Page 12
07/01/2021
R02.1
How to carry out the adjustment
At the oscillating conveying unit you will have to determine the mechanical resonant
frequency using the SIGA. For this purpose the oscillating convey-or will only be
loaded with a test part. Then you use SIGA to slowly run the drive frequency. When
there is a mechanical resonance the test part is at its maximum velocity. (Attention!
Two or more resonance positions are possible).
The main resonance position is the one showing the highest part velocity. But in this
condition the system is very soft (the transporting velocity depends on absorbing).
The output frequency at SIGA must be adjusted approx. 1,5Hz higher than the me-
chanical resonant frequency (forced oscillation). This makes the transporting system
mechanically stable and keeps the trans-porting velocity constant, also with changing
weights. The final adjustment of the transporting capacity will then be made via the
nominal value (oscillating force).
This concept does not only result in a multiplication of the efficiency by current re-
generation but also in a high stability of the transporting velocity and tremendously
facilitates the mechanical adjustment works. The output frequency of SIGA is abso-
lutely stable.
Commissioning
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Before connecting the control device SIGA the el. data of the oscillating con-
veyor to be operated are to be determined and to be compared with the tech-
nical data of the control device. The output current of 5A must not be exceed-
ed.
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Connect the oscillating conveyor to the control device. The connection be-
tween control device and oscillating conveying unit must be realized with a
shielded cable !
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Connect the mains plug into the control device.
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Switch on control device.
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Adjust via the keyboard the operating frequency of the oscillating conveyor
according to adjustment specification
