Technosoft iPOS4808 MX Series, Technical Reference

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Technosoft 2014 107 iPOS4808 MX Technical Reference
] IU [ Speed _ Motor
gain _ Tacho
Range _ Input _ ue log Ana
] SI [ Speed _ Motor



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]
6.12.5. Step motor open-loop control. No feedback device or incremental
encoder on load
The internal motor speed units are motor µsteps / (slow loop sampling period). The
correspondence with the motor
speed in SI units is:
] IU [ Speed _ Motor
T steps _ No steps _ No
] SI [ Speed _ Motor

  
 

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 “Driv
e
Setup” dialogue from EasySetUp.
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”
6.12.6. Step motor closed-loop control. Incremental encoder on motor
The internal motor speed units are motor encoder counts / (slow loop sampling period). The
correspondence with the load speed in SI units is:
] IU [ Speed _ Motor
T lines _ encoder _ No
] SI [ Speed _ Motor

 
 

4
2
where:
No_encoder_lines
–
is the motor encoder number of lines per revolution
T
–
is the slow loop samp
ling period expressed in [s]. You can read this value in the “Advanced”
dialogue, which can be opened from the “Drive Setup”.
6.12.7. Brushless motor with sine/cosine encoder on motor
The internal motor speed units are interpolated encoder counts / (slow loop sampling period). The
correspondence with the motor speed in SI units is:
For rotary motors:
] IU [ Speed _ Motor
T ion Interpolat periods _ Enc
] SI [ Speed _ Motor

  
 

4
2
For linear motors: