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4.5
How to prevent measurement errors
To ensure that the device operates correctly, it is necessary to mount it accurately as de-
scribed in section 4�1 to 4�4, which includes correct mounting of the torque arm�
The radial runout of the drive shaft should not exceed 0�2 mm (0�03 mm recommended),
to prevent an angle error�
An angle error may be reduced by increasing the length of L1
L2 of the torque arm, see below, is at least equal to L1
The angle error Δρ
Δρ
= ±90°/π · R/L1
mech
with R: Radial runout in mm
L1:
Example of calculation:
For R = 0.06 mm and L1 = 69.5 mm the resulting angle error Δρ
i
For more information, call the telephone hotline at +49 (0)30 69003-111�
For this different support plates for the torque arm are available on request�
1)
If L2 < L1, L2 must be used in the calculation formula�
2)
MB248EN - 11171699, 19A2, Baumer_HMG10-PROFINET_II_EN
can be calculated as follows:
mech
Distance of the torque arm to the center point of the device in mm
MOUNTING / HOW TO PREVENT MEASUREMENT ERRORS
L1
� Make sure that the length
1)
�
2)
equals ±0�025°�
mech
12/27