JVL MIS17 Series, User Manual

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294 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
11.5 Objects used in the DSP-402 standard
Velocity encoder factor
This factor is used to convert the user unit into the internal unit (RPM).
The factor is adjusted with the object 6094h.
Example 1:
An MIS232 has1600 counts/revolution.
We want the user unit of velocity to be in RPM. This is the same as the internal unit.
The parameters should be set as follows:
Example 2:
We have an MIS232 that uses RPM as the internal velocity and the same belt drive as in
the above Position factor example.
We want the user unit of velocity to be in mm/s.
The parameters should be set as follows:
Acceleration factor
This factor is used to convert the user unit into the internal unit (9.54 RPM/s).
The factor is adjusted with the object 6097h.
Example 1:
We have an MIS232 with 1600 counts/revolution.
We want the user unit of acceleration to be in RPM/s.
The parameters should be set as follows:
Object Name Value
6094
h
subindex 1
Velocity encoder factor - Numerator 1600
6094
h
subindex 2
Velocity encoder factor – Divisor 1600
Object Name Calculated value Value
6094
h
subindex 1
Velocity encoder factor - Numerator
(60*3.5) / 389.56
= 0.53907
53907
6094
h
subindex 2
Velocity encoder factor – Divisor 1 100000
Object Name Value
6097
h
subindex 1
Acceleration encoder factor - Numerator 100
6097
h
subindex 2
Acceleration encoder factor – Divisor 954