Lenze E94A - Manual (Page 141)

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
 Constant traversing speed