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CHAPTER 7 – Programmation
SMT-BD2/m
4.2
-
POSITIONING
SEQUENCE
A positioning sequence is defined by:
- the position to be reached (absolute or relative),
- the motion speed,
- the acceleration time,
- the deceleration time,
The parameters acceleration and deceleration times define the time with regard to the maximum speed
parameter value. When the motion speed is lower than the maximum speed, the trajectory acceleration
and deceleration times are proportionally reduced in order to maintain the same acceleration and
deceleration values.
- a delay time at the end of the motion.
Linkage example of 2 positioning sequences without stopping (the deceleration ramp of the first sequence is 0):
Remark : For a small displacement, when the programmed motion speed value cannot be reached, the trajectory
acceleration and deceleration are reduced and the profile is calculated according to the programmed
acceleration and deceleration time values.
4.3
-
SPEED
SEQUENCE
A speed sequence is defined by:
- the speed set point
- the running time
- the acceleration time
- the deceleration time.
When the running time exceeds 16000 ms, the stop condition can be used for stopping the sequence.
Note: The
Acceleration time
and
Deceleration time
parameters are the real acceleration and deceleration times
values and not acceleration and deceleration ramps with regard to the
Maximum speed
value as they are in a
positioning sequence or a homing sequence.
Sequence 1 with Tdec = 0
and Next = 2
Sequence 2
Delay time
Maximum speed
Acceleration time
Deceleration time
Motion speed
Maximum speed
Acceleration time
Deceleration time
Motion speed
Deceleration time