Table of Contents
Advertisement
6.12.3. Stepper motor open-loop control. No feedback device
The internal motor position units are motor µsteps. The correspondence with the motor position
45
is:
in SI units
Motor
_
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.
6.12.4. Stepper motor open-loop control. Incremental encoder on load
In open-loop control configurations with incremental encoder on load, the motor position is not
computed.
6.12.5. Stepper motor closed-loop control. Incremental encoder on motor
The internal motor position units are motor encoder counts. The correspondence with the motor
position in SI units is:
Motor
where:
No_encoder_lines – is the motor encoder number of lines per revolution
6.13. Motor speed units
6.13.1. Brushless / DC brushed motor with quadrature encoder on motor
The internal motor speed units are encoder counts / (slow loop sampling period). The
correspondence with the motor speed in SI units
For rotary motors:
45
SI units for motor position are [rad] for a rotary motor, [m] for a linear motor
46
SI units for motor speed are [rad/s] for a rotary motor, [m/s] for a linear motor
© Technosoft 2011
=
Position
[
SI
]
μ
No
_
steps
=
_
Position
[
SI
]
×
No
4
=
Motor
_
Speed
[
SI
]
×
π
2
×
Motor
×
No
_
steps
×
π
2
×
Motor
_
encoder
_
lines
46
is:
×
π
2
×
No
_
encoder
_
lines
4
89
_
Position
[
IU
]
_
Position
[
IU
]
×
Motor
_
Speed
[
IU
×
T
IDMx40 Technical Reference
]
Advertisement
Table of Contents
