User guide

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05 141

5 Function blocks

5.2 L_CamContactor - cam group with switch-on and switch-off dynamisation

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5.2.1 Typical application

Via the function of the cam group binary output signals with a reference to curves can be generated

very simply.

Via digital switch cams for instance the quick control of external valves, glue nozzles, or similar pe-

ripheral elements can be carried out, which are connected to the digital outputs of the controller for

this purpose. Of course the switch cams can also be used for controlling internal functions.

Example 1

Glueing of furniture panels by means of a glue nozzle controlled via a static

cam signal (no compen-

sation of the operating delay time of the glue valve):

[5-1] Example 1: Control via static cam signal

Because the glue valve switches on/off in a delayed manner (operating delay time), the furniture

panels are not glued from the leading edge. Correspondingly late the glue nozzle is switched off

again: Due to the switch-off delay time, glue continues to emit from the nozzle although the furni-

ture panel has already left the glue area.

Example 2

Glueing of furniture panels by means of a glue nozzle controlled via a dynamised

cam signal (no

compensation of the operating delay time of the glue valve):

[5-2] Example 2: Control via dynamised cam signal

 Constant traversing speed