Mounting The Load Cells - ABB PFEA 111 User Manual

Tension Electronics PFEA111/112, User Manual
Appendix E PFTL 101 - Designing the Load Cell Installation
E.7 Mounting the Load Cells
Alternative
1
Alloyed steel screws
Strength class according to ISO 898/1
(Recommended)
2
Alloyed steel screws
Strength class according to ISO 898/1
(Recommended)
Stainless steel (A2-80)
3 or acid resistant steel (A4-80),
Strength class according to ISO 3506
Stainless steel (A2-80)
4 or acid resistant steel (A4-80),
Strength class according to ISO 3506
E-8
The instructions below apply to a typical mounting arrangement. Variations are allowed,
provided that the requirements of
If it is necessary to use tubular dowel pins to secure the position of the load cell,
see instructions in Figure E-3.
1. Clean the foundation and other mounting surfaces.
2. Fit the lower adapter plate to the load cell.
Tighten the screws to the torque stated in
3. Fit the load cell and the lower adapter plate to the foundation,
but do not fully tighten the screws.
4. Fit the upper adapter plate to the load cell.
Tighten the screws to the torque stated in
5. Fit the bearing housing and the roll to the upper adapter plate,
but do not fully tighten the screws.
During this operation it is possible to over load the load cells if the operation is
done not careful enough, especially if the roll is heavy. The most critical load
cells are naturally the PFTL 101A-0.5 kN and PFTL 101B-2 kN. Applications
with inclined mounting are most critical.
6. Adjust the load cells so that they are in parallel with each other and in line with the axial
direction of the roll. Tighten the foundation screws, see
7. Adjust the roll so that it is at right angles to the longitudinal direction of the load cells.
Tighten the screws in the upper adapter plate, see
Table E-1. Tightening Torques for Load Cell PFTL 101
Type of screws
Section E.4, Installation Requirements
Table E-1.
Table E-1.
CAUTION
Table
Strength Type of
class lubrication
12.9 Oil
12.9 MoS
2
A2-80
or Wax
A4-80
A2-80 Oil
or or
A4-80 emulsion
are complied with.
Table E-1.
E-1.
Tightening
Dimension torque
[Nm] ± 5%
M12 136 Nm
M16 333 Nm
M20 649 Nm
M12 117 Nm
M16 286 Nm
M20 558 Nm
M12 76 Nm
M16 187 Nm
M20 364 Nm
M12 65 Nm
M16 161 Nm
M20 313 Nm
3BSE029380R0101 Rev C