Motor components and options
4.2 Options
1FN3 linear motors
Configuration Manual, 10/2018, 6SN1197-0AB86-0BP2
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Due to latching forces, the motors can be pulled into a preferred magnetic position if the
motor is no longer supplied with power from the drive. If the drive is already at a standstill,
this can cause unexpected movements in up to a half magnetic pole pitch in both directions.
To prevent possible damage to the workpiece and/or tool, the use of a holding brake may be
appropriate.
Due to the missing mechanical self-locking, a holding brake should be provided in case of
inclined or vertical drives without weight compensation so that the drive can be shut down
and de-energized in any position.
A holding brake may also be required if:
● The bearing friction does not compensate or exceed the latching forces and unexpected
movements result
● Unexpected movements of the drive can lead to damage (e.g. a motor with a large mass
also achieves a large kinetic energy)
● Weight-loaded drives must be shut down and de-energized in any position
The following options exist for motors of the 1FN3 product family:
● Precision cooler:
– Additional cooler to minimize the heat transfer to the machine in accordance with the
Thermo-Sandwich® principle
– Recommended for applications with high precision requirements
● Secondary section cover:
– Mechanical protection for secondary sections
– Stainless steel plate that can be magnetized (thickness d = 0.4 mm)
– Adheres to secondary sections
– Can be removed without tools if worn
– Available as a continuous band or as a segmented cover with fixed lengths
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