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8
PARU Mini is tuned ex works for a series of standard tooling units. The relevant physical parameters of these
add-on tools (mass, dimensions, position) are listed below.
Fig. 3: Centre of gravity coordinates of tooling for PARU Mini
Linear Feeder Type
PARU Mini XS
PARU Mini S
Ideal weight of tooling [kg]
0.7 ± 0.2
1.2 ± 0.2
Max. weight of tooling [kg]
Recommended max. length of tooling [mm]
300
500
Centre of gravity of rail Xs [mm]
90 ± 10
100 ± 10
Centre of gravity of rail Zs [mm]
81 ± 10
85 ± 10
Centre of gravity of rail Ys [mm]
0 ± 9
0 ± 10
Due to the PARU Mini’s design with individual spring legs it can be adapted to a wide range of tooling units
in addition to the ones specified above. This must be done in consultation with RNA however.
As a rule the equipment user only needs to observe the tightening torque for the tooling fasteners. For the
sake of completeness and in anticipation of potential maintenance work find below the tightening torques for
all relevant threaded assemblies of PARU Mini (all screws have property class 10.9 or better):
ISO 4762 M4 screws of leaf spring [Nm]
4.5
ISO 4762 M5 screws of leaf spring [Nm]
6.5
ISO 4762 M6 screws of leaf spring [Nm]
9
ISO 4762 M4 screws of spring leg domes [Nm]
4
ISO 4762 M5 screws of spring leg domes [Nm]
6
ISO 4762 M6 screws of spring leg domes [Nm]
8
To avoid overheating of the electromagnetic coil and ensure energy-efficient operation it is imperative that
the air gap is properly set in accordance with following table:
Air gap EU
Air gap USA
PARU Mini XS [mm]
1.0 ± 0.05 mm
1.0 ± 0.05 mm
PARU Mini S [mm]
1.2 ± 0.05 mm
1.2 ± 0.05 mm
To ensure constant feed rates even in production facilities with powerful consumers and fluctuating mains
voltages we recommend the use of optimized controllers supplied by Rhein-Nadel Automation GmbH. If you
wish to operate a PARU Mini with a third-party controller please contact Rhein-Nadel Automation.
Notice
For smooth operation some minimum requirements must be fulfilled at the site of installation. The
base must be as rigid and stable a structure as possible. We recommend a minimum mass of
20kg for PARU Mini XS and 30kg for PARU Mini S.
2.3.
Automatic mode change / pin assignment
Zs
Xs
