7.4
Position trimming and position offset
The position offset is transferred to the drive axis via a profile generator. The offset is specified
via the following parameters:
•
•
Control word 4 of the fieldbus data interface.
Bit 23 of the Control signals parameter is used for switch-over between the sources.
0x5040:010 Bit 23
0x5040:010
0x5040:110
Technology application
Bit 2: Operation enabled
Bit 21: Synchronism
and correction busy
Bit 3: Enable operation
Bit 21: Trimming negative
Bit 20: Trimming positive
Status word
Control word
Fig. 46: Trimming
t
V
v
max.
Position offset trim
0x5042:027
Velocity offset trim
0x5042:028
Trim position
0x5041:024
0x5041:025
0x5041:026
0x5041:027
0x5041:028
Trimming position difference
Trimming velocity
Trimming acceleration
Trimming deceleration
Trimming jerk
Trimming
Fig. 47: Trim partial signal flow
Position trimming is only possible when the clutch is engaged.
•
Control word bit 20 = TRUE activates a positive direction of rotation. 0x5040:010
•
Control word bit 21 = TRUE activates a negative direction of rotation. 0x5040:010
The following parameters set the acceleration, maximum velocity and deceleration for posi-
tioning:
Trimming - position difference
Trimming - velocity
Trimming - velocity offset
The Trimming position offset parameter identifies the trimming as a proportion of the total
offset.
Configuring the "Sync and Correction" TA
Position trimming and position offset
116
Summary of Contents for i950 Series
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