of max. vibration variables of vibration displacement
s
, vibration velocity
v
and acceleration
a
for the shaft height H
Vibration severity grade
Machine installation
Shaft height H in mm
56
<
H
≤
132
132
<
H
≤
280
H
280
s
rms
v
rms
a
rms
s
rms
v
rms
a
rms
s
rms
v
rms
a
rms
μ
m
mm/s
mm/s
2
μ
m
mm/s
mm/s
2
μ
m
mm/s
mm/s
2
A
Free suspension
25
1.6
2.5
35
2.2
3.5
45
2.8
4.4
Rigid clamping
21
1.3
2.0
29
1.8
2.8
37
2.3
3.6
B
Free suspension
11
0.7
1.1
18
1.1
1.7
29
1.8
2.8
Rigid clamping
–
–
–
14
0.9
1.4
24
1.5
2.4
1)
DE is the motor's drive end with shaft. NDE is the motor's non-drive end.
© Siemens AG 2015