Danfoss EtherNet/IP Midi Drive FC 280 Programming Manual page 22

Control
The actual reference [Ref. %] in the frequency converter
depends on the settings in the following parameters:
•
Parameter 1-23 Motor Frequency
•
Parameter 1-25 Motor Nominal Speed
•
Parameter 3-02 Minimum Reference
•
Parameter 3-03 Maximum Reference
All references provided to the frequency converter are
4 4
added to the total reference value. When the fieldbus
controls a reference only, ensure that all other reference
inputs are 0.
Digital and analog input terminals cannot be used for
reference signals. The default setting (0%) can be
maintained for preset references in parameter 3-10 Preset
Reference.
NOTICE
If the bus speed reference is negative, and the control
word contains a run reverse signal, the frequency
converter runs clockwise (- to - is +).
MAV is scaled in the same way as the reference.
4.5.2 Bus Speed Reference Value under
Instances 20/70 and 21/71
Illustration 4.7 Bus Speed Reference Value under Instances
20/70 and 21/71
The speed reference value is transmitted to the frequency
converter in the form of a 16-bit word. The value is
transmitted directly in RPM.
20
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