Lenze ECSCPxxx - Manual (Page 194)

Commissioning
Setting the positioning profile
Touch probe positioning
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194 EDBCSXP064 EN 8.0
6.17.2.3 Relative positioning with absolute reference
C3095/x = 3
ƒ The drive carries out a relative "point−to−point" positioning in the absolute
measuring system.
Application: Feed by a given distance in case of axes with limited traversing range
ƒ The target position defined via the profile parameters corresponds to the distance to
be travelled (as in the continuous measuring system). Thus, the drive travels exactly
by the defined distance (target position) from the current position on, but the path
integrators are not reset before.
The absolute target position to be approached results from the last absolute target
position plus the distance defined as profile parameters (target position).
Preconditions
ƒ The drive must be referenced (status bit Stat1.HomePosAvailable = 1).
6.17.3 Touch probe positioning
Touch probe positioning is used if the exact target position to be approached is not known
yet but can only be determined by a mark signal of the machine or the product.
Process of TP positioning:
ƒ TP positioning always consists of two successive positioning profiles.
Only the profile numbers 1 ... 14 may be used as the first TP profile so that a sequence
profile is still available!
ƒ In the first TP positioning, it is first travelled to a provisional target position. During
this motion, the TP input (X6/DI3) is active.
Only after the touch probe sensor responds during operation, the final target position
is calculated in the sequence profile (profile number +1) and approached without stop.
ƒ The final target position is calculated from the TP position plus the target position of
the sequence profile which is evaluated as relative distance (residual path). The sign
of the residual path determines the traversing direction.
Example: With a negative traversing direction in the first TP profile and a positive
residual path, the drive would reverse. The positioning profile mode (C3095/x) of the
sequence profile is ignored.
ƒ Different TP positioning types can be set under the profile mode C3095/x. They
differ in the first positioning type and the edge of the TP signal is set.
6.17.3.1 Absolute TP positioning
C3095/x = 10 or 20
ƒ The first TP positioning to the provisional target position is executed the same way
as is the case with absolute positioning. The same conditions apply (
¶ 193).
ƒ Edge selection of TP input:
– C3095/x = 10: positive edge at TP input X6/DI3
– C3095/x = 20: negative edge at TP input X6/DI3