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

Load
where:
No_encoder_lines – is the encoder number of lines per revolution
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"

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

The internal jerk units are motor µsteps / (slow loop sampling period)
the load jerk in SI units
Load _
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"

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

The internal jerk units are load encoder counts / (slow loop sampling period)
rotary-to-rotary. The correspondence with the load jerk in SI units is:
Load
where:
No_encoder_lines – is the rotary encoder number of lines per revolution
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".
43
SI units for jerk are [rad/s
© Technosoft 2011
=
_ Jerk [ SI ]
×
No _ encoder
4
43
is:
=
Jerk [ SI ]
μ
No _ steps
=
_ Jerk [ SI ]
×
No _ encoder
4
3
] for a rotary movement, [m/s
× π
2
×
Load
3
×
_ lines T
× π
2
×
3
× × ×
No _ steps Tr T
× π
2
×
Load
3
×
_ lines T
3
] for a linear movement
85
_ Jerk [ IU ]
3
. The correspondence with
Motor _ Jerk [ IU ]
3
. The transmission is
_ Jerk [ IU ]
IDMx40 Technical Reference