Stepper Motor Open-Loop Control. No Feedback Device; Stepper Motor Open-Loop Control. Incremental Encoder On Load - Technosoft IDM240-5EI Technical Reference

Load _
where:
Analogue_Input_Range – is the range of the drive analogue input for feedback, expressed in [V].
You can read this value in the "Drive Info" dialogue, which can be opened from the "Drive Setup"
Tacho_gain – is the tachometer gain expressed in [V/rad/s]

6.2.4. Stepper motor open-loop control. No feedback device

The internal speed units are motor µsteps / (slow loop sampling period). The correspondence with
the load speed in SI units is:
Load _ Speed
where:
No_steps – is the number of motor steps per revolution
No_µsteps – is the number of microsteps per step. You can read/change this value in the
"Drive Setup" dialogue from EasySetUp.
Tr – transmission ratio between the motor displacement in SI units and load displacement
in SI units
T – is the slow loop sampling period expressed in [s]. You can read this value in the
"Advanced" dialogue, which can be opened from the "Drive Setup"

6.2.5. Stepper motor open-loop control. Incremental encoder on load

The internal speed units are load encoder counts / (slow loop sampling period). The transmission
is rotary-to-rotary. The correspondence with the load speed in SI units is:
Load _ Speed
where:
No_encoder_lines – is the rotary encoder number of lines per revolution
Tr – transmission ratio between the motor displacement in [rad] and load displacement in
[rad] or [m]
T – is the slow loop sampling period expressed in [s]. You can read this value in the
"Advanced" dialogue, which can be opened from the "Drive Setup".
© Technosoft 2011
Ana log ue
=
Speed [ SI ]
×
Tacho
4096
=
[ SI ]
μ ×
No _ steps
=
[ rad / ] s
×
No _
4
_ Input _ Range
×
Motor
×
_ gain Tr
× π
2
×
Motor
× ×
No _ steps Tr T
× π
2
×
Load
×
encoder _ lines T
80
_ Speed [ IU ]
_ Speed [ IU ]
_ Speed [ IU ]
IDMx40 Technical Reference