Technosoft iPOS4808 MX Series, Technical Reference

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Technosoft 2014 23 iPOS4808 MX Technical Reference
10. Speed or torque control of a DC brushed rotary motor with a tachometer on its shaft.
Scaling factors take into account the transmission ratio between motor and load (rotary or
linear). Therefore, the motion commands (for speed and acceleration) expressed in SI
units (or derivatives) refer to the load
1
, while the same commands, expressed in IU units,
refer to the motor.
Figure 2.10. DC brushed rotary motor. Speed/torque control.
Tachometer on motor.
11. Open-loop control of a 2 or 3-phase step motor in position or speed. Scaling factors take
into account the transmission ratio between motor and load (rotary or linear). Therefore,
the motion commands (for position, speed and acceleration) expressed in SI units (or
derivatives) refer to the load, while the same commands, expressed in IU units, refer to
the motor.
Figure 2.11. No position or speed feedback.
Open-loop control: motor position or speed
.
12. Closed-loop control of load position using an encoder on load , combined with open-
loop control of a 2 or 3-phase step motor in speed, with speed reference provided by the
position controller. The motion commands in both SI and IU units refer to the load.
1
Motion commands can be referred to the motor by setting in EasySetUp a rotary to rotary transmission with ratio 1:1