Reference Limits; Scaling Of Preset References And Bus References - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide

3.2.9. Reference Limits

Reference Range
Par. 3-00 , 3-02
sum of all references are clamped when necessary. The relation between the resulting reference (after clamping) and the sum of all references is shown
below.
Minimum Reference
The value of par. 3-02
unless the par. 1-00 Configuration Mode
the following relations between the resulting reference (after clamping)
and the sum of all references is as shown to the right.

3.2.10. Scaling of Preset References and Bus References

Preset references are scaled according to the following rules:
• When par. 3-00 Reference Range
equals the Max (abs (par. 3-03
Reference Range
• When par. 3-00
equals Max Reference.
Bus references are scaled according to the following rules:
• When par. 3-00 Reference Range
Min Reference and 100% reference equals Max reference.
Reference Range
• When par. 3-00
Minimum Reference Maximum Reference
and 3-03
can not be set to less than 0,
is set to [3] Process. In that case
: [0] Min - Max 0% reference equals 0 [unit] where unit can be any unit e.g. rpm, m/s, bar etc. 100% reference
Maximum Reference ), abs (par. 3-02
: [1] -Max - +Max 0% reference equals 0 [unit] -100% reference equals -Max Reference 100% reference
: [0] Min - Max. To obtain max resolution on the bus reference the scaling on the bus is: 0% reference equals
: [1] -Max - +Max -100% reference equals -Max Reference 100% reference equals Max Reference.
MG.33.BA.02 - VLT ® is a registered Danfoss trademark
together define the allowed range of the sum of all references. The
Minimum Reference )).
3. Introduction to FC 300
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