KEB COMBIVERT F5-A Applications Manual page 334

Posi- and synchronous operating
● Sequential positioning with automatic continuation and definition of the profile speed by PS.25 (drill
head positioning).
●
Sequential positioning with stop between the separate positioning steps. New start pulse by external
control required for each step. Definition of the profile speed by PS.25 (positioning of a workpiece for
various processing steps).
● Example 3 is a variation of example 2. The profile speed is defined by PS.31 instead of PS.25 . PS.31
is defined via an analog input.
●
Sequential positioning with stop between the positioning steps. The length of pause is adjustable.
The new start pulse is generated automatically. Definition of the profile speed by PS.25. Utilisation of
the timer functionality and of the input / output handling of the inverter for generation of an automatic
sequence control (positioning of a workpiece for various processing steps)
If these detailed examples are not required, continue reading in chapter 7.12.4.10 positioning mode/ round
table.
Example 1: Realisation of the boring head positioning
Sequential positioning with automatically continuation and definition of the profile speed by PS.25.
Settings:
●
Let the position at which the positioning process starts have the value 0.
●
Driving to this position (whether after "power on", after error or as part of the positioning process) can
always occur at maximum speed = 1500 rpm.
●
Let the position just before the material surface have the value 95,000. The speed at that point is to be
250 rpm.
●
The penetration is completed at position 100,000. Here, the drive may again have accelerated to 500
rpm. At that speed, drilling is continued up to position 150,000.
●
The withdrawal from the material back to position 95,000 shall occur at 700 rpm.
●
Thereafter, the drill head returns to the starting position at 1500 rpm.
●
The drilling process is followed automatically.
To solve this problem, several approaches are possible. An exact description of the available parameters and
alternative settings follows later in this chapter.
Adjustments:
Bit Meaning
Posi / synchro-
0..2
nous mode
Positioning /
4
target speed
Page 7.12 - 42 COMBIVERT F5-A, -E, -H
PS.00: Posi / synchronous mode
Value Explanation
5: Posi mode Activation of the positioning mode
The maximum profile speed is set via PS.25 "Index / speed".
0: PS.25 /
The speed to pass the target is determined by PS.25 of the
PS.25
following block.
© KEB, 2012-10