Design Guide | VLT® AutomationDrive FC 360
Figure 38: Remote Reference
The remote reference is calculated once in every scan interval and initially consists of 2 types of reference inputs:
1. X (the external reference): A sum (see parameter 3-04 Reference Function) of up to 4 externally selected references, comprising any
combination (determined by the setting in parameter 3-15 Reference 1 Source, parameter 3-16 Reference 2 Source, and parameter
3-17 Reference 3 Source) of a fixed preset reference (parameter 3-10 Preset Reference), variable analog references, variable digital
pulse references, and various fieldbus references in any unit the drive is monitoring ([Hz], [RPM], [Nm], and so on).
2. Y (the relative reference): A sum of 1 fixed preset reference (parameter 3-14 Preset Relative Reference) and 1 variable analog
reference (parameter 3-18 Relative Scaling Reference Resource) in [%].
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