Afag BF15 Tradução do manual de instruções original - Página 14

Procurar online ou descarregar pdf Tradução do manual de instruções original para Accionamentos DC Afag BF15. Afag BF15 19 páginas. Bowl feeder

5 Operating instructions

No further settings are required for standard operation once the control is switched on.

An uninterrupted operation only requires the re-filling of the bowl.

The bulk material must be filled into the middle of the conveyor

bowl. Otherwise the orientation system might be damaged or the

required capacity might not be achieved as falling parts can get

jammed in the orientation system.

Under certain circumstances an inadmissible noise level may oc-

cur (e.g. when opening the cover of the noise protection hood for

filling in parts).

Required behaviour:

Wear ear protection when working at critical sound levels

5.2

The BF is a spring and mass vibration system that operates on the basis of its resonance

properties. All basic devices are set by the manufacturer to the mass moment of inertia

and weight values specified in section 3.3. If you comply with these values and toleranc-

es, there will be no need to adjust the BF.

However, if you fail to comply with these values, the inherent frequency of the BF will

have to be adjusted accordingly. Once the assembled feeder bowl has been mounted,

the inherent frequency of the drive unit must be tuned to the feeder bowl. The bowl feed-

er must always be adjusted 'sub- critically', in other words, the inherent frequency

must be approximately 5% above the exciter frequency. For a 100 Hz feeder this trans-

lates to an inherent frequency of around 104 Hz (6000 vibrations per minute), for a 120

Hz feeder to one of around 126 Hz (7200 vibrations per minute).

The fully set-up feeder bowl must be bolted to the basic device to allow the drive unit to

be tuned. Proceed as follows to tune the drive unit to the specific application:

1. Unscrew the cover from the BF and mount the feeder bowl on to the drive unit.

2. Place a part into the feeder bowl and use the control unit to set a low transport

speed.

3. Slowly loosen the lower mounting screw at one of the three spring assemblies on

the bowl side and watch the transport speed of the part inside the bowl.

4. If the transport speed increases initially at first and then decreases again as the

screw is loosened further, the drive unit is correctly tuned and the inherent fre-

quency is slightly above the exciter frequency.

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CAUTION

2014-11-10

Release: 4.3