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3.3 Reference Handling
Local Reference
The local reference is active when the drive is operated with ‘Hand On’ bottom active. Adjust the reference by up/down and left/right arrows respectively.
Remote Reference
The reference handling system for calculating the Remote reference is shown in the figure below.
The Remote Reference is calculated once every scan interval and initially consists of two types of reference inputs:
1.
X (the external reference): A sum (see par. 3-04
Reference Function
) of up to four externally selected references, comprising any combination
(determined by the setting of par. 3-15
Reference Resource 1
, par. 3-16
Reference Resource 2
and par. 3-17
Reference Resource 3
) of a fixed
preset reference (par. 3-10
Preset Reference
), variable analog references, variable digital pulse references, and various serial bus references in
whatever unit the adjustable frequency drive is controlled ([Hz], [RPM], [Nm], etc.).
2.
Y- (the relative reference): A sum of one fixed preset reference (par. 3-14
Preset Relative Reference
) and one variable analog reference
(par. 3-18
Relative Scaling Reference Resource
) in [%].
3 Introduction to AutomationDrive FC 300
FC 300 Design Guide
3-10
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