Technosoft IPS110, Technical Reference

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Technosoft 2007 66 IPS110 Technical Reference
] IU [ Position _ Motor
steps _ No steps _ No
] SI [ Position _ Motor
×
× μ
π ×
=
2
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.
6.11.3. 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.
6.11.4. 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:
] IU [ Position _ Motor
lines _ encoder _ No
] SI [ Position _ Motor
×
×
π ×
=
4
2
where:
No_encoder_lines – is the motor encoder number of lines per revolution
6.12. Motor speed units
6.12.1. DC brushed motor with quadrature encoder on motor
For linear motors: ] IU [ Speed _ Motor
T
accuracy _ Encoder
] SI [ Speed _ Motor
× =
where:
No_encoder_lines – is the rotary encoder number of lines per revolution
Encoder_accuracy – is the linear encoder accuracy i.e. distance in [m] between 2 pulses
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”