Danfoss VLT Series Programming Manual page 52

Servo Drive Operation
2 2
0
Change CAM imm=0
Use blend dist=1
Active
CAM
InSync
End of
pro le
Illustration 2.66 Change CAM immediately = 0.
Use blending distance; Blending distance is inside the new
CAM.
0
Change CAM imm=0
Use blend dist=1
Active
CAM
InSync
End of
pro le
Illustration 2.67 Change CAM immediately = 0.
Use blending distance; Blending distance ends after the end
point of the new CAM.
50
VLT
blend dist
Blending Master relative
Slave absolute
Master
relative
1 2
CAM 2 CAM 3
Master relative
Slave absolute
blend dist
Cyclic
Blending
Master
relative
1 2
CAM 2 CAM 3
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® ®
Integrated Servo Drive ISD
0
Guide value
cycle
Active
CAM
InSync
End of
pro le
CAM
Error
Illustration 2.68 The end of the blend distance is not on the
new CAM.
This situation leads to rejection of the transition. An error is
issued
because the 1
immediately = 1.
Guide value Jump in position and
cycle velocity possible!
0
Change CAM imm=1
Active
CAM 2
CAM
InSync
End of
pro le
Illustration 2.69 Change CAM immediately = 1.
No blending distance used. If the CAMs do not match in slave
position and velocity, a jump may occur.
This may lead to a following error.
510 System
Master relative
blend
Slave absolute
dist
Non- cyclic
Master
relative
1
Change CAM imm=0
Use blend dist=1
CAM 2
st
CAM was aborted with Change CAM
Master relative
Slave absolute
Master relative
1
Use blend dist=0
CAM 3
2
Guide value
cycle
2
Guide value
cycle
MG36D102