Installation Guide Linear Rotary Motors
ENG
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PR02-70
NTI AG / LinMot
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The force sensor is used to measure compressive and tensile forces. The measured
variable is suitable for control, regulation and monitoring tasks.
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Force peaks exceeding the permissible overload (see information in the PR02 data
sheet) can lead to destruction of the force sensor. Where such peaks cannot be safely
excluded, they must be mitigated.
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When changing between increasing and decreasing forces, the force sensor may show
a small hysteresis. This can lead to the sensor exceeding the specified accuracy at the
change point.
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Due to the static friction in the system, the force sensor measures more accurately if the
force vector always points in the same direction during repeated measurement
(influence of force hysteresis).
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To increase the measuring accuracy, linear rotary motors with integrated force sensor
technology are supplied without sealing lips / wipers.
•
Simultaneous rotation and measurement of the force can falsify the measurement (e.g.
due to increased friction of the linear rotary shaft).
•
The operating temperature range of the sensors is 5 - 45 °C. Above or below the limits,
there is a measurement error which influences the measurement results. It is
recommended to set the offset to zero before each measuring process.
•
The max. operating range is between 0 - 80 °C.
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For continuously precise measurement results, it is recommended to calibrate the force
sensor annually according to section 8.3.
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Recalibration is also strongly recommended after improper handling of the force
sensors (e.g. impacts on the stroke rotating shaft or large overload).
3.10
Option Stainless Steel Front Flange (SSC)
The stainless steel front flange option offers the user hygiene at the highest level. Linear rotary motors with
this option can be used in machines and systems for processing food products or in the pharmaceutical and
medical industries. With this option, the user benefits from a partially increased IP degree of protection as
well as the possibility to use the front of the linear rotary motor even in extremely rough or corrosive
environments where aggressive cleaning agents are used.
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The exact list of materials used can be found in chapter 4.4.
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The user is obliged to check whether the cleaning agents used are compatible with the
materials of the stainless steel front flange.
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The stainless steel front flange may only be cleaned when the axle is at a standstill. It is
recommended that cleaning is carried out with the linear rotary shaft extended.
The linear rotary shaft must be dried before it is put back into operation.
•
Any parts that do not belong to the zone of the stainless steel front flange may not be
corrosion-resistant and can therefore only be cleaned to a limited extent. They have a
reduced IP degree of protection.
•
The specified IP degree of protection is achieved at standstill.
