Danfoss VLT AutomationDrive FC 300 Series - PID Control; Speed PID Control

+
500
10
V
130BA189.12
-10
-500
-1
500
-500
-10
1
10
V
Analog input 53
Low reference 0 RPM
High reference +500 RPM
Low voltage 1V
High voltage 10V
Ext. source 1
Range:
-50,0% (-500 RPM)
+50,0% (+500 RPM)
+100,0% (+1000 RPM)
Ext. reference
Range:
-100,0% (-1000 RPM)
+500 RPM 10V
Ext. Reference
Absolute
-500 RPM -10V
Reference
algorithm
Reference
+100,0% (+1000 RPM)
-100,0% (-1000 RPM)
Range:
Limited to:
-100%- +100%
(-1000 RPM-
+1000 RPM)
Limited to:
-200%- +200%
(-2000 RPM-
+2000 RPM)
Reference is scaled
according to max
reference.!!!
Scale to
RPM
+1000 RPM
-1000 RPM
Range:
Speed
setpoint
Motor
control
Motor
Limits Speed to min max
motor speed.!!!
Motor PID
RPM
Dead band
General Reference
parameters:
Reference Range: -Max - +Max
Minimum Reference: Don't care
Maximum Reference: 1000 RPM (100,0%)
General Motor
parameters:
Motor speed direction:Both directions
Motor speed Low limit: 0 RPM
Motor speed high limit: 1500 RPM
-1V to 1V
RPM
-500 RPM -10V
Ext. Reference
+500 RPM 10V
Absolute
+50,0% (+500 RPM)
-50,0% (-500 RPM)
High reference +500 RPM
Ext. source 2
Low reference -500 RPM
Analog input 54
Range:
High voltage +10V
Low voltage -10V
No Dead
band
Illustration 3.19 Negative to Positive Reference with Dead Band, Sign Determines the Direction, -Max to +Max
3.4
PID Control
3.4.1 Speed PID Control
1-00 Configuration Mode
1-01 Motor Control Principle
U/f
VVC
plus
Flux Sensorless Flux w/ enc. feedb
[0] Speed open loop Not Active Not Active ACTIVE N.A.
[1] Speed closed loop N.A. ACTIVE N.A. ACTIVE
[2] Torque N.A. Not Active. N.A. Not Active
[3] Process Not Active Not Active ACTIVE ACTIVE
Table 3.4 Control Configurations where the Speed Control is Active
“N.A.” means that the specific mode is not available at all. “Not Active” means that the specific mode is available but the Speed Control is not
active in that mode.
NOTE
The Speed Control PID will work under the default parameter setting, but tuning the parameters is highly recommended to
optimize the motor control performance. The two Flux motor control principles are particularly dependant on proper tuning
to yield their full potential.
Introduction
VLT
®
AutomationDrive FC 300 Design Guide, 0.25-75 kW
30 MG33BE02 - VLT
®
is a registered Danfoss trademark
3
3
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-21462-Danfoss-131B8966-VLT-Automation-VT-Drive-VFD-FC301-230V-5-HP.aspx