AL S
08.95
AL S/2-13
Siemens AG 1997 All Rights reserved 6SN1197–0AA20
SIMODRIVE 611 (PJ)
After investigating various drive–out couplings for servomotors in conjunction
with SIMODRIVE drive converters, we have identified, that in many cases, the
reasons for vibration problems lie in the drive–out couplings.
For this reason, we would like to recommend that ROTEX couplings, from the
KTR company, are used, which can guarantee the optimum drive–out charac-
teristics.
The advantages of ROTEX couplings are:
2 to 4x the torsional stiffness of a belt–driven gearbox
No meshing teeth (with respect to belt gearboxes)
Low moment of inertia
Optimum control characteristics
Up to the specified torques which can be transferred, mounting without key is
considered to be adequate. It should be observed, that the friction locking
torques are always adequately dimensioned, corresponding to the particular
motor frame size. Please observe that the accelerating torque must also be
transferred.
Alternatively, a clamping hub with groove, or the special version with two clamp-
ing screws can be used.
The investigations also involve the vibration characteristics. The couplings, as-
signed to the motors, permit higher gain factors in the speed control loop, which
can possibly result in higher k
V
values and more uniform motion.
For ROTEX GS, three various plastic pinion wheels, with varying Shore hard-
nesses:
80 Shore A (soft)
alternatively:
92 Shore A
alternatively:
98 Shore A (hard)
The possible adaptation to existing machine masses and stiffness must be de-
termined in conjunction with the mounted mechanical system.
The KTR company can provide technical information, delivery times and prices.
You can only order the couplings through the KTR company.
Address:
KTR
Kupplungstechnik GmbH
Rodder Damm 170;
48432 Rheine
Postfach 1763;
48407 Rheine
Tel.:
+49 05971/798–465(426)
FAX:
+49
–400
You will find the assignment of the drive couplings to the motors in the
appropriate motor chapter.
Drive–out
couplings
General information on AC servomotors
2.2 Mounted/integrated components
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