Technosoft IBL2403-CAN - DC Brushed Motor with Quadrature Encoder on Load and Tacho on Motor; DC Brushed Motor with Tacho on Motor; Stepper Motor Open-Loop Control. no Feedback Device

© Technosoft 2007 65 IBL2403 Technical Reference
where:
resolution – is the motor position resolution
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”
Pole_Pitch – is the magnetic pole pitch NN (distance expressed in [m])
6.2.3. DC brushed motor with quadrature encoder on load and tacho on motor
The internal speed units are encoder counts / (slow loop sampling period). The motor is rotary
and the transmission is rotary-to-rotary. The correspondence with the load speed in SI units is:
]IU[Speed_Load
Tlines_encoder_No
]SI[Speed_Load ×
××
π×
=
4
2
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”
6.2.4. DC brushed motor with tacho on motor
When only a tachometer is mounted on the motor shaft, the internal speed units are A/D
converter bits. The correspondence with the load
speed in SI units
26
is:
]IU[Speed_Motor
Trgain_Tacho
Range_Input_uelogAna
]SI[Speed_Load ×
××
=
4096
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]
6.2.5. 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:
]IU[Speed_Motor
TTrsteps_Nosteps_No
]SI[Speed_Load ×
×××μ
π×
=
2
26
SI units for speed are [rad/s] for a rotary movement, [m/s] for a linear movement