Danfoss VLT Series Programming Manual page 74

Servo Drive Operation
Attribute
2 2
input
Table 2.43 Attributes for stopCounter
The counter values can be read from the object 0x3860
(see chapter 7.14.17 Parameter: Digital Input Counters
(0x3860)). The values are read/write for manually modifying
the counters.
Action: Set Follow Segment
Instructs the servo drive to change the used succeeding
segment of a node. It is only possible to select a segment
ID that has this node ID defined as preceding node. This
change is preserved over the guide value cycles, so no
automatic switching back takes place.
<setFollowSegment
Attribute
nodeID
segID
Table 2.44 Attributes for setFollowSegment
Exit conditions
The following exit conditions are used to monitor several
variables. The axis proceeds with the next segment as soon
as the condition is met. Exit conditions can only be defined
for EventSegments.
72
VLT
Mandatory/
optional Value range/
(+default allowed values
value)
M 1/2
nodeID="1" segID="2"/>
Mandatory/
optional Value range/
(+default allowed values
value)
M An existing
node ID.
M An existing
segment ID.
Danfoss A/S © 01/2017 All rights reserved.
®
Integrated Servo Drive ISD
An exit condition is described with a surrounding element
to define an exitID which is used for referencing inside the
Description
CAM profile. This exitID must be unique across all defined
exit conditions. Inside this exit element, there can be 1 or
more subelements. Available exit conditions are listed in the
Selects if the
following sub-chapters.
st nd
1 or the 2
digital input
<exit exitID="0">
counter is
... specific exit condition(s) with corresponding attributes
affected.
<exit>
Exit: Rectangle Mark Detection
This exit condition is used to start the search for a
rectangle mark, using the sensor interface. This exit
condition is used for alignment, depending on a sensor
signal. When using this exit condition, the axis waits for a
rectangle input on the sensor interface with a length
between the specified minimum and maximum.
When using an analog sensor, a threshold for the height of
the impulse must be defined. Positive and negative
impulses can be processed. This equates to light and dark
marks with optical sensors. The axis proceeds with the next
segment as soon as the impulse is found or the maximum
duration of the segment is reached.
If the mark has been found and the following segment is a
braking segment (TimePoly which leads to a standstill), the
servo drive always stops at the same distance to the mark.
Description
The mode ID
to get another
following
segment.
When using a
non-existing
nodeID, a
notification
from the axis is
sent.
The segment
Illustration 2.113 Behavior when Mark was Found
ID that will be
processed after
the specified
node. When The time at which the mark is found depends on the
using a non- position of the mark. The black line shows an example for
existing segID, the case that the mark is found right at the point in time
a notification
that is marked with the black arrow.
from the axis is
The duration of the segment determines the latest point in
sent.
time when the search is aborted. If the mark is found
before this duration is over, the axis proceeds with the
following segment immediately after the mark is found.
Proceeding to the next segment always takes place in
relation to the middle of the impulse. To make this
possible, the point in time for proceeding depends on the
parameterized maximal length of the mark.
<rectMark input="1" mode="analogue" threshold="50"
minLength="300" maxLength="400"/>
®
510 System
Accelerating Decelerating
phase phase
Decelerating
phase
Time
Guide value
MG36D102