Microsonic LCA-2 Manual do Utilizador descarregar pdf (Página 36)

Page 36 of 51 Parameter change in the double sheet control

VOLTAGE LEVEL OF THE LOGIC STATES AT THE CONTROL INPUTS

Logical state

Voltage level

pnp

npn

-UB

+ UB

- UB

MOUNTING DISTANCE

Numeric input of the spacing between transmitter and receiver.

SENSITIVITY CLASSES

The fact that the dbk+4 control inputs are unconnected or on logic 0 points to pre-selection of the

"Standard" sensitivity class where the range of sheet material weights from a typical 50 g/m

up to 800

g/m

can be scanned.

 The 3 control inputs allow the sensitivity classes to be pre-selected in keeping with the Fig 4 table.

 The "Thin" setting is to be selected for extremely thin materials, such as bible printing paper, with

weight per unit areas of under 50 g/m

 The "Thick" setting is available for sheet metals, thick plastic films, paperboard and finest

corrugated card..

 Changes between sensitivity classes can be undertaken under on-going operations.

 Pre-selecting an over-low sensitivity class can result - even with a single sheet - in a double sheet

signal appearing. In such an instance, the next-higher sensitivity class is to be pre-selected.

 Pre-selecting an over-high sensitivity class results - given a single sheet - in the double-sheet

detection indicating overcontrol at the LEDs: one LED lights up green and the other green/red

(orange blend). In such an instance, the next-lower sensitivity class is to be pre-selected.

Parameterization of the D1 switched output onto the "Overcontrol" output function achieved with

LinkControl software results in the overcontrol signal being additionally outputted on D1.

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Microsonic LCA-2 Manual do Utilizador Página 36