Commissioning
6.1 Safety guidelines for commissioning
Naturally cooled 1FW6 built-in torque motors
Operating Instructions, 07/2017, 6SN1197-0AF02-0BP2
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WARNING
Uncontrolled rotation for inclined and horizontal axes
Torque motors are not self clamping. For inclined and horizontal axes in the no current
state, if the center of gravity lies outside the axis of rotation and there is no weight
equalization, then load can move downwards in an uncontrolled fashion. This can result in
injury and material damage.
•
Use a holding brake for inclined and horizontal axes that are not equipped with weight
equalization.
NOTICE
Damaged main insulation
In systems where direct drives are used on controlled infeeds, electrical oscillations can
occur with respect to ground potential. These oscillations are, among other things,
influenced by:
•
The lengths of the cables
•
The rating of the infeed/regenerative feedback module
•
The type of infeed/regenerative feedback module (particularly when an HFD
commutating reactor is already present)
•
The number of axes
•
The size of the motor
•
The winding design of the motor
•
The type of line supply
•
The place of installation
The oscillations lead to increased voltage loads and may damage the main insulation!
•
To dampen the oscillations we recommend the use of the associated Active Interface
Module or an HFD reactor with damping resistor. For specific details, refer to the
documentation of the drive system being used or contact your local Siemens office.
Note
Use an Active Interface Module or the matching HFD line reactor
Please note the following when connecting the motor to a SINAMICS S120 drive system:
The corresponding Active Interface Module or the appropriate HFD line reactor must be used
to operate the Active Line Module controlled infeed unit.
Note
Voltage Protection Module VPM
Above a speed defined for a particular motor type, each motor requires a Voltage Protection
Module VPM; also see Configuration Manual "Naturally cooled SIMOTICS T-1FW6 Built-in
Torque Motors".
