8-8 Functions ECODRIVE03-FL*-04VRS
DOK-ECODR3-FL*-04VRS**-FK01-EN-P
Initial Startup with "Evaluation of Reference Mark/Home-switch Signal
Edge"
If the encoder does not have distance-coded reference marks (types 1 to
3), then in C009, Homing configuration select whether
• the home switch should be evaluated and/or
• the reference marks should be evaluated.
The following must also be stipulated:
• the direction in which the drive is to move when the "Homing"
command is started.
⇒ Verify the corresponding position encoder type parameters
(C002/C005) for the correct settings
⇒ setting the following parameter to 0
• C011, reference distance
⇒ Set parameter C009, Homing configuration to low values
(e.g., velocity = 1% , acceleration = 10 %)
⇒ Execute the homing function
The command should have been completed without error. The machine
zero point is at the position of the home switch or the reference point,
since the reference distance for the position feedback value was set to "0"
in parameter C011. The actual position value should now be absolute as
referenced to this preliminary machine zero point. To set the correct
machine zero point, the following steps can now be taken:
⇒ Move the axis to the desired machine zero point and enter the position
feedback value indicated there in C011, Reference distance with the
inverse operational sign.
or:
⇒ Move the axis to position feedback value = 0 and measure the distance
between the current position and the desired machine zero point.
Enter this distance in C011, Reference distance.
After re-executing the drive-controlled homing command, the position
feedback value should be referenced to the desired machine zero point.
Homing velocity and Homing acceleration in Parameter C009 can now
be set to their final values.
Evaluation of the Home Switch
If there is no clear-cut match with the reference marks of the measuring
system to be homed, the home switch can be used to identify a specific
mark.
If reference mark evaluation was selected in parameter C009, the
reference mark evaluated is the one that comes right after the leading
edge of the home switch signal in the homing direction.
Note: The home switch input is mapped as input I4.00.6.
Result of Homing
Home Switch Evaluation
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