Technosoft IBL2403 Series, Technical Reference

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Technosoft 2007 74 IBL2403 Technical Reference
T – is the slave slow loop sampling period, expressed in [s]. You can read this value in the
“Advanced” dialogue, which can be opened from the “Drive Setup”.
6.12. Motor position units
6.12.1. Brushless / DC brushed motor with quadrature encoder on motor
The internal motor position units are encoder counts. The correspondence with the motor
position in SI units
31
is:
] IU [ Position _ Motor
lines _ encoder _ No
] SI [ Position _ Motor
×
×
π ×
=
4
2
where:
No_encoder_lines – is the rotary encoder number of lines per revolution
6.12.2. Brushless motor with linear Hall signals
The internal motor position units are counts. The motor is rotary. The resolution i.e. number of
counts per revolution is programmable as a power of 2 between 512 and 8192. By default it is set
at 2048 counts per turn. The correspondence with the motor position in SI units is:
For rotary motors: ] IU [ Position _ Motor
resolution
] SI [ Position _ Motor
×
π ×
=
2
For linear motors:
Pole_Pitch
Motor_Position[SI] = ×Motor_Position[IU]
resolution
where:
resolution – is the motor position resolution
Pole_Pitch – is the magnetic pole pitch NN (distance expressed in [m])
6.12.3. DC brushed motor with quadrature encoder on load and tacho on motor
The motor position is not computed.
6.12.4. Stepper motor open-loop control. No feedback device
The internal motor position units are motor µsteps. The correspondence with the motor
position
in SI units
1
I
s:
] IU [ Position _ Motor
steps _ No steps _ No
] SI [ Position _ Motor
×
× μ
π ×
=
2
31
SI units for motor position are: [rad] for a rotary motor, [m] for a linear motor