AL S
08.95
AL S/2-4
Siemens AG 1997 All Rights reserved 6SN1197–0AA20
SIMODRIVE 611 (PJ)
Degree of protection:
Motors with separately–driven fan fulfill, acc. to EN 60529, degree of protection
IP 64. The IP 65 or IP 67 option cannot be fulfilled if a separately–driven fan is
used.
The motor– and shaft height specific version and a description of how the sepa-
rately–driven fan is connected, is described in the special motor chapters.
The following features regarding non–ventilated motors remain unchanged:
Encoder system
Holding brake
Type of construction, flange dimensions
Vibration– and shock stressing
Vibration characteristics
Moments of inertia
Natural torsion– and shaft bending frequencies
Bearing design
The bearings are sealed on both sides and are permanently lubricated. The
bearings are designed for operation at a minimum ambient temperature of –15
°
C.
The specific versions can be taken from the motor data.
Note
We recommend that the bearings are replaced after approx. 20 000 operating
hours, however, at the latest after 5 years.
Table 2-3
Differences in the various cylindrical shaft ends
Characteristics
DIN 748
Shaft end with key
(Type a)
DIN 748
Shaft end without
keyway (Type b)
Keyway and key (DIN 6885)
X
Force–locked
X
Friction–locked, smooth shaft (e.g.
shrink connection, clamping sets etc.)
X
No play
X
Favorable for reversing operation and
fast acceleration
X
Standard for the motors
1FT5
1FT6 and 1FK6
Optional for the motors
1FT6 and 1FK6
1FT5
Dimensions, refer to the dimension drawings in the specific motor chap-
ters!
Bearing design
Shaft end
General information on AC servomotors
2.1 Definitions
01.98
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