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CHAPTER 7 – Programmation
SMT-BD2/m
4 - EDITION OF A SEQUENCE
Parameters of a sequence:
Type
Defines the motion type.
ABSOLUTE: absolute positioning.
RELATIVE: relative positioning.
HOME: axis homing.
SPEED: speed profile.
TORQUE: torque control.
Position
Position to be reached in absolute or relative positioning mode.
For a HOME sequence, this parameter indicates the value to be loaded in the position
counter when the home position is found.
Speed
Defines the motion speed in rpm.
Torque
For a TORQUE sequence, this parameter defines the torque set point in % of the
Maximum current
parameter value.
Acceleration
Defines the acceleration time in ms with regard to the
Maximum speed
parameter value.
When the motion speed is lower than the maximum speed, the acceleration time is
proportionally reduced.
For a SPEED or TORQUE sequence, this parameter defines the acceleration time in ms
from the initial speed at the sequence starting up to the speed set point.
Deceleration
Defines the deceleration time in ms with regard to the
Maximum speed
parameter
value. When the motion speed is lower than the maximum speed, the deceleration time
is proportionally reduced. This parameter can be equal to 0 if a sequences linkage can
be made without stopping the motor.
For a SPEED sequence, this parameter defines the deceleration time in ms from the
sequence speed set point up to 0. This parameter can be equal to 0 if a sequences
linkage can be made without stopping the motor.
Delay Time / TimeOut
Defines the delay time in ms at the end of the positioning.
For a SPEED sequence, this parameter defines the motor running time in ms at the
speed set point value. If this parameter value exceeds 16000 ms, then a sequence stop
condition can be used to leave the speed control sequence.
For a TORQUE sequence, this parameter defines the torque holding time in ms when the
torque set point value has been reached. If this parameter value exceeds 16000 ms,
then a sequence stop condition can be used to leave the torque control sequence.
For a HOME sequence, this parameter defines the time-out in seconds. The time-out is
the time after which the positioner releases a Busy error if it does not find the home
position. When this value is 0, the time-out protection is not activated.
Next sequence
Defines the number of the sequence to be executed after the current one.
Counter
Defines how many times the sequence must be executed. This counter is decremented
each time a sequence is over.
Counter link / Jump
Defines the number of the sequence to be executed when the counter is not at 0.
Logic outputs
Defines the possible effect on the outputs.
Triggering
Defines the outputs triggering moment.
Triggering position
Defines the outputs triggering position.
Start condition
Defines the possible effect of the logic inputs.
Stop
selection allows to use the logic
inputs as a sequence stop condition. A sequence stop condition is only valid for a
SPEED or TORQUE sequence when the running time or the holding time value is higher
than 1600 ms. When
Stop
is desactivated, the logic inputs are used as a sequence start
condition for any sequence type.
Home control
For a HOME sequence, this parameter defines the amplifier configuration for the homing
sequence
execution.