USER MANUAL
POSITION CONTROLLER THESI 310
MT02_A37_A_TH310_GIVI_ENG rev. E
Pag. 26/44
Note:
for a proper use of ramps, it is necessary to correctly set the following parameters:
P11 = speed change value.
This has to be adequately set to allow the complete execution of deceleration ramp,
based on the time set.
If the space set to change speed is too short, the deceleration ramp is interrupted
and positioning occurs abruptly. If it is too long, positioning occurs smoothly, but
much more slowly.
P19 = “speed change without stopping” option.
This has to be set on “Yes”, to allow the gradual switching from high speed to low
speed, following the deceleration ramp.
P26 = acceleration time.
This determines the time necessary for the axis to pass from 0 speed to high speed.
P27 = deceleration time.
This determines the time necessary for the axis to pass from high speed to low
speed. This has to be adequately set to allow the complete execution of the
deceleration ramp, based on the space set to change speed.
The acceleration and deceleration ramps (see parameters 26 and 27) are depicted in the
figure below:
Note:
setting at 0 the value of the time of parameter 27, it is possible to operate with a
deceleration based only on the space available for changing speed.
t.acc
t.dec
V
mm
slow
fast
ok pos
speed change
