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Siemens SIMODRIVE 6SN11 Series Planning Manual page 32

Ac motors for feed and main spindle drives

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General Information on AC Servomotors
2.2 Mounted/integrated components
2.2
ALS
Effects
ALS/2-22
Mounted/integrated components
When the motor is mounted onto a flange, some of the motor power loss is dis-
sipated through the flange.
S
Mounting design which is not thermally insulated
The following mounting conditions are valid for the motor data shown:
Table 2-9
Shaft height
28 to 48
63 to 132
The heat dissipation conditions are improved for larger mounting surfaces.
S
Thermally insulated mounting without additional mounting compo-
nents
The motor torque must be reduced by between 5 % and10 %. We recom-
mend that the system is configured using the M
M [Nm]
(100 K)
100 %
approx. 85 %
to 95 %
Fig. 2-7
S1 characteristics
S
Thermally insulated mounting with additional mounted components
– Holding brake (integrated in the motor)
Additional torque reduction is not required
– Gearboxes
The torque must be reduced (refer to the diagram above)
Instructions on the rating plate: "reduce rating with gearing"
Dimensioning information regarding the required motor size is povided in the
following section.
Mounting conditions, non–thermally insulated mounting
Steel plate
width x height x thickness
120 x 100 x 40
450 x 370 x 30
without gearbox
 Siemens AG 2000 All rights reserved
SIMODRIVE Planning Guide Motors (PJM) – 11.00 Edition
Mounting surface
2
[m
]
0.012
0.17
(60k) values.
0
Non–insulated
mounting
Insulated mounting
n [RPM]
with gearbox
6SN1197–0AA20
09.00

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