Feedback And Reference Handling - Danfoss VLT DriveMotor FCP 106 Design Manual

Product Overview

2.5 Feedback and Reference Handling

2.5.1 Reference Handling
Details for open-loop and closed-loop operation.
Internal resource
P 3-14 Preset relative
reference
±100%
Input command:
Preset reference 0 ±100% preset ref bit0, bit1, bit2
Preset reference 1 ±100%
Preset reference 2 ±100%
Preset reference 3 ±100%
Preset reference 4 ±100%
Preset reference 5 ±100%
Preset reference 6 ±100%
Preset reference 7 ±100%
P 3-15 Reference 1
resource
Parameter choice:
No function
Reference resource 1,2,3
Analog reference
±200%
Pulse reference
±200%
Local bus reference
±200%
+
P 3-16 Reference 2
resource
No function
Analog reference
±200%
Pulse reference
±200%
Local bus reference
±200%
P 3-17 Reference 3
resource
No function
Analog reference
±200%
Pulse reference
±200%
Local bus reference
±200%
Illustration 2.16 Block Diagram Showing Remote Reference
The remote reference comprises:
•
Preset references.
•
External references (analog inputs and serial
communication bus references).
•
The preset relative reference.
•
Feedback-controlled setpoint.
MG03M202
Design Guide
Relative scaling reference
P 3-10 Preset
reference
±100%
Y
Relative
reference
=
X
X+X*Y/100
+
±200%
±200%
Input commands:
Speed up/speed down
P 16-50 External reference in %
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P 4 - 12 Motor
Speed low
limit (Hz)
P 4 - 14 Motor
Speed high
limit (Hz)
Input command:
freeze reference
maxRefPCT
±200%
minRefPct
min -max
ref ref
±100%
Freeze
reference &
increase/
decrease
reference
P 16-02 Remote
Reference in %
Speed open
P 1-00
loop
Con guration
mode
or rpm
Scale to
Hz
Remote
reference/
setpoint
Process
control
Scale to
process
unit
±200%
Feedback
handling
P 16-01
Reference
[Unit]
P 20 - 12
Reference
/Feedback
unit
19
2 2