Danfoss VLT AutomationDrive FC 361 Series Design Manual page 63

Basic Operating Principles ...
LCP keys Parameter 3-13 Reference
Site
[Hand On] Linked to hand/auto
[Hand On]⇒(Off) Linked to hand/auto
[Auto On] Linked to hand/auto
[Auto On]⇒(Off) Linked to hand/auto
All keys Local
All keys Remote
Table 8.1 Local and Remote Reference Configurations
8.2.2 Remote Handling of References
Remote handling of reference applies to both open-loop
and closed-loop operation. See Illustration 8.3.
Up to 8 internal preset references can be programmed into
the drive. The active internal preset reference can be
selected externally through digital control inputs or
through the serial communications bus.
External references can also be supplied to the drive, most
commonly through an analog control input. All reference
MG06K102
Design Guide
sources and the bus reference are added to produce the
Active
total external reference.
Reference
Local
Local The active reference can be selected from the following:
•
Remote
•
Remote
Local
•
Remote
•
The active reference can be scaled. The scaled reference is
calculated as follows:
Reference = X + X ×
Where X is the external reference, the preset reference, or
the sum of these references, and Y is parameter 3-14 Preset
Relative Reference in [%].
If Y, parameter 3-14 Preset Relative Reference, is set to 0%,
the scaling does not affect the reference.
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External reference.
Preset reference.
Setpoint.
Sum of the external reference, preset reference,
and setpoint.
Y
100
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