Manual R06-2016 129 / 172
ROTARY INDEXING TABLE CONTROLLER
EF2...B
EXTENDED OPTIONS | 9.1 HW limit switch
9 EXTENDED OPTIONS
9.1 HW limit switch
The function HW limit switch serves to limit the movement range in which the rotary indexing table can be cycled.
This function can be enabled by the configuration wizard.
Additionally, two sensors (low active) have to be connected to the controller as HW limit switches.
Furthermore, a cam switch needs to be mounted on the rotary indexing table or the mounting plate that supplies a
high signal at both inputs of the HW limit switch for the entire desired movement range. Make sure that the cam
switch reaches slightly into the blocked areas in both directions, because the rotary disc needs to carry out a rotating
movement for a shut-off.
Furthermore, it is necessary for the "Measuring cycle quick stop" function that the rotary indexing table can move
slightly into the blocked area without a shut-off by an HW limit switch taking place.
Example: Rotary indexing table with indexing 4 in oscillating mode +/- 90°, cam switch through milled-out long holes
in the mounting plate
If the rotary indexing table is moved beyond the permissible movement range, this will be detected by a LOW signal
of the corresponding HW limit switch. An error message that needs to be acknowledged is displayed.
A further table movement is not possible in this status.
After acknowledging the error message, a warning is displayed.
The rotary indexing table can now be moved into the opposite direction of the approached HW limit switch.
As soon as the rotary indexing table is back within the movement range, the warning can be acknowledged as well.
a Desired movement range
b Signal position cams c HW limit switch CCW
d HW limit switch CW e Cam switch
a
b
c
d
e
e
b
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