Parker EME
Setting up Compax3
192-120113 N08 C3I12T11 - December 2010
127
Limit switches functioning as direction reversal switches during homing run, will not
trigger a limit switch error.
The error can be acknowledged with activated limit switch.
The drive can then be moved out of the end switch range with a normal positioning.
The direction of the movement is verified in the event of fixed I/O assignment.
Only the direction towards the travel range is allowed.
Debouncing: Limit switch, machine zero and input 0
A majority gate is used for debouncing.
The signal is sampled every 0.5ms
The debounce time determines the number of scans the majority gate will perform.
If the level of more than half of the signals was changed, the internal status will
change.
The debounce time can be set in the configuration wizard within the range of 0 ...
20ms.
The value 0 deactivates the debouncing.
If the debouncing time is stated, the input I0 can be debounced as well (checkbox
below).
4.1.7.4
Change assignment direction reversal / limit switches
If this function is not activated, the direction reversal / end switches are assigned
as follows:
Direction reversal / limit switch on I5 (X12/12): negative side of the travel range
Direction reversal /limit switch on I6 (X12/13): positive side of the travel range
If this function is activated, the direction reversal / limit switches are assigned as
follows:
Direction reversal / limit switch on
I5
(X12/12):
positive side
of the travel range
Direction reversal / limit switch on
I6
(X12/13):
negative side
of the travel range
4.1.7.5
Change initiator logic
The initiator logic of the limit switches (this does also apply for the direction
reversal switches) and the machine zero initiator can be changed separately.
Limit switch E5 low active
Limit switch E6 low active
Home switch E7 low active
In the basic settings the inversion is deactivated, so that the signals are “high
active”.
With this setting the inputs I5 to I7 can even be switched within their logic, if they
are not used as direction reversal/limit switches or machine zero.
Limit switch /
direction reversal
switch
Behavior in the case
of an active limit
switch
Change assignment
of direction reversal
/ limit switch is
activated
