Rhein - Nadel Automation GmbH 9 Stand 14.04.2014
VT-BA-SLK-GB
Adjustment of the natural frequency
In case the linear feeders are delivered without track, they have been adjusted in the factory to
average weights of the oscillating elements. In order to guarantee an optimal conveying behaviour,
the linear feeder must be adjusted to the definite operating conditions.
The adjustment is made by adding or removing leaf springs and washers.
First check, whether the right control unit (frequency, voltage, power supply, (see table "technical
data" in chapter 1) has been connected.
Carry out the following steps:
Tighten all spring fastening screws and track fastening screws. Please take the tightening
moments of the spring fastening screws from the table technical data (chapter 1).
Check, whether the magnet corresponds to the specifications in the "technical data" (voltage,
frequency).
Measure the magnet-air gap. In case it differs from the specifications in the "technical data", adjust
it correctly.
Fill the tracks with material to be conveyed and turn the turning knob of the control unit to 90 % of
the conveying capacity.
Loosen a fastening screw at one of the spring assemblies (approx. 1/4-1/2 rotation).
In case the difference in the running speed is not recognized during loosening of the first screw, a
further lower fastening screw must slowly be loosened.
While the spring fastening screw is loosened, you can see a change in the conveying speed.
The following graphic chart shows the resonance curve of a linear feeder:
In case the conveying capacity decreases after loosening the spring fastening screw, proceed as
described under point 5.1.
In case, however, the conveying capacity, increases, proceed as described under point 5.2.
