Lenze E94A - Manual (Page 143)

Lenze · 9400 function library · Reference manual · DMS 6.7 EN · 08/2014 · TD05
143
5 Function blocks
5.2 L_CamContactor - cam group with switch-on and switch-off dynamisation
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5.2.3 Switching performance for position cams
Position cams in positive effective direction
If the input position dnPosIn_p reaches the cam switch-on position in positive effective direction,
the output bOut is set to TRUE and is reset to FALSE if the switch-off position is exceeded.
• If a change in direction is effected after the switch-on position has been reached, the output
bOut is reset to FALSE immediately.
[5-3] Example: Position cams in positive effective direction
Position cams in negative effective direction
If the input position dnPosIn_p reaches the cam switch-on position in negative effective direction,
the output bOut is set to TRUE and is reset to FALSE if the switch-off position is exceeded.
• If a change in direction is effected after the switch-on position has been reached, the output
bOut is reset to FALSE immediately.
[5-4] Example: Position cams in negative effective direction
Position cams with bipolar effective direction
If the input position dnPosIn_p is positioned within the cam switch-on and switch-off position, the
output bOut is set to TRUE, irrespective of the process flow direction.
V
t
t
dnPosIn_p
bOut
t
off
on
0
V
t
t
dnPosIn_p
bOut
t
on
off
0