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Danfoss VLT FC 300 Design Guide

Danfoss VLT FC 300
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Case 2: Positive Reference with Dead band, Digital input to trigger reverse. Clamping rules.
This Case shows how Reference input with limits outside -Max +Max limits clamps to the inputs low and high limits
before addition to External reference. And how the External reference is clamped to -Max +Max by the Reference
algorithm.
+
750
1
10
500
1
10
130BA188.13
-500
V
V
Analog input 53
Low reference 0 RPM
High reference 500 RPM
Low voltage 1V
High voltage 10V
Ext. source 1
Range:
0,0% (0 RPM)
150,0% (750 RPM)
150,0% (750 RPM)
Ext. reference
Range:
0,0% (0 RPM)
750 RPM 10V
Ext. Reference
Absolute
0 RPM 1V
Reference
algorithm
Reference
100,0% (500 RPM)
0,0% (0 RPM)
Range:
Limited to:
-100%- +100%
(-500 RPM- +500 RPM)
Limited to: -200%- +200%
(-1000 RPM- +1000 RPM)
Reference is scaled
according to
max reference giving a
speed.!!!
Scale to
speed
+500 RPM
-500 RPM
Range:
Speed
setpoint
Motor
control
Range:
-200 RPM
+200 RPM
Motor
Digital input 19
Low No reversing
High Reversing
Limits Speed Setpoint
according to min max speed.!!!
Motor PID
Dead band
Digital input
General Reference
parameters:
Reference Range: -Max - Max
Minimum Reference: Don't care
Maximum Reference: 500 RPM (100,0%)
General Motor
parameters:
Motor speed direction:Both directions
Motor speed Low limit: 0 RPM
Motor speed high limit: 200 RPM
Introduction to FC 300 FC 300 Design Guide
28 MG.33.BD.02 - VLT
®
is a registered Danfoss trademark
3
3

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Danfoss VLT FC 300 Specifications

General IconGeneral
BrandDanfoss
ModelVLT FC 300
CategoryDC Drives
LanguageEnglish

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